Thermoflow takes great pride in having a large pool of satisfied clients and customers throughout the world. If you don't find yourself on this list, you should be!
The steadily growing list shown below includes customers who use our software, clients who have contracted our services, and companies who have sent employees to one of our professional development seminars.
Note that this is an archival list. Some companies have changed names, merged or been acquired to form new entities, are defunct, or are no longer customers. Some current and former customers have been removed from this list upon their request.
| A & G Energy LLC | Wimberley | USA |
| A. A. Salama Ltd. | Haifa | ISRAEL |
| A2A SpA | Milan | ITALY |
| Aalborg CSP | Aalborg | DENMARK |
| Aalborg Engineering | Aalborg | DENMARK |
| Aalborg Industries | Aalborg | DENMARK |
| Aalborg University | Aalborg OE | DENMARK |
| ABB | Buenos Aires | ARGENTINA |
| ABB AG | Mannheim | GERMANY |
| ABB Carbon AB | Finspang | SWEDEN |
| ABB Energy Services, Inc. | North Brunswick | USA |
| ABB Energy Ventures, Inc. | Princeton | USA |
| ABB Enertech Ltd. | Winterthur | SWITZERLAND |
| ABB Global Industries & Services Ltd. | Bangalore | INDIA |
| ABB Ltda. | Osasco | BRAZIL |
| ABB Lummus Global | Bloomfield | USA |
| ABB Power Automation | Baden | SWITZERLAND |
| ABB S.p.A. Process Automation Division | Sesto San Giovanni | ITALY |
| ABB Schweiz AG | Zurich | SWITZERLAND |
| ABB Zamech Ltd. | Elblag | POLAND |
| ABB Zamech Ltd. | Warsaw | POLAND |
| Abeinsa EPC | Phoenix | USA |
| Abener Energia S.A. | Seville | SPAIN |
| Abener Engineering & Construction Services LLC | Chesterfield | USA |
| Abener Ghenovia Ingenieria de Mexico S.A. de C.V. | Col. Veronica Anzures | MEXICO |
| Abener Mexico | Mexico City | MEXICO |
| Abengoa Research | Sevilla | SPAIN |
| Abengoa S.A. | Sevilla | SPAIN |
| Abengoa Solar (New Technologies Dept.) | Sevilla | SPAIN |
| Acciona Ingenieria S.A. | Alcobendas | SPAIN |
| ACE Cogeneration Facility | Trona | USA |
| Acoser | Bologna | ITALY |
| Actelios S.p.A. | Sesto San Giovanni | ITALY |
| Added Values | Vejle | DENMARK |
| Advanced Energy Solutions | Middlefield | USA |
| Advantica | Loughborough | UNITED KINGDOM |
| Advisian | Madrid | SPAIN |
| ADWEC | Abu Dhabi | UNITED ARAB EMIRATES |
| AE&E INNOVA GmbH | Nurnberg | GERMANY |
| AE&E Lentjes | Ratingen | GERMANY |
| AECOM | Newmarket | NEW ZEALAND |
| AECOM | Singapore | SINGAPORE |
| AECOM Environment | Westford | USA |
| Aegis Ltd. - Essar Engineering Services Div. | Surat | INDIA |
| AENE Ltda | Bogota D. C. | COLOMBIA |
| Aerospace Industry Development Corporation | Taichung | TAIWAN |
| AES Argentina Generacion S.A. | Buenos Aires | ARGENTINA |
| AES Corporation | Old Bridge | USA |
| AES Gener | Santiago | CHILE |
| AES Global Development | Lockport | USA |
| AES India Pvt. Ltd. | Jayadev Vihar | INDIA |
| AES Pacific | Long Beach | USA |
| AES Panama | Panama City | PANAMA |
| AESA - A. Evangelista S.A. de C.V. | Buenos Aires | ARGENTINA |
| AF-Consult Ltd. | Espoo | FINLAND |
| AF-Consult Switzerland AG | Baden | SWITZERLAND |
| Affiliated Engineers Inc. | Chapel Hill | USA |
| AG Ingenieria | Seville | SPAIN |
| AGIP S.p.A. | Milano | ITALY |
| AGL Energy | North Sydney | AUSTRALIA |
| AICIA | Sevilla | SPAIN |
| Air Industrie Thermique | Rueil-Malmaison Cedex | FRANCE |
| Air Liquide | Paris | FRANCE |
| Air Liquide | Champigny-sur-Marne | FRANCE |
| Air Liquide Iberica de Gases | Madrid | SPAIN |
| Air Liquide Large Industrial U.S. LP | Houston | USA |
| Ajou University | Su-Won | SOUTH KOREA |
| AK Enerji | Yalova | TURKEY |
| AKENERJI Elektrik Uretim A.S. | Istanbul | TURKEY |
| Aker Business Services | Stockton-on-Tees | UNITED KINGDOM |
| Aker Business Services | Houston | USA |
| AKSA Energy Generation Inc. | Istanbul | TURKEY |
| Akzo Fibers b.v. | Emmen | THE NETHERLANDS |
| Akzo Nobel Engineering b.v. | Arnhem | THE NETHERLANDS |
| Akzo Nobel Industrial Chemicals b.v. | Amersfoort | THE NETHERLANDS |
| Akzo Nobel Industrial Chemicals b.v. | Delfzijl | THE NETHERLANDS |
| Akzo Nobel Industrial Chemicals b.v. | Hengelo | THE NETHERLANDS |
| Akzo Nobel Industrial Chemicals b.v. | Rotterdam | THE NETHERLANDS |
| Alabama Electric | Andalusia | USA |
| Alabama Power | Bucks | USA |
| Alabama Power Co. | Birmingham | USA |
| Alba Power Ltd. | Netherly | UNITED KINGDOM |
| Alberta Natural Gas | Calgary | CANADA |
| Alejandro Abellan Aleman | Aviles | SPAIN |
| Alfanar Company | Riyadh | SAUDI ARABIA |
| Alfanar Energy | London | UNITED KINGDOM |
| Alghanim International | Kuwait | KUWAIT |
| Alianca Geracao de Energia S.A. | Floresta | BRAZIL |
| All Russian Thermal Engineering Institute | Moscow | RUSSIA |
| Allegheny Energy Supply | Goodyear | USA |
| Alliant Energy Applications | Cedar Rapids | USA |
| Allied Signal | Torrance | USA |
| Allison Gas Turbines | Indianapolis | USA |
| Almaty University of Power Engineering | Almaty | KAZAKHSTAN |
| Alois Tost | Duesseldorf | GERMANY |
| AlphaStruxure | Springfield | USA |
| Alpiq Csepel Kft. | Budapest | HUNGARY |
| Alpiq Energia Italia S.p.A. | Novara | ITALY |
| ALSTOM Energie GmbH | Nurnberg | GERMANY |
| Alstom Gas Turbines Ltd. | Lincoln | UNITED KINGDOM |
| Alstom Gas Turbines Ltd. | Leicester | UNITED KINGDOM |
| Alstom Industrie S.A. | Rueil-Malmaison | FRANCE |
| ALSTOM K.K. | Kobe | JAPAN |
| Alstom Ltd. Russia | Moscow | RUSSIA |
| ALSTOM Power | Belfort Cedex | FRANCE |
| ALSTOM Power | Levallois-Perret | FRANCE |
| ALSTOM POWER | La Courneuve | FRANCE |
| ALSTOM POWER | Windsor | USA |
| ALSTOM Power (Switzerland) Ltd | Baden | SWITZERLAND |
| Alstom Power Asia Pacific Sdn Bhd | Kuala Langat | MALAYSIA |
| Alstom Power Asia Pacific Sdn Bhd | Kuala Lumpur | MALAYSIA |
| Alstom Power ECS | Knoxville | USA |
| Alstom Power Equipment & Materials | Riyadh | SAUDI ARABIA |
| ALSTOM Power Inc. | Richmond | USA |
| ALSTOM Power India Ltd. | New Delhi | INDIA |
| ALSTOM Power s.r.o. | Brno | CZECH REPUBLIC |
| Alstom Power Systems GmbH | Mannheim | GERMANY |
| Alstom Projects India Ltd. | Noida | INDIA |
| ALSTOM S.p.A. | Sesto San Giovanni | ITALY |
| Alter Nrg Corp. | Calgary | CANADA |
| Ambitech Engineering Corporation | Downers Grove | USA |
| AMEC | Oakville | CANADA |
| AMEC | Calgary | CANADA |
| AMEC | Greenville | USA |
| AMEC | Tucker | USA |
| AMEC BDR Limited | Calgary | CANADA |
| AMERESCO | Houston | USA |
| AMERESCO | Knoxville | USA |
| American Electric Power | Columbus | USA |
| American Ethane | Houston | USA |
| American Israeli Paper Co. | Hadera | ISRAEL |
| American Process Inc. | Atlanta | USA |
| American University of Beirut | Beirut | LEBANON |
| Amshale Louisiana LPG LLC | New Orleans | USA |
| Anderson & Associates | The Woodlands | USA |
| Anderson Energy Solutions | Southbank | AUSTRALIA |
| Anh Duong Power Engineering Consulting Co Ltd | Nha Trang City | VIETNAM |
| Anna, Inc. | Annapolis | USA |
| Ansaldo Energia S.p.A. | Genova | ITALY |
| Ansaldo Energia Switzerland | Baden | SWITZERLAND |
| Ansaldo North America | East Hanover | USA |
| Ansaldo Ricerche Srl | Genova | ITALY |
| Antares Group Inc. | Landover | USA |
| Antea Polska S.A. | Katowice | POLAND |
| APEX Cogen Inc. | Calgary | CANADA |
| Applied Power Associates Inc. | Omaha | USA |
| Applied Utility Systems, Inc. | Irvine | USA |
| APR Energy LLC | Jacksonville | USA |
| APS S.p.A. | Rome | ITALY |
| AQUILA | Kansas City | USA |
| Aquila Europe | Richmond-upon-Thames | UNITED KINGDOM |
| Arabian Bemco Contracting Co. | Jeddah | SAUDI ARABIA |
| Arabian Consulting & Engineering Services Co. | Tripoli | LIBYA |
| Aramco Services Company | Dhahran | SAUDI ARABIA |
| Arcadis Consulting (UK) Ltd. | Glasgow | UNITED KINGDOM |
| Archirodon | Aghia Par, Athens | GREECE |
| ARCO Integrated Power, Inc. | Los Angeles | USA |
| Areva Bioenergy GmbH | Bremen | GERMANY |
| AREVA Energies Renouvables SAS | Villenave d'Ornon | FRANCE |
| Areva Koblitz | Sao Paulo | BRAZIL |
| Areva Solar | Mountain View | USA |
| Areva Solar Inc. | Philadelphia | USA |
| Arizona Public Service | Phoenix | USA |
| Armstrong Service Inc. | Orlando | USA |
| Aroostook Valley Electric | Fort Fairfield | USA |
| Artelia | Choisy-le-Roi | FRANCE |
| ARTELIA A/S | Soborg | DENMARK |
| Artelia Eau & Environnement | Lyon | FRANCE |
| Arthur D. Little, Inc. | Boston | USA |
| Arup & Partners | London | UNITED KINGDOM |
| AS Filter | Harjumaa | ESTONIA |
| AS Latvenergo | Riga | LATVIA |
| ASB Valiant Company Limited | Lagos | NIGERIA |
| Asesoria Energetica S.A. | Barcelona | SPAIN |
| Asian Institute of Technology | Bangkok | THAILAND |
| AsiaPower Development Ltd. | Wellington | NEW ZEALAND |
| Asincro C. A. | Caracas | VENEZUELA |
| ASSYCE INGENIEROS | Granada | SPAIN |
| Assystem E&OS | Lyon | FRANCE |
| ASSYSTEM UK | Derby | UNITED KINGDOM |
| Astel-K LLP | Almaty | KAZAKHSTAN |
| Atco Emissions Management | Calgary | CANADA |
| ATCO Energy Solutions | Calgary | CANADA |
| ATCO Power Australia Pty. Ltd. | Adelaide | AUSTRALIA |
| Atco Power Canada LTD | Calgary | CANADA |
| ATCO Power Ltd. | London | UNITED KINGDOM |
| A-TEC Power Plant Systems AG | Vienna | AUSTRIA |
| Atkins Ltd. | Bellshill | UNITED KINGDOM |
| Atlantic Power Corporation | Boston | USA |
| ATS | Trezzano | ITALY |
| Auburndale Power | Auburndale | USA |
| Aurecon | Neutral Bay | AUSTRALIA |
| Aurecon | Spring Hill | AUSTRALIA |
| Aurecon South Africa | Pretoria | SOUTH AFRICA |
| AUSTA Energy | Brisbane | AUSTRALIA |
| Australian Nat. Low Emissions Res. & Dev. (ANLEC) | Barton | AUSTRALIA |
| Austrian Energy & Environment (Australia) Ltd. | North Ryde | AUSTRALIA |
| Authentic Venture Sdn Bhd | Petaling Jaya | MALAYSIA |
| Automated Engineering Services Corp. | Naperville | USA |
| Availability Resource, LLC | Maitland | USA |
| Avant-Garde Engineers & Consultants Pvt. Ltd. | Chennai | INDIA |
| Avebe | Veendam | THE NETHERLANDS |
| Avista Corporation | Spokane | USA |
| AXEN s.r.o. | Prague | CZECH REPUBLIC |
| AxEnergy | Pfaeffikon | SWITZERLAND |
| Ayesa | Seville | SPAIN |
| Ayuntamiento de Alburquerque | Alburquerque | SPAIN |
| B & A, Inc. | Kansas City | USA |
| B & B - AGEMA GmbH | Aachen | GERMANY |
| Baard Energy, LLC | Vancouver | USA |
| Babcock & Brown | Perth | AUSTRALIA |
| Babcock & Wilcox | Barberton | USA |
| Babcock & Wilcox Espanola | Madrid | SPAIN |
| Babcock & Wilcox Volund A/S | Esbjerg | DENMARK |
| Babcock & Wilcox Volund A/S | Glostrup | DENMARK |
| Babcock Hitachi K.K. | Hiroshima | JAPAN |
| Babcock Power Espana | Valle de Trapaga | SPAIN |
| Babes-Bolyai University | Cluj-Napoca | ROMANIA |
| Babtie Group Ltd. | Glasgow | UNITED KINGDOM |
| Bahamas Electricity Corp. | Nassau | BAHAMAS |
| Baker Hughes | Florence | ITALY |
| Baker Hughes | Milan | ITALY |
| Baker Hughes | Houston | USA |
| Baker Hughes | Kuala Lumpur | MALAYSIA |
| Baker Hughes | New York | USA |
| Baker Hughes (Vetco Gray Pte. Ltd.) | Singapore | SINGAPORE |
| Baker Hughes | Dubai | UNITED ARAB EMIRATES |
| Balfour Beatty Major Projects | Thornton Heath | UNITED KINGDOM |
| BANTREL | Calgary | CANADA |
| BASF | Ludwigshafen | GERMANY |
| Batelle Energy Alliance | Idaho Falls | USA |
| Bateman Engineering Ltd. | Yokneam | ISRAEL |
| Bateman Projects Limited - Power & Energy | Boksburg | SOUTH AFRICA |
| BATTELLE Pacific NW Laboratories | Richland | USA |
| Bayer AG | Leverkusen | GERMANY |
| Baymina Enerji A.S. | Ankara | TURKEY |
| BC-Hydro | Burnaby | CANADA |
| Beca Carter Hollings & Ferner | Tauranga | NEW ZEALAND |
| Bechtel Corporation | Houston | USA |
| Bechtel Ltd. | London | UNITED KINGDOM |
| Bechtel National, Inc. | San Francisco | USA |
| Bechtel Power Corporation | Frederick | USA |
| Bechtel Southern California | Norwalk | USA |
| Beijing Dianfa Electricity Consulting Company | Beijing | CHINA |
| Beijing Gas & Aero Power, Ltd. | Beijing | CHINA |
| Beijing Jingneng Intl. Energy Technology Co., Ltd. | Beijing | CHINA |
| Belcan Engineering Group | Cincinnati | USA |
| Belleli Energy SRL | Mantova | ITALY |
| BEMCO International Offshore sal | Beirut | LEBANON |
| Beng Chuan Pte Ltd. | Singapore | SINGAPORE |
| Benitez, Ing. Jose Antonio | Santa Fe de Bogota | COLOMBIA |
| Bently Nevada Corp. | Minden | USA |
| Bently Nevada Corp. | Macclesfield | UNITED KINGDOM |
| Bergen Engines India Pvt. Ltd. | New Delhi | INDIA |
| Bermaco Energy Systems Ltd. | New Mumbai | INDIA |
| Bermuda Electric Light & Gas | Hamilton | BERMUDA |
| Besicorp Group, Inc. | Kingston | USA |
| BG International Ltd. - Power Group | Reading | UNITED KINGDOM |
| BG plc / Cogen Group | London | UNITED KINGDOM |
| BG plc / Newcastle | Newcastle-upon-Tyne | UNITED KINGDOM |
| Bharat Heavy Electricals Ltd. | Haridwar | INDIA |
| Bharat Heavy Electricals Ltd. | Hyderabad | INDIA |
| Bharat Heavy Electricals Ltd. | Bangalore | INDIA |
| Bharat Heavy Electricals Ltd. | Tiruchirappalli | INDIA |
| Bharat Heavy Electricals Ltd. | Bhopal | INDIA |
| Bharat Heavy Electricals Ltd. | Noida | INDIA |
| BHI Company Limited | Seoul | SOUTH KOREA |
| Bibb & Associates, Inc. | Pasadena | USA |
| Bilfinger | Antwerp | BELGIUM |
| Bilfinger Tebodin Poland Sp. z o.o. | Warsaw | POLAND |
| Biomass Heating Solutions Ltd. (BHSL) | Ballagh | IRELAND |
| BKK Produksjon AS | Bergen | NORWAY |
| BKW FMB Energie AG | Bern 25 | SWITZERLAND |
| Black & Veatch | Cary | USA |
| Black & Veatch | Overland Park | USA |
| Black & Veatch Corporation | Ann Arbor | USA |
| Black & Veatch Corporation | Vestal | USA |
| Black & Veatch Corporation | New York | USA |
| Black & Veatch International | Beijing | CHINA |
| Black & Veatch Power (Thailand) | Bangkok | THAILAND |
| Black & Veatch Resource Center | Pune | INDIA |
| Black & Veatch Turkey | Ankara | TURKEY |
| Blue Energy Global Inc. | Edinburgh | Scotland |
| Bluefield State College - BSC R & D | Bluefield | USA |
| BOC Process Plants | Murray Hill | USA |
| BOC Process Plants / UK | Guildford | UNITED KINGDOM |
| BoilerCare SDN. BHD | Kuala Lumpur | MALAYSIA |
| Bonatti S.p.A. | Parma | ITALY |
| Boralex Inc. | Kingsey Falls | CANADA |
| Bosch KWK Systeme GmbH | Lollar | GERMANY |
| Boston Edison Co. | Boston | USA |
| Bower Damberger Rolseth Engineering Ltd. | Calgary | CANADA |
| Bowman Power Systems | South Hampton | UNITED KINGDOM |
| BP | Houston | USA |
| BP Alternative Energy | Singapore | SINGAPORE |
| BP Alternative Energy International | London | UNITED KINGDOM |
| BP Alternative Energy North America | Houston | USA |
| BP Amoco Brasil | Rio de Janeiro | BRAZIL |
| BP Cherry Point Refinery | Blaine | USA |
| BP Gas & Power | Houston | USA |
| BP Gas Marketing Ltd | Bucks | UNITED KINGDOM |
| BP Global Power / Hong Kong | Quarry Bay | HONG KONG |
| BP Oil Grangemouth Refinery | Grangemouth | UNITED KINGDOM |
| BP Singapore Pte. Ltd | Singapore | SINGAPORE |
| Bracell SP Celulose LTDA | Sao Paulo | BRAZIL |
| Braintree Electric Department | Braintree | USA |
| Brandenburgische Technische Universitaet | Cottbus | GERMANY |
| Bridgeport Energy LLC | Bridgeport | USA |
| Brightnight Power | West Palm Beach | USA |
| Brightsource Energy Israel | Har Hotzvim | ISRAEL |
| British Energy | Goole | UNITED KINGDOM |
| British Energy - Scottish Nuclear | Edinburgh | UNITED KINGDOM |
| British Power International | Colchester | UNITED KINGDOM |
| British Power International (Mexico) | Mexico D.F. | MEXICO |
| British Sugar plc | Peterborough | UNITED KINGDOM |
| British Sugar plc | Peterborough | UNITED KINGDOM |
| Brno University of Technology | Brno | CZECH REPUBLIC |
| Bronzeoak Limited | Caterham | UNITED KINGDOM |
| Brown & Root Ltd. | Leatherhead | UNITED KINGDOM |
| Brownworth Engineering Associates | Piscataway | USA |
| Bruce M. Langone | New York | USA |
| Bruel & Kjaer | Naerum | DENMARK |
| Brunei LNG Co Sdn Bhd | Darussalam | BRUNEI |
| BTEC Turbines LP | Houston | USA |
| BTU Cottbus, LS FTA | Kolkwitz | GERMANY |
| BTU Industries Holdings USA | Waltham | USA |
| Budapesti Erőmű ZRt | Budapest | HUNGARY |
| Bufete Industrial, S.A. de C.V. | Mexico City | MEXICO |
| Burns & McDonnell | Kansas City | USA |
| Burns & Roe | Pittsburgh | USA |
| Burns & Roe Enterprises, Inc. | Mount Laurel | USA |
| Burns & Roe Enterprises, Inc. | Oradell | USA |
| Burns & Roe Worley | North Sydney | AUSTRALIA |
| Burns & Roe Worley Pty. Ltd. | Perth | AUSTRALIA |
| Burns & Roe Worley Pty. Ltd. | Brisbane | AUSTRALIA |
| Bush Power Group | The Woodlands | USA |
| BUSI Power S.r.l. | Sesto San Giovanni | ITALY |
| Byucksan Engineering Co. Ltd. | Seoul | SOUTH KOREA |
| C.GEN N.V. | Antwerp | BELGIUM |
| Caldwell Energy & Enviromental Inc. | Louisville | USA |
| Calenia Energia SpA | Sparanise CE | ITALY |
| California Baptist University | Riverside | USA |
| California Energy Commission | Sacramento | USA |
| California Polytechnic State University | San Luis Obispo | USA |
| California State Polytechnic University | Pomona | USA |
| Calik Enerji | Istanbul | TURKEY |
| Calik Enerji | Tashkent | UZBEKISTAN |
| Calik Enerji San. Ve. Tic. A.S. | Merter | TURKEY |
| Calpine Corporation | Folsom | USA |
| Calpine Corporation | Houston | USA |
| Calpine Corporation | Pasadena | USA |
| Calpine Corporation | San Jose | USA |
| Calpine Eastern Corporation | Boston | USA |
| Calpine Power Corporation | Edmonton | CANADA |
| Camfil Farr Power Systems | Boras | SWEDEN |
| Canadian Gas Research Institute | Don Mills | CANADA |
| Canadian Nuclear Laboratories | Ontario | CANADA |
| CANMET Energy Technology Center | Ottawa | CANADA |
| Capex S.A. | Buenos Aires | ARGENTINA |
| Capstone Turbine Corporation | Chatsworth | USA |
| Careba Power Engineers LLC | Westwood | USA |
| Cargill Fertilizer | Riverview | USA |
| Carlo Gavazzi Impianti S.p.A. | Marcallo | ITALY |
| Carolina Power & Light Co. | Hamlet | ITALY |
| Carron Engineering & Construction Ltd. | Stokesley | UNITED KINGDOM |
| Carter & Burgess | Denver | USA |
| Carter & Burgess | Fort Worth | USA |
| Caterpillar Power Ventures Corp. | Nashville | USA |
| Cayuga Energy | Binghamton | USA |
| CBCL Limited | Halifax | CANADA |
| CdF Ingenierie | Freyming-Merlebach | FRANCE |
| CEA Americas | Coral Gables | USA |
| CEA Cadarache | Saint-Paul-Les-Durance | FRANCE |
| CEA Grenoble | Grenoble | FRANCE |
| CEA Stony Brook Operators, Inc. | Stony Brook | USA |
| CEGELEC | Saint-Denis | FRANCE |
| Cegelec AT GmbH & Co. KG | Frankfurt | GERMANY |
| CEI SpA | Milano | ITALY |
| Celsia S.A. E.S.P. | Medellin | COLOMBIA |
| Celsol SA De CV | Santa Catarina | MEXICO |
| Celtic Power International Limited | Dublin | IRELAND |
| CEM Engineering | St. Catharines | CANADA |
| CEMEX | San Pedro Garza Garcia | Mexico |
| Cemig Geracao e Transmissao S/A | Belo Horizonte | BRAZIL |
| Centennial College | Toronto | CANADA |
| Center for Clean Energy Technology CAS | Shanghai | CHINA |
| Center of Engineering & Design | Ekaterinburg | RUSSIA |
| Central Costanera S.A. | Buenos Aires | ARGENTINA |
| Central Electricity Authority (CEA) | New Delhi | INDIA |
| Central Hudson Enterprises Corp. | Syracuse | USA |
| Central Maine Power | Augusta | USA |
| Central Puerto | Buenos Aires | ARGENTINA |
| Central Research Institute | Chiba | JAPAN |
| Central South University | Changsha City | CHINA |
| Central Southern China Electric Power Design Inst. | Wuhan | CHINA |
| Centralschweizerische Kraftwerke | Luzern | SWITZERLAND |
| Centrax Ltd. | Newton Abbot | UNITED KINGDOM |
| Centrica Energy | Windsor | UNITED KINGDOM |
| CEPSA | Huelva | SPAIN |
| Cerchar | Mazingarbe | FRANCE |
| Cerney | Zaragoza | SPAIN |
| Cerrey S.A. De C.V. | San Nicolas de Los Garza | MEXICO |
| CES Aquisitions Corp. | Portland | USA |
| Cesel S. A. | San Isidro | PERU |
| Cesen SpA | Genova | ITALY |
| CESI SpA | Milano | ITALY |
| Cethar Engineering Consultancy | Chennai | INDIA |
| Cethar Vessels (P) Ltd. | Tiruchirappalli | INDIA |
| CEZ a.s. | Horni Pocaply | CZECH REPUBLIC |
| CFE-C.T. Adolfo Lopez Mateos | Tuxpan | MEXICO |
| CFE-C.T. Francisco Perez Rios | Tula de Allende | MEXICO |
| CFE-C.T. Jose Lopez Portillo (Rio Escondido) | Nava | MEXICO |
| CFE-C.T. Manuel Moreno Torres | Manzanillo | MEXICO |
| CFE-C.T. Plutarco Alias Calles | Petacalco | MEXICO |
| CFE-Subgerencia Regional de Generacion Baja California | Mexicali | MEXICO |
| CFE-Subgerencia Regional de Generacion Centro Norte | Gomez Palacio | MEXICO |
| CFE-Subgerencia Regional de Generacion Peninsular | Merida | MEXICO |
| CH2M Hill | Englewood | USA |
| CH2MHILL Lockwood Greene | Atlanta | USA |
| CH2MHILL Lockwood Greene S. A. | Buenos Aires | ARGENTINA |
| CHA Consulting, Inc. | Albany | USA |
| Cheming | Pardubice | CZECH REPUBLIC |
| Chemtech Servicos de Engenharia e Software Ltda. | Rio de Janeiro | BRAZIL |
| Chevron | Richmond | USA |
| Chevron Energy Solutions | Costa Mesa | USA |
| Chevron Energy Solutions | San Francisco | USA |
| Chevron Energy Solutions LP | Houston | USA |
| Chevron Energy Solutions LP | Bethesda | USA |
| Chevron Global Power Generation | Singapore | SINGAPORE |
| Chevron Global Power Generation | Houston | USA |
| Chevron Nigeria | Lagos | NIGERIA |
| ChevronTexaco Worldwide Power & Gasification | Bakersfield | USA |
| ChevronTexaco Worldwide Power & Gasification Inc. | Houston | USA |
| CHI Canada, Inc. | Westmount | CANADA |
| CHI Energy, Inc. | Houston | USA |
| China CEC Corp | Hunan | CHINA |
| China City Environmental Protection Eng. Ltd. Co. | Wuhan | CHINA |
| China Ecotek Corporation | Kaoshsiung | TAIWAN |
| China Energy Engineering Group - ZEPDI | Hangzhou, Zhejiang | CHINA |
| China Huadian Engineering Company Ltd. | Beijing | CHINA |
| China National Offshore Oil Corp. - CNOOC | Beijing | CHINA |
| China Power JEPDI | Nanjing City | CHINA |
| China Shipbuilding New Power Co., Ltd | Beijing | CHINA |
| China United Gas Turbine Technology Co., LTD. | Beijing | CHINA |
| Chinook Sciences LLC | Cranford | USA |
| Chiyoda Corp.- IPP Business Development | Yokohama | JAPAN |
| Chiyoda International Corporation | Houston | USA |
| CHP Consultoria de Energia S/C Ltda. | Sao Paulo | BRAZIL |
| Chubu Electric Power Co., Inc. | Nagoya | JAPAN |
| Chung-An University | Seoul | SOUTH KOREA |
| CHx Engineering Co. | Presque Isle | USA |
| CIE SpA | Torino | ITALY |
| Ciemat | Madrid | SPAIN |
| CIMA + | Sherbrooke | CANADA |
| CIMTAS | Istanbul | TURKEY |
| CITEC | Katowice | POLAND |
| CITEC Oy AB | Turku | FINLAND |
| CITEC Oy AB | Vaasa | FINLAND |
| CITIC Pacific Mining Management Pty Ltd. | Cape Preston | AUSTRALIA |
| City for Scientific Research & Technological Apps. | Alexandria | EGYPT |
| City of Los Angeles | El Segundo | USA |
| CKD Export | Praha | CZECH REPUBLIC |
| Clariant Produkte (Deutschland) GmbH | Planegg | GERMANY |
| CLP Power Hong Kong Limited | Tuen Mun N.T. | HONG KONG |
| Clyde Babcock-Hitachi (Australia) Pty Ltd. | Milton | AUSTRALIA |
| CMI Cockerill Maintenance & Ingenierie | Seraing | BELGIUM |
| CMI Cockerill Maintenance & Ingenierie | Willebroek | BELGIUM |
| CMI-HRSG/USA | Louisville | USA |
| CMPC Celulose Riograndense Ltda. | Ermo-Guaiba | BRAZIL |
| CMS Generation | Dearborn | USA |
| CNEC Engenharia S. A. | Sao Paulo | BRAZIL |
| CNF Industries | San Francisco | USA |
| CNIM | La Seyne Sur Mer Cedex | FRANCE |
| CNOOC Petrochemical Engineering Co. Ltd. | Jinan | CHINA |
| CNOOC Shangdong Chemical Engineering Co. | Jinan City | CHINA |
| CNR - Instituto Motori | Naples | ITALY |
| CNR - Istituto Motori | Naples | ITALY |
| CNRS Centre National de la Recherche Scientifique | Font-Romeu | FRANCE |
| Coal Products Ltd. | Chesterfield | UNITED KINGDOM |
| Coastal Power Development Co. | Houston | USA |
| Cobra Brasil Serviçios, Comunicações e Energia S.A. | Rio de Janeiro | BRAZIL |
| Cobra Energia | Madrid | SPAIN |
| Cochrane Engineering Ltd. (formerly NEPCAN) | Vancouver | CANADA |
| Coen Company, Inc. | Foster City | USA |
| Cofathec Projis | Saint Ouen | FRANCE |
| Cofely GDF Suez | Hospitalet de Llobregat | SPAIN |
| Cofely GDF Suez | Sheffield | UNITED KINGDOM |
| COGEN Projects | Driebergen | THE NETHERLANDS |
| Cogeneracion y Ahorro de Energia Ltda. | Santa Fe de Bogota | COLOMBIA |
| Cogeneration Partners of America | Cherry Hill | USA |
| Cogeneration Technologies | Houston | USA |
| Cogeneration Technology Service Co., Ltd. | Osaka | JAPAN |
| Cogentrix Energy, Inc. | Charlotte | USA |
| Colbun Energia es Futuro | Santiago | CHILE |
| Colmaquinas S A | Bogota | COLOMBIA |
| Colorado State University | Ft. Collins | USA |
| Colt Engineering Corp | Calgary | CANADA |
| Colterm | Timisoara | ROMANIA |
| Columbia Energy Group | Columbus | USA |
| Comart SpA | Mezzano | ITALY |
| COMEF GROUP | Tradate VA | ITALY |
| Comision Federal de Electricidad | Morelia | MEXICO |
| Comision Federal de Electricidad | Veracruz | MEXICO |
| Comision Federal de Electricidad | Mexico D.F. | MEXICO |
| Comision Federal de Electricidad | Irapuato | MEXICO |
| Commonwealth Associates | Jackson | USA |
| Companhia Hidroeletrica do Sao Francisco-CHESF | Recife | BRAZIL |
| Companhia Portuguesa de Producao de Electricidade | Lisbon | PORTUGAL |
| Compania Sevillana de Electricidad | Sevilla | SPAIN |
| Comprimo b.v. | Amsterdam | THE NETHERLANDS |
| Con Edison | New York | USA |
| Con Edison Development, Inc. | New York | USA |
| Concord Engineering | Peru | USA |
| ConocoPhillips | Houston | USA |
| ConocoPhillips (UK) Limited | London | UNITED KINGDOM |
| Consolidated Asset Management Services | Houston | USA |
| Consolidated Contractors International Company | Athens | GREECE |
| Constellation Power | Apple Valley | USA |
| Constellation Power Source Generation | Baltimore | USA |
| Construtora Andrade Gutierrez S A | Sao Paulo | BRAZIL |
| Consulgaz, Inc. | Montreal | CANADA |
| Consultores Energeticos Ltda. | Santa Fe de Bogota | COLOMBIA |
| Consumers Energy | Jackson | USA |
| Contour Global LLC | New York | USA |
| Coral Energy | Houston | USA |
| Costain Oil, Gas Process Ltd. | Manchester | UNITED KINGDOM |
| Courtaulds Engineering Ltd | Coventry | UNITED KINGDOM |
| Covanta Energy Corporation | Fairfield | USA |
| CO-VER Engineering Srl | Verbania | ITALY |
| COVESTRO Deutschland GmbH | Leverkusen | GERMANY |
| COWI A/S | Arhus | DENMARK |
| CPECC - East China Design Branch | Qingdao | CHINA |
| CPG Consultants | Calgary | CANADA |
| CPPE | Lisbon | PORTUGAL |
| Cranfield University | Cranfield | UNITED KINGDOM |
| CRE Group Ltd. | Cheltenham | UNITED KINGDOM |
| CRG Energy Consultants, Inc. | Macungie | USA |
| CRIEPI | Yokosuka | JAPAN |
| CROC Incorporated | Moscow | RUSSIA |
| CRS Ingenieria | Mexico City | MEXICO |
| CRSS Capital, Inc. | Houston | USA |
| CSI Ingenieros S.A. | Montevideo | URUGUAY |
| CSIRO Energy Technology | Mayfield West | AUSTRALIA |
| CT Main Engenheiros | Sao Paulo | BRAZIL |
| CTCI Corporation | Taipei | TAIWAN |
| CTG Engineering LLC | Portland | USA |
| CTPartsCo | Davidson | USA |
| CU Power International Ltd. | Edmonton | CANADA |
| CUBIS AG | Essen | GERMANY |
| CVUT - Czech Technical University | Praha | CZECH REPUBLIC |
| CYIENT Ltd. | Hyderabad | INDIA |
| D Schmalzer Services LLC | Clifton | USA |
| Daekyung Machinery & Engineering Co Ltd | Seoul | SOUTH KOREA |
| Daelim Industrial Co., Ltd. | Seoul | SOUTH KOREA |
| Daewoo Construction Co. Ltd. | Seoul | SOUTH KOREA |
| Daewoo Corporation | Seoul | SOUTH KOREA |
| Daewoo Engineering Co. | Seongnam City | SOUTH KOREA |
| Daewoo Shipbuilding and Marine Engineering Co Ltd | Seoul | SOUTH KOREA |
| Dalkia | Paris La Defense | FRANCE |
| Dalkia (China) Energy Management Ltd. | Chaoyang | CHINA |
| Dalkia Est | Essey Les Nancy | FRANCE |
| Dalmine Energie SpA | Dalmine | ITALY |
| Daniel Ricca S.A. | Buenos Aires | ARGENTINA |
| Datech Group - Gaz Metropolitain | Boucherville | CANADA |
| David Gardner Consulting | Somerset | UNITED KINGDOM |
| DCO Energy, LLC | Mays Landing | USA |
| De Koninklijke Schelde Groep | Vlissingen | THE NETHERLANDS |
| DEA-Mineraloel AG | Wesseling | GERMANY |
| Dearborn Generation Operating, LLC | Dearborn | USA |
| Dedini S/A Industria de Base | Piracicaba | BRAZIL |
| Delek Infrastructures | Netania | ISRAEL |
| Delgado Consultants International, LLC | Sugarland | USA |
| Deloitte Advisory s.r.o. | Praha | CZECH REPUBLIC |
| Deltak, A Unit of Jason | Plymouth | USA |
| Demag Delaval Turbomachinery Corp. | Trenton | USA |
| Demkolec | Haelen | THE NETHERLANDS |
| DESA s.r.l. | Torino | ITALY |
| DESA-OTAK Engineering and Contracting, Inc. | Izmir | TURKEY |
| Descon Engineering Limited | Lahore | PAKISTAN |
| Desein International Pvt. Ltd. | New Delhi | INDIA |
| Destec Energy Inc. | Houston | USA |
| DETISA / CEPSA | Madrid | SPAIN |
| Detroit Edison Co. | Detroit | USA |
| Deutsche Babcock Riley | Worcester | USA |
| Development Consultants Pvt Ltd. (DCPL) | Kolkata | INDIA |
| DiagnostiQA Consultoria Tecnica, S.L. | Madrid | SPAIN |
| Distral S.A. | Santa Fe de Bogota | COLOMBIA |
| Distributed Energy & Power North America | Houston | USA |
| Distributed Energy & Power North America | Iselin | USA |
| dk-TEKNIK | Soborg | DENMARK |
| DLR | Stuttgart | GERMANY |
| DNV GL | Singapore | SINGAPORE |
| Dodsal Engineering & Construction Pte. Ltd. | Dubai | UNITED ARAB EMIRATES |
| Dofasco Inc. | Hamilton | CANADA |
| Doga Enerji A.S. | Istanbul | TURKEY |
| Dohwa Engineering Co. Ltd. | Seoul | SOUTH KOREA |
| Dolezal and Associates, Inc. | Ridgecrest | USA |
| Dominion Energy, Inc. | Glen Allen | USA |
| Dominion Fairless Energy | Fairless Hills | USA |
| Dominion Possum Point Power Station | Dumfries | USA |
| Dominion Virginia Power | Clarksville | USA |
| Dong Energy | Fredericia | DENMARK |
| Dong Energy | Copenhagen | DENMARK |
| Dong Energy | Stokesley | UNITED KINGDOM |
| Dong Fang Steam Turbine Works | Deyang City | CHINA |
| Doosan Babcock Energy | Crawley | UNITED KINGDOM |
| Doosan Babcock Energy | Renfrew | UNITED KINGDOM |
| Doosan Engineering & Services Ltd. | Gurgaon | INDIA |
| Doosan Engineering Services LLC | Oradell | USA |
| Doosan Heavy Industries | Chang Won | SOUTH KOREA |
| Doosan Heavy Industries | Kyeongsangnam-Do | SOUTH KOREA |
| Doosan Heavy Industries & Construction | Changwon-Si | SOUTH KOREA |
| Doosan Heavy Industries & Construction Co. Ltd. | Seoul | SOUTH KOREA |
| Doosan Power Systems America (DPSA) | Atlanta | USA |
| Dor Alon Gas Technologies Ltd. | Yakum | ISRAEL |
| Dow Corning Limited | Barry | UNITED KINGDOM |
| Downer Energy Systems Pty Ltd | Woolloongabba | AUSTRALIA |
| Dowon Engineering Co. Ltd. | Seoul | SOUTH KOREA |
| Dragados Proyectos Industriales de Mexico S.A. | Col. Los Morales Polanco | MEXICO |
| Drax Corporate Ltd | London | UNITED KINGDOM |
| Dresser-Rand | Bridgewater | USA |
| Dresser-Rand | Houston | USA |
| Dresser-Rand A/S | Kongsberg | NORWAY |
| Dresser-Rand | Bellevue | USA |
| DTE Energy Services | Ann Arbor | USA |
| DTE Energy Services Inc. | Ann Arbor | USA |
| DTU | Kgs. Lyngby | DENMARK |
| Du Pont UK LTD | Londonderry | UNITED KINGDOM |
| Duke / Fluor Daniel | Camberley | UNITED KINGDOM |
| Duke / Fluor Daniel | Charlotte | USA |
| Duke / Fluor Daniel | Sugarland | USA |
| Duke / Fluor Daniel, Inc. | Aliso Viejo | USA |
| Duke Energy | Charlotte | USA |
| Duke Energy Australia Pty Ltd | Sydney | AUSTRALIA |
| Duke Energy International | Melbourne | AUSTRALIA |
| Duke Energy North America | Charlotte | USA |
| Duke Engineering & Services | Charlotte | USA |
| DumluPINAR Universitesi | Kutahya | TURKEY |
| Dunamenti Power | Szazhalombatta | HUNGARY |
| Duos Technologies, Inc | Jacksonville | USA |
| Dupont | Houston | USA |
| Dupont Canada Inc. | Maitland | CANADA |
| Dupont DE | Wilmington | USA |
| Duro Felguera, S.A. | Gijon | SPAIN |
| DV Santos S.A. | Guayaquil | ECUADOR |
| Dynamis Mechanical Aplicada Ltda | Sao Paulo | BRAZIL |
| Dynegy, Inc. | Houston | USA |
| E&C Engineering | Taipei | TAIWAN |
| E.I. Du Pont | Wilmington | USA |
| E.ON Benelux Holdings b.v. | Rotterdam | THE NETHERLANDS |
| E.ON Energie AG | Hannover | GERMANY |
| E.ON Energie Projects GmbH | Munchen | GERMANY |
| E.ON Engineering b.v. | Rotterdam | THE NETHERLANDS |
| E.ON Engineering GmbH | Gelsenkirchen | GERMANY |
| E.ON Masdar Integrated Carbon (EMIC) | Abu Dhabi | UNITED ARAB EMIRATES |
| E.ON Russia OJSC | Yugra-Sugrut | RUSSIA |
| E.ON UK | Nottingham | UNITED KINGDOM |
| E.ON UK | Coventry | UNITED KINGDOM |
| E/PRO Engineering & Environmental Consulting, LLC | Augusta | USA |
| East China Electric Power Design Institute | Shanghai | CHINA |
| East China Engineering Science and Technology Co., Ltd. | Hefei | CHINA |
| East Coast Power | Linden | USA |
| East Coast Power | Houston | USA |
| Eastman Gasification Services | Kingsport | USA |
| Easy Energy Companies & Consulting (EECC) | Mezzovico | SWITZERLAND |
| Eau Tech Partners | Redmond | USA |
| Ebara Corporation | Tokyo | JAPAN |
| Ebasco Services, Inc. | New York | USA |
| EC-ASEAN COGEN Programme | Klong Luang | THAILAND |
| Echogen Power Systems | Akron | USA |
| ECM Energy Cost Management | BM Ede | THE NETHERLANDS |
| ECN - Netherlands Energy Research Foundation | Petten | THE NETHERLANDS |
| EcoElectrica, LP | Penuelas | PUERTO RICO |
| Ecogen Brasil Solucoes | Sao Paulo | BRAZIL |
| Ecolaire Espana S.A. | Madrid | SPAIN |
| Ecole Des Mines De Paris | Nantes | FRANCE |
| Ecopetrol | Santander | COLOMBIA |
| ECOS Engineering Srl | Rome | ITALY |
| Ecotek Investments, Inc. | Panama City | PANAMA |
| EDF - CIT | Paris La Defense | FRANCE |
| EDF - DER | Chatou Cedex | FRANCE |
| EDF - SEFOR | Clamart | FRANCE |
| EDF - SEPTEN | Villeurbanne | FRANCE |
| EDF (Beijing) Energy Consulting Co. Ltd. | Beijing | CHINA |
| EDF (Lingbao) Heat & Power Co. Ltd. | Lingbao | CHINA |
| EDF Energy Ltd. | Retford, Nottinghamshire | UNITED KINGDOM |
| EDF GDF | Les Mureaux | FRANCE |
| EDF GDF | Saint Denis | FRANCE |
| EDF International Division - Middle East | Manama | BAHRAIN |
| EDG International | Tulsa | USA |
| Edipower SpA | Sesto San Giovanni | ITALY |
| Edison Mission Energy | Singapore | SINGAPORE |
| Edison Mission Energy | Deeside | UNITED KINGDOM |
| Edison Mission Energy Ltd. | London | UNITED KINGDOM |
| Edison Mission Services Ltd. | Spondon | UNITED KINGDOM |
| EDISON S.p.A. | Sesto S. Giovanni | ITALY |
| EDP Renewables Europe, S.L.U. | Lisboa | PORTUGAL |
| EES Consulting | Kirkland | USA |
| EEW Co. | Concord | USA |
| EFACEC Engenharia e Sistemas S.A | Carnaxide | PORTUGAL |
| Effective Project Corporation | Overland Park | USA |
| Efor Makina Co | Ankara | TURKEY |
| Egyptian Electricity Authority | Cairo | EGYPT |
| Ekonerg Ltd. | Zagreb | CROATIA |
| Ekono Energy Ltd. | Espoo | FINLAND |
| Ekono Energy Ltd. | Helsinki | FINLAND |
| El Paso Electric Co. | El Paso | USA |
| El Paso Energy | Bakersfield | USA |
| El Paso Energy International do Brazil LTDA | Rio de Janeiro | BRAZIL |
| El Paso Merchant Energy | Houston | USA |
| El Sewedy PSP | Cairo | EGYPT |
| ELC Electroconsult | Milano | ITALY |
| Elecnor S.A. | Madrid | SPAIN |
| Electic Works Company | Calgary | CANADA |
| Electrabel | Brussels | BELGIUM |
| Electrabel | Linkebeek | BELGIUM |
| Electrabel | Strepy-Braquegnies | BELGIUM |
| Electrabel Deutschland AG | Berlin | GERMANY |
| Electrabel NL | Zwolle | THE NETHERLANDS |
| Electric Power Research Institute Inc. (EPRI) | Palo Alto | USA |
| Electric Power Systems Engineering Company | Cairo | EGYPT |
| Electricidade de Portugal S.A. (EDP) | Lisbon | PORTUGAL |
| Electricity Authority of Cyprus | Nicosia | CYPRUS |
| Electricity Generating Public Co. Ltd. - EGCO | Bangkok | THAILAND |
| Electrogas Malta | Marsaskala | MALTA |
| ElectroGen International | Houston | USA |
| Elsamprojekt I/S | Fredericia | DENMARK |
| Elsamprojekt Polska | Warszawa | POLAND |
| ELTEM-TEK | Ankara | TURKEY |
| Elyo Italia S.r.l. | Milano | ITALY |
| EMCOR ENERGY SERVICES | San Francisco | USA |
| EMI Advisors | Bethesda, MD | USA |
| Emirates Global Aluminium | Abu Dhabi | UNITED ARAB EMIRATES |
| Empresa de Ingenieria ENDESA S.A | Santiago | CHILE |
| Empresarios Agrupados, A.I.E. | Madrid | SPAIN |
| Enace S.A. | Adrogue | ARGENTINA |
| Enagas S.A. | Madrid | SPAIN |
| EnbW Energie Baden-Wurttemberg AG | Karlsruhe | GERMANY |
| EnBW Energy Solutions GmbH | Stuttgart | GERMANY |
| EnBW Kraftweke AG | Stuttgart | GERMANY |
| EnCana Energy Services | Calgary | CANADA |
| ENDESA SERVICIOS S.L. | Madrid | SPAIN |
| ENEL | Rome | ITALY |
| Enel Green Power S.p.A. | Pisa | ITALY |
| ENEL Greenpower | Rome | ITALY |
| ENEL Servizi Srl - Polo Termico | Pisa | ITALY |
| EnelPower SpA | Milano | ITALY |
| EnelPower SpA | Rome | ITALY |
| ENERCO Engineering & Consulting GmbH | Viernheim | GERMANY |
| Enercon Services | Kennesaw | USA |
| ENERCONSULT S. A. | Sau Paulo | BRAZIL |
| Energetix | Oklahoma City | USA |
| Energi E2 A/S | Copenhagen SV | DENMARK |
| Energia Sogap V.S.A. de C.V. | Mexico City | MEXICO |
| Energieconsulting Heidelberg AG | Berlin | GERMANY |
| Energieconsulting Heidelberg AG | Ratingen | GERMANY |
| Energieconsulting Heidelberg AG | Heidelberg | GERMANY |
| Energieconsulting Heidelberg AG | Dresden | GERMANY |
| Energing Gas y Electricidad | Caracas | VENEZUELA |
| Energiro Design LLC | Oviedo | USA |
| Energo Engineering Projects Ltd. | New Delhi | INDIA |
| Energopomiar | Gliwice | POLAND |
| Energoprojekt Entel | Belgrade | SERBIA & MONTENEGRO |
| EnergoProjekt Gliwice SA | Gliwice | POLAND |
| Energoprojekt Katowice S.A. | Katowice | POLAND |
| Energoprojekt Praha a.s. | Praha | CZECH REPUBLIC |
| Energotechnika - Energorozruch S.A. | Gliwice | POLAND |
| Energy International | Doral | USA |
| Energy Max Ltd. | Stara Zagora | BULGARIA |
| Energy Services | Little Rock | USA |
| Energy Storage & Power Corporation | Basking Ridge | USA |
| Energy Vault | Westlake Village | USA |
| energy33 | Coral Springs | USA |
| EnergyFog Systems / Gryphon Technologies | Garches | FRANCE |
| EnergyWorks | Arnold | USA |
| EnergyWorks do Brasil, Ltda. | Sao Paulo | BRAZIL |
| EnergyWorks Venezuela | Caracas | VENEZUELA |
| ENERTEC Naftz & Partner OG | Graz | AUSTRIA |
| Enfinium | West Yorkshire | UNITED KINGDOM |
| ENGIE CC | Brussels | BELGIUM |
| ENGIE EMS | Linkebeek | BELGIUM |
| ENGIE Energia Polska S.A. | Polaniec | POLAND |
| ENGIE Energie Nederland N.V. | Rotterdam | THE NETHERLANDS |
| ENGIE Mexico | Mexico | MEXICO |
| ENGIE South East Asia Pte. Ltd. | Singapore | SINGAPORE |
| Engineers India Limited (EIL) | New Delhi | INDIA |
| Enhanced Turbine Output LLC | Washington | USA |
| ENI | Ferrera Erbognone | ITALY |
| ENI Div. Refining & Marketing | Roma | ITALY |
| ENI Raffineria di Gela | Caltanissetta | ITALY |
| ENI Research Centre Novara | Novara | ITALY |
| ENI SpA | San Donato Milanese | ITALY |
| ENI SpA | Sannazzaro de' Burgondi | ITALY |
| ENIA SpA | Reggio Emilia | ITALY |
| ENIPOWER S.p.A. | San Donato Milanese | ITALY |
| EniProgetti | San Donato Milanese | ITALY |
| Enka Insaat ve San. A. S. | Istanbul | TURKEY |
| ENKA TEKNIK | Istanbul | TURKEY |
| Enkon | Istanbul | TURKEY |
| EnKorTek Engineering & Consultancy | Ankara | TURKEY |
| ENMAX | Calgary | CANADA |
| ENPRO Engineering Co. Ltd. | Ankara | TURKEY |
| Enprode Engineering & Consulting | Istanbul | TURKEY |
| ENRON - Global Asset Ops | Houston | USA |
| ENRON Engineering & Construction | Houston | USA |
| ENRON Engineering & Operational Services | Houston | USA |
| ENRON Europe Ltd. | London | UNITED KINGDOM |
| ENRON Power Operations Ltd. | Middlesbrough | UNITED KINGDOM |
| ENTEK A.S. | Bursa | TURKEY |
| ENTEL GULFICO | Doha | QATAR |
| Entergy Corp. | Baton Rouge | USA |
| Entergy Corporation | New Orleans | USA |
| Entergy Power Group | Irvine | USA |
| Entergy Power Group | London | UNITED KINGDOM |
| Entergy Power Group | The Woodlands | USA |
| Entergy Power Group | Fort Lauderdale | USA |
| Envi Con Engineering GmbH | Nuernberg | GERMANY |
| Environmental Management | Berkeley | USA |
| EP Langage | Plymouth | UNITED KINGDOM |
| EP Produzione SpA | Lodi | ITALY |
| EPCOR | Edmonton | CANADA |
| EPCOR USA | Oakbrook | USA |
| EPE-Empresa Produtora de Energia Ltda. | Cuiaba | BRAZIL |
| E-Power Engineering Co. Ltd. | Seoul | SOUTH KOREA |
| E-Power GmbH | Langen | GERMANY |
| EPP JV | Ankara | TURKEY |
| EPS, Inc. | Atlanta | USA |
| ERA LLC | Moscow | RUSSIA |
| ERAS | Schiltigheim Cedex | FRANCE |
| Erbeko b.v. | Hilversum | THE NETHERLANDS |
| EREN Holding Anonim Sirketi | Istanbul | TURKEY |
| ERG Power & Gas SpA | Priolo Gargallo | ITALY |
| ESB | Waterford | IRELAND |
| ESB International Ltd. | Dublin | IRELAND |
| ESBI Energy Company | Houston | USA |
| Escola de Engenharia de Piracicaba (EEP) | Piracicaba (SP) | BRAZIL |
| Escola Politecnica da USP | Sao Paulo | BRAZIL |
| ESE S.r.l. | Milano | ITALY |
| ESI Inc. of Tennessee | Kennesaw | USA |
| ESIN Consultora Sociedad Anonima | Quito | ECUADOR |
| Eskom Holdings Limited | Sunninghill | SOUTH AFRICA |
| ESKOM Holdings Ltd. | Cleveland | SOUTH AFRICA |
| ESSO (Thailand) Public Co., Ltd. | Sriracha | THAILAND |
| Esso Petroleum Co. Ltd. | Southampton | UNITED KINGDOM |
| ETEA S.r.l. | Saluzzo (CN) | ITALY |
| Etec Construction | Seoul | SOUTH KOREA |
| Etimaad Engineering Pvt. Ltd. | Lahore | PAKISTAN |
| EUDORA Energia | Sau Paulo | BRAZIL |
| EURAC Research | Bolzano | ITALY |
| EUROIL Industrial and Trade Co Ltd | Budapest | HUNGARY |
| EuroPower | Gallarate | ITALY |
| EUTY | Groot-Bijgaarden | BELGIUM |
| Evonik STEAG AG (Singapore) | Singapore | SINGAPORE |
| Exelon Powerteam | Kennett Square | USA |
| EXERGON Sp. Z.o.o. | Gliwice | POLAND |
| Exergy Engineering Inc. | GyungGi Do | SOUTH KOREA |
| Exergy SpA | Olgiate Olona | ITALY |
| Exponent Failure Analysis Associates | Warsaw | POLAND |
| Exxon Production Research Co. | Houston | USA |
| ExxonMobil | Baton Rouge | USA |
| ExxonMobil Asia Pacific Pte Ltd | Singapore | SINGAPORE |
| ExxonMobil Chemical Co. | Baytown | USA |
| ExxonMobil Corporation | Houston | USA |
| ExxonMobil Development Company | Houston | USA |
| ExxonMobil Energy Limited | Central | HONG KONG |
| ExxonMobil Engineering Europe Ltd. | Fawley | UNITED KINGDOM |
| ExxonMobil Gas Inc. | Singapore | SINGAPORE |
| ExxonMobil Gas Marketing Company | Houston | USA |
| ExxonMobil Petroleum & Chemical | Antwerpen | BELGIUM |
| ExxonMobil Research & Engineering | Fairfax | USA |
| ExxonMobil Upstream Research Company | Houston | USA |
| EZH n.v. | Maasvlakte (RT) | THE NETHERLANDS |
| EZH n.v. | Voorburg | THE NETHERLANDS |
| EZOM Ltd. | Beer Sheva | ISRAEL |
| Fabricom GTI | Aartselaar | BELGIUM |
| Fabricom GTI | Moerdijk | THE NETHERLANDS |
| Fabricom S.A. | Grimbergen | BELGIUM |
| Fachhochschule Augsburg | Augsburg | GERMANY |
| Fachhochschule Giessen-Friedberg | Giessen | GERMANY |
| Factory Mutual Engineering, Inc. | Norwood | USA |
| Falcon Seaboard Co. | Houston | USA |
| Falcon Seaboard Resources, Inc. | London | UNITED KINGDOM |
| FATA EPC, Div. of FATA Group SpA | Pianezza | ITALY |
| Fatima Energy | Lahore | PAKISTAN |
| Felguera I.H.I. S.A. | Madrid | SPAIN |
| Fellow Engineers | Bangkok | THAILAND |
| Fenice SpA | Arese | ITALY |
| FERA Srl | Milano | ITALY |
| Ferrostaal Lda | Lisbon | PORTUGAL |
| Ferrostaal Power GmbH | Saarlouis | GERMANY |
| FEST - Fundacao Espiritosantense deTecnologia | Bairro Goiabeiras | BRAZIL |
| FGP Corp. | Ortigas | THE PHILIPPINES |
| Fiat Energia S.p.A. | Torino | ITALY |
| Fichtner - Carl Bro a/s | Odense | DENMARK |
| Fichtner Consulting Engineers India Pvt Ltd. | Chennai | INDIA |
| Fichtner Consulting Engineers India Pvt Ltd. | Bangalore | INDIA |
| Fichtner Consulting Engineers Limited | Stockport | UNITED KINGDOM |
| Fichtner GmbH & Co. KG | Stuttgart | GERMANY |
| Fichtner USA, Inc. | Marietta | USA |
| Fincantieri | Riva Trigoso | ITALY |
| Fincantieri SpA | Genova | ITALY |
| Fjernvarme Fyn Service A/S | Odense | DENMARK |
| Florida Electric Power & Light | Juno Beach | USA |
| Florida Power Corporation | St. Petersburg | USA |
| Fluor Canada Ltd. | Calgary | CANADA |
| Fluor Daniel B.V. | Haarlem EJ | THE NETHERLANDS |
| Fluor Daniel, Inc. | Marlton | USA |
| Fluor Daniels Inc. | Muntinlupa City | THE PHILIPPINES |
| Fluor Enterprises | Greenville | USA |
| Fluor Enterprises | Mount Laurel | USA |
| Fluor Enterprises, Inc | Sugar Land | USA |
| Fluor Enterprises, Inc. | Aliso Viejo | USA |
| Fluor Enterprises, Inc. | Charlotte | USA |
| Fluor Ltd. | Camberley | UNITED KINGDOM |
| Fluor S.A. | Madrid | SPAIN |
| FM Global | Johnston | USA |
| FMT-Instandhaltung GmbH fur Industrieanlagen | Dusseldorf | GERMANY |
| ForeRunner Corp. | Lakewood | USA |
| Forge Group Ltd. | Balcatta | AUSTRALIA |
| Formosa Plastics Corp., USA | Livingston | USA |
| Forney Corporation | Carrolton | USA |
| Forsgren Associates | Salt Lake City | USA |
| Forsmarks Kraftgrupp AB | Osthammer | SWEDEN |
| Fosdick Hilmer Consulting Engineers | Cincinnati | USA |
| Foster Wheeler / NJ | Livingston | USA |
| Foster Wheeler Asia Pacific Pte Ltd. | Singapore | SINGAPORE |
| Foster Wheeler Energia S. A. | Madrid | SPAIN |
| Foster Wheeler Energy Fakop | Sosnowiec | POLAND |
| Foster Wheeler Energy Limited | Reading | UNITED KINGDOM |
| Foster Wheeler International Corporation | Chonburi | THAILAND |
| Foster Wheeler Power Group Inc. | Clinton | USA |
| Fotowatio Desarrollo Renovables S.L. | Madrid | SPAIN |
| Framatome ANP - Duke Engrg & Services | Naperville | USA |
| Fraser Papers Inc. | Stamford | USA |
| Fraunhofer ISE | Freiburg | GERMANY |
| Fraunhofer UMSICHT | Oberhausen | GERMANY |
| Frazer-Nash Consultancy Ltd. | Burton-on-Trent | UNITED KINGDOM |
| FRENE S.r.l. | San Donato Milanese | ITALY |
| Fru-Con Engineering Inc. | Ballwin | USA |
| FSG Technologies Inc. | Saint Laurent | CANADA |
| Fudan University | Shanghai | CHINA |
| Fuji Electric Power Service Co., Ltd. | Kawasaki-city | JAPAN |
| Fujian EPDRI | Fuzhou City | CHINA |
| Fujian Yongfu Project Consultants Co Ltd | Fuzhou | CHINA |
| Furnas Centrais Eletricas S.A. | Rio de Janeiro | BRAZIL |
| Future Grid Connect Consulting Pty Ltd | Claremont | AUSTRALIA |
| Gama Power Systems Inc. | Ankara | TURKEY |
| Gamesa | Zamudia | SPAIN |
| Garland Power & Light | Nevada | USA |
| Gas Energy, Inc. | Brooklyn | USA |
| Gas Natural | Madrid | SPAIN |
| Gas Natural Informatica, S.A. | Barcelona | SPAIN |
| Gassnova SF | Porsgrunn | NORWAY |
| Gaz de France | Saint-Denis La Plaine | FRANCE |
| Gaz de France | Paris | FRANCE |
| Gaz de France | Gennevilliers | FRANCE |
| Gazi Universitesi Muhendislik | Maltepe | TURKEY |
| Gazi Universitesi Rektorlugu | Ankara | TURKEY |
| GDF Suez (China) Energy Technology Co. Ltd. | Beijing | CHINA |
| GDF SUEZ Energie Nederland N. V. | Lelystad | THE NETHERLANDS |
| GDF SUEZ Produzione SpA | Rome | ITALY |
| GEA Consulenti Associati | Milan | ITALY |
| GEA EGI Contracting/Engineering Co. Ltd. | Budapest | HUNGARY |
| GEA Energy System India Ltd | Chennai | INDIA |
| GEB Rotterdam | Rotterdam | THE NETHERLANDS |
| GEC Alsthom Power Plants Ltd. | Manchester | UNITED KINGDOM |
| Gemma Power Systems, LLC | Glastonbury | USA |
| Genel Sistem Dizayani A.S. | Istanbul | TURKEY |
| Generation & Networks LLC | Moscow | RUSSIA |
| Generation Technology Research Pty. | Mulgrave | AUSTRALIA |
| Generation Ventures Associates | Brockton | USA |
| Genesis Oil & Gas Consultants Ltd. | London | UNITED KINGDOM |
| Genivar Inc. | Thunder Bay | CANADA |
| GenPower Services | Newton | USA |
| Genting Sanyen Power Sdn Bhd | Banting | MALAYSIA |
| Geodynamics Limited | Brisbane | AUSTRALIA |
| Geoenergie Bayern GmbH | Regensburg | GERMANY |
| Georgia Power Co. | Atlanta | USA |
| Georgia Southern University | Statesboro | USA |
| Georgia-Pacific Corporation | Atlanta | USA |
| Geothermal Energy Research and Development Group | Tokyo | JAPAN |
| GETEC Heat & Power GmbH | Magdeburg | GERMANY |
| GEW Werke Koln AG, Abt. KPP | Koln | GERMANY |
| GHD - Black & Veatch Pty Ltd | Perth | AUSTRALIA |
| GHD Ltd. | Newcastle-upon-Tyne | UNITED KINGDOM |
| GHENOVA | Seville | SPAIN |
| Ghesa Ingenieria | Madrid | SPAIN |
| Giannotti Associates | Bellport | USA |
| Global Gateways SL | Marbella | SPAIN |
| Global Power Synergy Public Company Limited - GPSC | Bangkok | THAILAND |
| Glotec Engineering Co. Ltd. | Seoul | SOUTH KOREA |
| GNPower Kauswagan Ltd. Co. | Lanao del Norte | THE PHILIPPINES |
| Golder Associates Inc | Manchester | USA |
| Green Star BCS | Orange | USA |
| GreenYellow | Paris | FRANCE |
| Grupo Tamoin S.A. | Viscaya | SPAIN |
| GS Engineering & Construction | Seoul | SOUTH KOREA |
| GS Engineering & Construction - Research Institute | Yongin-si | SOUTH KOREA |
| GT ICE LLC | Ponte Vedra Beach | USA |
| Gturbine | Pearland | USA |
| Guodian Science and Technology Research Institute | Nanjing | CHINA |
| HABAS A.S. | Istanbul | TURKEY |
| HABO b.v. | Ter Aar | THE NETHERLANDS |
| Haldor Topsoe A/S | Lyngby | DENMARK |
| Halla Engineering & Heavy Industries Ltd. | Seoul | SOUTH KOREA |
| Halliburton NUS | Idaho Falls | USA |
| HAMEK | La Molina-Lima | PERU |
| Hansol EME Co. Ltd. | Seongnam-si | SOUTH KOREA |
| Hanwha Engineering & Construction | Seoul | SOUTH KOREA |
| Hanwha Impact | Seoul | SOUTH KOREA |
| Harbin Engineering University | Harbin | CHINA |
| Harbin Industry University | Harbin | CHINA |
| Harbin Marine Boiler & Turbine Research Institute | Harbin | CHINA |
| Harc Research | The Woodlands | USA |
| Harris Group, Inc. | Denver | USA |
| HaskoningDHV Nederland B.V. | Rotterdam | THE NETHERLANDS |
| Hatch | Oakville | CANADA |
| Hatch | Perth | AUSTRALIA |
| Hatch Acres Optima | Calgary | CANADA |
| Hatch Associates | Mississauga | CANADA |
| HD Korea Shipbuilding & Offshore Engineering | Gyeonggi-do | SOUTH KOREA |
| HDR | Omaha | USA |
| HDR | Minneapolis | USA |
| HDR/Cummins & Barnard | Ann Arbor | USA |
| Headwaters CTL LLC | Hamilton | USA |
| Hebei Electric Power Design & Research Institute | Shijiazhuang | CHINA |
| Helius Energy plc | London | UNITED KINGDOM |
| Henan Electric Power & Design Institute | Zhenghou | CHINA |
| HEP - Hrvatska Elektroprivreda d.d. | Zagreb | CROATIA |
| HERA SpA | Prato | ITALY |
| Heron Thermoelectric S. A. | Athens | GREECE |
| Heurtey Petrochem. Engrg. | Montreuil | FRANCE |
| Hexperta | Gliwice | POLAND |
| Heymo Ingenieria | Madrid | SPAIN |
| Hidrocantabrico | Soto de Ribera | SPAIN |
| Hidroelectrica del Cantabrico | Gijon | SPAIN |
| Hidroelectrica del Cantabrico, S.A. | Oviedo | SPAIN |
| Hidrosolar Sociedad Anonima de Capital Variable | San Pedro Dula | HONDURAS |
| Hino Gas Sales Incorporated | Harlington | USA |
| Hitachi Engineering Co., Ltd. | Hitachi | JAPAN |
| Hitachi Ltd. | Chiyoda | JAPAN |
| Hitachi Ltd. | Hitachi-shi | JAPAN |
| Hitachi Ltd. | Tokyo | JAPAN |
| Hitachi Power Europe GmbH | Duisburg | GERMANY |
| Hitachi Power Systems America Ltd. | Basking Ridge | USA |
| Hitachi Zosen Corporation | Osaka | JAPAN |
| HMV Ingenieros Ltda | Bogota | COLOMBIA |
| HOCHTIEF / IKS | Frankfurt | GERMANY |
| Hokkaido Electric Power Company | Hokkaido | JAPAN |
| Holcim Group Support Ltd. | Holderbank | SWITZERLAND |
| Holyoke Gas & Electric Dept. | Holyoke | USA |
| Horizon Power | Bentley | AUSTRALIA |
| HPI-LLC | Houston | USA |
| HRL - Herman Research Pty Ltd. | Mulgrave | AUSTRALIA |
| HSM Power Engineering | Seongnam-si | SOUTH KOREA |
| Huadian Electric Power Research Institute | Hangzhou | CHINA |
| Huadian EPRI | Hangzhou | CHINA |
| Huadian EPRI Beijing Branch | Beijing | CHINA |
| Huadian GE Aero Gas Turbine Equipment Co. Ltd. | Shanghai | CHINA |
| Hualu Engineering & Technology Co. Ltd. | Xi'an | CHINA |
| Huaneng Clean Energy Research Institute | Beijing | CHINA |
| Human & Technologies Corp - H&TC | Seoul | SOUTH KOREA |
| Husky Oil Operations | Calgary | CANADA |
| Hydra Co Enterprises & Operations | Dearborn | USA |
| Hydro Quebec | Montreal | CANADA |
| Hydro Quebec International | Montreal | CANADA |
| Hydro Technology & Projects | Brussels | BELGIUM |
| Hydrogen Energy International Ltd. | Weybridge | UNITED KINGDOM |
| Hyundai Engineering & Construction - R&D Division | Yongin-si | SOUTH KOREA |
| Hyundai Engineering & Construction Co. Ltd. | Seoul | SOUTH KOREA |
| Hyundai Engineering Co. Ltd. | Seoul | SOUTH KOREA |
| Hyundai Heavy Industries Co. Ltd | Dong-gu, Ulsan | SOUTH KOREA |
| Hyundai Heavy Industry Power Systems | Ulsan | SOUTH KOREA |
| IBC Turbo, Inc. | The Woodlands | USA |
| IBE Consulting Engineers | Ljubljana | SLOVENIA |
| IBERDROLA | Castellon | SPAIN |
| Iberdrola Cogeneration, SRLU | Madrid | SPAIN |
| Iberdrola Empreendimentos do Brasil Ltda. | Rio de Janeiro | BRAZIL |
| Iberdrola Energia Monterrey, S.A. de C.V. | San Pedro Garza Garcia | MEXICO |
| Iberdrola Ingenieria y Construccion Mexico | Col Veronica | MEXICO |
| Iberdrola Ingenieria y Construccion S. A. | Bilbao | SPAIN |
| Iberdrola Ingenieria y Construccion S.A. | Madrid | SPAIN |
| Iberdrola Renewables | Portland | USA |
| Iberdrola Renivables | Madrid | SPAIN |
| IBERESE, S. A. U. | Erandio | SPAIN |
| Iberinco Mexico | Col.Veronica Anzures | MEXICO |
| ICA Fluor Daniel | Mexico | MEXICO |
| Idaho National Laboratory | Idaho Falls | USA |
| Idaho Power | Boise | USA |
| IDEX | Boulogne-Billancourt | FRANCE |
| IDOM | Bilbao | SPAIN |
| IDOM | Madrid | SPAIN |
| IEK | Berlin | GERMANY |
| IES Energy Solutions, Ltd. | Moscow | RUSSIA |
| IES Industries Inc. | Cedar Rapids | USA |
| IGNIS | Madrid | SPAIN |
| IHI-Ishikawajima-Harima Heavy Industries Co. Ltd | Tokyo | JAPAN |
| IKERLAN-ENERGIA | Minano (Alava) | SPAIN |
| IKN GmbH | Neustadt | GERMANY |
| IMASA Energia | Oviedo | SPAIN |
| IMASA Ingenieria Y Proyectos, S.A. | Madrid | SPAIN |
| Imatran Voima OY | Vantaa | FINLAND |
| Imperial College London | London | UNITED KINGDOM |
| Imperial Oil | Calgary | CANADA |
| Incico S.p.A. | Sesto San Giovanni | ITALY |
| Indeck Energy Services, Inc. | Buffalo Grove | USA |
| Indeck Energy Services, Inc. | Wheeling | USA |
| India Power Partners | New Delhi | INDIA |
| Industrial Engineering Consultancy Pty. Ltd. | Baulkham Hills | AUSTRALIA |
| Industrial Technology Research Institute - ITRI | Chutung | TAIWAN |
| Industry & Energy Associates | Portland | USA |
| Industry & Energy Association | Fort Mill | USA |
| INEA Institute Jozef Stefan | Liubljanska | SLOVENIA |
| Inelectra | Monterrey | MEXICO |
| Inelectra Inc | Caracas | VENEZUELA |
| Inelectra Panama SA | Ciudad de Panama | PANAMA |
| INFOTEC | Mexico D.F. | MEXICO |
| Ingelectric-Team, S.A. | Zamudio | SPAIN |
| INGENTRA DESSAU - SOPRIN | Santiago | CHILE |
| Ingeteam Power Plants S. A. | Vitoria-Gasteiz | SPAIN |
| INHA University | Inchon | SOUTH KOREA |
| Initec | Madrid | SPAIN |
| INITEC-Westinghouse | Madrid | SPAIN |
| Inner Mongolia Electric Power Survey & Design Institute Co., Ltd. | Hothot City | CHINA |
| INNERGEX | Longueuil | CANADA |
| Innogy - Cogen | Solihull | UNITED KINGDOM |
| INNOSPIN AG | Wettingen | SWITZERLAND |
| Innovative Steam Technologies | Cambridge | CANADA |
| Innovative Steam Technologies | Den Haag | THE NETHERLANDS |
| Innovative Steam Technologies | San Diego | USA |
| Innowatio Tecnologie | Bergamo | ITALY |
| Instalprojectos | Lisbon | PORTUGAL |
| Institut fuer Energetik und Umwelt | Leipzig | GERMANY |
| Institute of Energy | Hanoi | VIETNAM |
| Institute of Nuclear and New Energy Technology | Beijing | CHINA |
| Institute of Nuclear Energy Research | Lungtan | TAIWAN |
| Institute of Power Engineering | Warsaw | POLAND |
| Instituto de Ingenieria | Delegacion Coyoaca | MEXICO |
| Instituto de Investigaciones Electricas | Cuernavaca | MEXICO |
| Instituto Mexicano del Petroleo | Mexico City | MEXICO |
| Instituto Politecnico Nacional | Col. Lindavista | MEXICO |
| Instituto Superior de Energia (ISE) | Madrid | SPAIN |
| Instituto Superior Tecnico | Lisboa | PORTUGAL |
| Intech Engineering Corp. | Marlton | USA |
| Integral Power LLC | Cypress | USA |
| Integral S.A. | Medellin | COLOMBIA |
| Inter Coast Energy Co. | Davenport | USA |
| INTER Rao Engineering LLC | Moscow | RUSSIA |
| Intercontinental Development & Engineering | Chennai | INDIA |
| InterGen North America | Houston | USA |
| InterGen Services, Inc. | Burlington | USA |
| International Company for Water & Power (ACWA) | Riyadh | SAUDI ARABIA |
| International Company for Water & Power Projects | Dubai | UNITED ARAB EMIRATES |
| International Power Company Ltd. | Accra | GHANA |
| International Power plc | Swindon | UNITED KINGDOM |
| Intertechne Consultores S.A. | Curitiba | BRAZIL |
| Inti Karya Persada Tehnik PT (IKPT) | Jakarta | INDONESIA |
| INVAP S.E. | Bariloche | ARGENTINA |
| INVELT SERVIS, s.r.o | Praha/Prague | CZECH REPUBLIC |
| Invenergy LLC | Chicago | USA |
| Invensys Process Systems | Carlsbad | USA |
| Investigacion Desarrollo E Innovacion Energetica | Madrid | SPAIN |
| Invista (Canada) Company | Maitland | CANADA |
| Isagen S.A. "E.S.P." | Medellin | BRAZIL |
| ISGEC John Thompson | Chennai | INDIA |
| Islanta OU | Tallinn | COLOMBIA |
| ISOLUX Corsan | Madrid | SPAIN |
| ISPE - Institute of Power Studies and Design | Bucharest | ROMANIA |
| ISPE - Institute of Power Studies and Design | Timisoara | ROMANIA |
| Israel Electric Corp. Ltd. | Haifa | ISRAEL |
| Istroenergo International, a.s. | Levice | SLOVAKIA |
| Istroenergo, a.s. | Levice | SLOVAKIA |
| ITA – Instituto Tecnológico de Aeronáutica | Sao Paulo | BRAZIL |
| Itajuba Federal School of Mechanical Engineering | Itajuba, MG | BRAZIL |
| Itherm Conseil | Gennevilliers | FRANCE |
| ITOCHU Corporation | Sydney | AUSTRALIA |
| Ivanovo State Power University | Ivanovo | RUSSIA |
| K & M Engineering & Consulting Corp. | McLean | USA |
| Kablitz | Lauda-Koenigshofen | GERMANY |
| Kairos Power LLC | Oakland | USA |
| Kamine Development Corp. | Bedminster | USA |
| Kansai Electric Power Co. - KEPCO | Kita-Ku | JAPAN |
| Kansas City Power & Light | Kansas City | USA |
| KAPL Inc. | Schenectady | USA |
| Kawajyu Shoji Co., Ltd. | Tokyo | JAPAN |
| Kawasaki Gas Turbine Europe GmbH | Bad Homburg | GERMANY |
| Kawasaki Heavy Industries Management (Shanghai), Ltd. | Shanghai | CHINA |
| Kawasaki Heavy Industries, Ltd. | Akashi City | JAPAN |
| Kawasaki Heavy Industries, Ltd. | Kobe | JAPAN |
| Kawasaki Heavy Industries, Ltd. | Tokyo | JAPAN |
| Kawasaki Plant Systems | Kobe | JAPAN |
| Kaxu CSP O&M Company (Pty) Ltd. | Cape Town | SOUTH AFRICA |
| Kellenbenz Consulting LLC | Houston | USA |
| Kellog Brown & Root | Houston | USA |
| Kellog Brown & Root Asia Pacific Pte Ltd (KBR) | Singapore | SINGAPORE |
| Kema Nederland b.v. | Arnhem | THE NETHERLANDS |
| KEPCO KPS | Naju-si | SOUTH KOREA |
| Keppel Seghers Engineering Singapore Pte Ltd | Singapore | SINGAPORE |
| Keppel Seghers Hong Kong Limited | Hong Kong | CHINA |
| KES Fuels, Inc. | Meriden | USA |
| Kevin Anderson, Eng. | Houston | USA |
| Khalifa University | Abu Dhabi | UNITED ARAB EMIRATES |
| Kharafi National KSC | Safat | KUWAIT |
| Kielce University of Technology | Kielce | POLAND |
| Kiewit Power engineers | Lenexa | USA |
| Kinectrics Inc. | Toronto | CANADA |
| King Abdul Aziz University | Jeddah | SAUDI ARABIA |
| King Abdullah City for Atomic & Renewable Energy | Riyadh | SAUDI ARABIA |
| King Fahd University of Petroleum & Minerals | Dhahran | SAUDI ARABIA |
| King Mongkut's Institute of Technology | Bangkok | THAILAND |
| King Saud University | Riyadh | SAUDI ARABIA |
| Klaipeda University | Klaipeda | LITHUANIA |
| Koch Engineering & Construcion | Lisbon | PORTUGAL |
| KOCH Transporttechnik GmbH | Wadgassen | GERMANY |
| KOGAS | Incheon | SOUTH KOREA |
| Kohlbach Holding GmbH | Wolfsberg | AUSTRIA |
| Korea District Heating Company (KDHC) | Seoul | SOUTH KOREA |
| Korea District Heating Corporation (KDHC) | Sungnam-shi | SOUTH KOREA |
| Korea District Heating Engineering Co. Ltd (KDHEC) | Seongnam City | SOUTH KOREA |
| Korea Electric Power Corporation (KEPCO) | Seoul | SOUTH KOREA |
| Korea Electric Power Research Institute (KEPRI) | Yusung-Ku | SOUTH KOREA |
| Korea Energy Management Corporation (KEMCO) | Gyeonggi | SOUTH KOREA |
| Korea Institute of Aeronautical Technology | Seoul | SOUTH KOREA |
| Korea Institute of Energy Research | Daejeon | SOUTH KOREA |
| Korea Institute of Energy Research | Yusong-Gu | SOUTH KOREA |
| Korea Institute of Industrial Technology (KITECH) | Cheonan-si | SOUTH KOREA |
| Korea Institute of Machinery & Materials | Taejon | SOUTH KOREA |
| Korea Power Engineering Co. (KOPEC) | Yongin-si | SOUTH KOREA |
| Korea South-East Power Company | Seoul | SOUTH KOREA |
| K-PEC | Seoul | SOUTH KOREA |
| K-Power Co. Ltd. | Gwangyang-Si | SOUTH KOREA |
| Kraftanlagen Argentina S.A. | Buenos Aires | ARGENTINA |
| Kraftanlagen Muenchen GmbH | Munich | GERMANY |
| Kraftszer Budapest Ltd. | Budapest | HUNGARY |
| KTA Tenaga Sdn. Bhd. | Petaling Jaya | MALAYSIA |
| Kuettner Energy GmbH | Essen | GERMANY |
| Kuljian Corporation | Philadelphia | USA |
| KUMHO Petrochemical | Daejeon | SOUTH KOREA |
| Kunhwa Engineering Company | Seoul | SOUTH KOREA |
| Kvaerner Masa-Yards | Turku | FINLAND |
| Kyushu Electric Power Co. Inc. | Fukuoka | JAPAN |
| L G & E Energy Services Co. | Louisville | USA |
| L G & E Power Systems, Inc. | Fairfax | USA |
| L G & E Power Systems, Inc. | Irvine | USA |
| La Salle University | Col. Condesa | MEXICO |
| Lahmeyer International (India) Pvt. Ltd. | Gurgaon | INDIA |
| Lahmeyer International GmbH | Bad Vilbel | GERMANY |
| LAMBDA - Gesellschaft fuer Gastechnik mbH | Herten | GERMANY |
| Lambert Engineers | Knoxville | USA |
| Lancaster Steel Co. Inc. | Boca Raton | USA |
| Lanco International Pte. Ltd. | Singapore | SINGAPORE |
| Lansing Board of Water & Light | Lansing | USA |
| Larsen & Toubro Ltd. | Mumbai | INDIA |
| Larsen & Toubro Ltd. | Vadodara | INDIA |
| Larson Engineering Inc. | Norcross | USA |
| Last Energy | Washington | USA |
| Lauren Engineers & Contructors | Abilene | USA |
| LAWI Engineering GmbH | Dresden | GERMANY |
| LE Energy Ltd. | Edinburgh | UNITED KINGDOM |
| Leigh Creek Energy Limited | Adelaide | AUSTRALIA |
| Leighton Contractors Pty. Ltd. | Sydney | AUSTRALIA |
| LEME Engenharia | Rio de Janeiro | BRAZIL |
| Leonardo Technologies Inc. | Sewickley | USA |
| Leroux & Lotz Technologies | Eybens | FRANCE |
| LERSOY Enerji Ltd. | Kadikoy | TURKEY |
| Lesedi Nuclear Services (Pty) Ltd. | Cape Town | SOUTH AFRICA |
| Leucadia International Corporation | New York | USA |
| LG Engineering & Construction Corp. | Seoul | SOUTH KOREA |
| Liburdi Engineering Limited | Dundas | CANADA |
| Light Ridge Resources, LLC. | Houston | USA |
| Linc Energy | Brisbane | AUSTRALIA |
| Linde AG | Hoellriegelskreut | GERMANY |
| Linea Energia SpA | Rovato | ITALY |
| Linerji Istanbul | Istanbul | TURKEY |
| Litwin SA | Rueil Malmaison | FRANCE |
| LLC "Russian Gas Turbines" | Moscow | RUSSIA |
| Lloyds Register International Power Group | Swindon | UNITED KINGDOM |
| LMS Tech | Central | HONG KONG |
| Lockheed Martin | Moorestown | USA |
| Lockwood, Andrews & Newnam, Inc. | Houston | USA |
| Lointek | Urduliz | SPAIN |
| Lombardia Risorse S.p.A. | Milano | ITALY |
| Los Alamos National Laboratory | Los Alamos | USA |
| Los Angeles County Sanitation District | Whittier | USA |
| Lotte Engineering | Seoul | SOUTH KOREA |
| Lower Colorado River Authority (Ferguson Plant) | Horseshoe Bay | USA |
| Lower Colorado River Authority (GOC) | Austin | USA |
| LTL Global Engineering Services Pvt. Ltd. | Colombo | SRI LANKA |
| Lucite International UK Ltd. | Cleveland | UNITED KINGDOM |
| Lumenion GbmH | Berlin | GERMANY |
| Luna Labs | Charlottesville | USA |
| LURGI - SES s.r.o. | Tlmace | SLOVAK REPUBLIC |
| Lynemouth Power Ltd. | Ashington | UNITED KINGDOM |
| M.N. Dastur and Company (P) Ltd. | Chennai | INDIA |
| M.W. Kellogg Ltd. | Greenford | UNITED KINGDOM |
| M+W Germany GmbH | Stuttgart | GERMANY |
| MACCHI SPA | Fagnano Olona | ITALY |
| Mach10 | Maassluis | THE NETHERLANDS |
| Macquinaria Igsa | Mexico D.F. | MEXICO |
| Maguire Group, Inc. | Foxboro | USA |
| Maine Public Service Co. | Presque Isle | USA |
| Maintain Power Pty Ltd | Ultimo | AUSTRALIA |
| MAITREA | Plougastel-Daoulas | FRANCE |
| Malden Mills Industries, Inc. | Lawrence | USA |
| MAN Energy Solutions SE | Augsburg | GERMANY |
| MAN Ferrostaal Power Industry GmbH | Essen | GERMANY |
| MAN Turbomaschinen AG | Oberhausen | GERMANY |
| Management Co. "Planning & Analysis Center" LLC | Moscow | RUSSIA |
| Mankin Energy Services Ltd. | Leeds | UNITED KINGDOM |
| Manweb plc | Chester | UNITED KINGDOM |
| Marathon Power Co. Ltd. | Houston | USA |
| March Point Cogeneration Company | Anacortes | USA |
| Maritime Electric | Charlottetown | CANADA |
| Marmara Universitesi Bilimsel Arastima Projeleri | Istanbul | TURKEY |
| Marubeni Asian Power Singapore Pte Ltd. | Singapore | SINGAPORE |
| Marubeni Power Asset Management Limited | Hong Kong | CHINA |
| Marubeni Sustainable Energy, Inc. | San Diego | USA |
| Masdar Institute of Science & Technology | Abu Dhabi | UNITED ARAB EMIRATES |
| Mass. Water Resources Authority | Boston | USA |
| Mass. Water Resources Authority | Winthrop | USA |
| Massachusetts Institute of Technology | Cambridge | USA |
| Masspower | Indian Orchard | USA |
| Matuz Hungarian Combustion Ltd. | Budapest | HUNGARY |
| Maulbetsch Consulting | Atherton | USA |
| Maven Power | Spring | USA |
| Maxim Power Corp. | Calgary | CANADA |
| McBurney Corp. | Norcross | USA |
| McLellan & Partners Ltd. | W. Blyfleet | UNITED KINGDOM |
| MCNIC Power | Houston | USA |
| MDC Technology | Middlesbrough | UNITED KINGDOM |
| Mead Corp. | Miamisburg | USA |
| Mecanica de La Pena S.A. | Urduliz | SPAIN |
| Mechanical Dynamics & Analysis - MDA | Latham | USA |
| Mecon Limited | Ranchi | INDIA |
| Mediation Resolution International LLC | West Hartford | USA |
| Mee Industries Inc. | Irwindale | USA |
| Mee Industries Inc. | Sugarland | USA |
| MEG International | Montreal | CANADA |
| MEGA Limburg | Maastricht | THE NETHERLANDS |
| Meir Somekh Consultant | Hamerkaz | ISRAEL |
| Meralco PowerGen Corporation | Pasig | THE PHILIPPINES |
| Merchant Energy Group of the Americas, Inc. | Annapolis | USA |
| Merck & Co., Inc. | West Point | USA |
| Mercurio 200 S.R.L. | Verbania | ITALY |
| Mercury Energy Ltd. | Auckland | NEW ZEALAND |
| Merrick & Co. | Albuquerque | USA |
| Merrick & Co. | Aurora | USA |
| Merrick & Co. | Greenwood Village | USA |
| Merrimac Associates | Philadelphia | USA |
| Mesa Associates, Inc. | Knoxville | USA |
| Metal Constructions of Greece S. A.(METKA) | N. Iraklio | GREECE |
| MET-MEX PENOLES, S.A. de C.V. | Torreon | MEXICO |
| Metrostav | Prague | CZECH REPUBLIC |
| MexTICa, S.A. de C.V. | Mexico | MEXICO |
| MG Consultants | Tulsa | USA |
| MGM Engineering & Contracting Srl | Milano | ITALY |
| MGT Power | London | UNITED KINGDOM |
| MHI Engineering Vienna GmbH | Vienna | AUSTRIA |
| MHPS | Dubai | UAE |
| Michael Schaal Energy Consultant | Kiryat Bialik | ISRAEL |
| Michcon | Detroit | USA |
| MidAmerican Energy | Urbandale | USA |
| MidCon Development | Lombard | USA |
| Middough | Oak Brook | USA |
| Miller Brewing Company | Milwaukee | USA |
| Minconsult Sdn Bhd | Petaling Jaya | MALAYSIA |
| Ministry of Electricity & Water | Manama | BAHRAIN |
| Ministry of Electricity & Water | South Surra | KUWAIT |
| Minnesota Power | Duluth | USA |
| Minnesota Power | Cohasset | USA |
| Mirant Corporation | Atlanta | USA |
| Mirastar Energy Inc. | New Westminster | CANADA |
| Mission Energy Asia Pte. Ltd. | Singapore | SINGAPORE |
| Mitsubishi Heavy Industries America | Orlando | USA |
| Mitsubishi Heavy Industries Ltd. | Takasago City | JAPAN |
| Mitsubishi Heavy Industries Ltd. | Yokohama | JAPAN |
| Mitsubishi Hitachi Power Systems (China) Co. | Beijing | CHINA |
| Mitsubishi Hitachi Power Systems India Ltd. | Bangalore | INDIA |
| Mitsubishi Hitachi Power Systems Ltd. | Yokohama-shi | JAPAN |
| Mitsubishi Power | New Cairo | EGYPT |
| Mitsubishi Power Asia Pacific Pte. Ltd. | Singapore | SINGAPORE |
| Mitsubishi Power Systems | Lake Mary | USA |
| Mitsui & Co. Ltd. | Chiyoda | JAPAN |
| Mitsui Engineering & Shipbuilding Co., Ltd. | Tokyo | JAPAN |
| MMR Power Solutions LLC | Baton Rouge | USA |
| Mobil Producing Nigeria Unlimited | Lagos | NIGERIA |
| Mobil Technology Co. | Paulsboro | USA |
| Mobil Technology Company | Dallas | USA |
| Modec | Singapore | SINGAPORE |
| MODEC International Inc. | Houston | USA |
| MODELPOL Ltd. | Warsaw | POLAND |
| MOL Hungarian Oil & Gas Co. | Kardoskut | HUNGARY |
| Monash University | Melbourne | AUSTRALIA |
| Moncada Costruzioni S.r.l. | Agrigento | ITALY |
| Mondi Steti a.s. | Steti | CZECH REPUBLIC |
| Monsanto Enviro-Chem | St. Louis | USA |
| Montec Associates | Winchester | USA |
| Moroccan Agency for Solar Energy (MASEN) | Rabat | MOROCCO |
| Moscow Power Engineering Institute | Moscow | RUSSIA |
| Mott MacDonald | Croydon | UNITED KINGDOM |
| Mott MacDonald Ltd. | Broomielaw | UNITED KINGDOM |
| Mott MacDonald Ltd. | Brighton | UNITED KINGDOM |
| Mott MacDonald Pvt Ltd | Noida | INDIA |
| Mountain Energy, Inc. | Colchester | USA |
| Mowlem Engineering | Bromborough | UNITED KINGDOM |
| MP Power Projects | Bundaberg | AUSTRALIA |
| MP2 Energy | The Woodlands | USA |
| MPR Associates | Alexandria | USA |
| MPX Energia S.A. | Rio de Janeiro | BRAZIL |
| MRW Mexicana, S.A. de C.V. | Mexico City | MEXICO |
| M-Tech Industrial (PTY) Ltd. | Potchefstroom | SOUTH AFRICA |
| MTU Aero Engines GmbH | Munchen | GERMANY |
| MTU Maintenance Berlin-Brandenburg GmbH | Ludwigsfelde | GERMANY |
| Mubadala Development Company | Abu Dhabi | UNITED ARAB EMIRATES |
| Multicon Kft. | Budapest | HUNGARY |
| MVM ERBE Engineering Zrt. | Budapest | HUNGARY |
| MVV IndustriekraftwerkLudwigshafen GmbH | Ludwigshafen | GERMANY |
| MVV Umwelt GmbH | Mannheim | GERMANY |
| MVV Umwelt O & M GmbH | Mannheim | GERMANY |
| MWH New Zealand Ltd. | Dunedin | NEW ZEALAND |
| Myno Carbon Corporation | Spokane Valley | USA |
| Naldeo | Marseille | FRANCE |
| Naldeo | Nantes | FRANCE |
| Naldeo | Lyon | FRANCE |
| Narae Energy Services | Seoul | SOUTH KOREA |
| National Contracting Co. Ltd. | Al-Khobar | SAUDI ARABIA |
| National Energy Services Ltd. | Balzac | CANADA |
| National Fuel | Buffalo | USA |
| National Institute of Clean-and-Low Carbon Energy (NICE) | Beijing | CHINA |
| National Institute of Standards and Technology | Gaithersburg | USA |
| National Power International Ltd. | Abu Dubai | UNITED ARAB EMIRATES |
| National Power plc | Selby | UNITED KINGDOM |
| National Power plc | London | UNITED KINGDOM |
| National Power plc | Clwyd | UNITED KINGDOM |
| National Power plc / Trigonos | Swindon | UNITED KINGDOM |
| National Renewable Energy Lab | Golden | USA |
| National Sun Yat-Sen University | Kaohsiung | TAIWAN |
| National Technical University of Athens | Athens | GREECE |
| National University of Ireland Galway | Dublin | IRELAND |
| National University of Singapore | Singapore | SINGAPORE |
| National Yunlin University of Science &Technology | Touliu | TAIWAN |
| Nation's Energy | Chicago | USA |
| Natural Gas Technologies Centre | Boucherville | CANADA |
| Natural Resources Canada | Varennes | CANADA |
| Natural Resources Canada | Ottawa | CANADA |
| Naturkraft | Lysaker | NORWAY |
| Naval Facilities Engrg Service Center | Port Hueneme | USA |
| Navantia S.L. | Madrid | SPAIN |
| Navigant Consulting, Inc. | Rancho Cordova | USA |
| NC Electric Membership Corp. | Raleigh | USA |
| Negev Energy | Airport City | ISRAEL |
| Neill & Gunter Ltd. | Fredericton | CANADA |
| Nelson Consulting | Bethel Park | USA |
| NEM B.V. | Leiden | THE NETHERLANDS |
| NEPCO | Erie | USA |
| NEPDI | Changchun | CHINA |
| Neste Jacobs AB Abu Dhabi | Abu Dhabi | UNITED ARAB EMIRATES |
| Neste Oy | Porvoo | FINLAND |
| Nestec S. A. | Vevey | SWITZERLAND |
| NEST-EFEI | Itajuba | BRAZIL |
| Nestle Brands Potato Division | Moses Lake | USA |
| New England Electric | Westborough | USA |
| New Mexico State University | Las Crues | USA |
| New York Power Authority | White Plains | USA |
| newcleo Ltd. | Torino | ITALY |
| Newfoundland Power | Saint John's | CANADA |
| Newmont Mining Corporation | Denver | USA |
| Nexen | Calgary | CANADA |
| NG Metalurgica | Vila Rezende | BRAZIL |
| NICE America | Mountain View | USA |
| NIRAS | Aalborg | DENMARK |
| Nishinippon Plant Engineering & Construction | Fukuoka-City | JAPAN |
| Noblis Inc. | Falls Church | USA |
| Noell KRC Schkeuditz Wurtzburg | Schkeuditz | GERMANY |
| NOGA-Israel Independent System Operator Ltd. | Haifa | ISRAEL |
| Nomac Co., Ltd. | Dubai | UNITED ARAB EMIRATES |
| Nomac Gulf CSP Tower Energy L.L.C. | Dubai | UNITED ARAB EMIRATES |
| NOMAD Infrastructure, LLC | Indianapolis | USA |
| Nomine Consult OU | Tallinn | ESTONIA |
| Nooter/Eriksen Srl | Cardano Al Campo | ITALY |
| Nooter-Eriksen | Fenton | USA |
| NorAm Energy (MN) | Minneapolis | USA |
| Norconsult AS | Sandvika | NORWAY |
| NORESCO LLC | Westboro | USA |
| Norsk Energi | Skoyen | NORWAY |
| Norsk Hydro (UK) Ltd. | Twickenham | UNITED KINGDOM |
| Norsk Hydro Petroleum | Oslo | NORWAY |
| Norsk Hydro Produksjon | Oslo | NORWAY |
| North American Energy Services | Issaquah | USA |
| North American Energy Services | Lockport | USA |
| North Carolina A & T State University | Greensboro | USA |
| North China Electric Power Design Institute | Beijing | CHINA |
| North China Electric Power University | Beijing | CHINA |
| Northeast Generation Services Company | Rocky Hill | USA |
| Northeast Utilities | Hartford | USA |
| Northern California Power Agency - NCPA | Middletown | USA |
| Northern Electric | Newcastle-upon-Tyne | UNITED KINGDOM |
| Northern Monenco AGRA | Houston | USA |
| Northern Power Generation Company | Muzaffargarh | PAKISTAN |
| Northern States Power Co. | Minneapolis | USA |
| Northland Power | Toronto | CANADA |
| Northrop Grumman | Annapolis | USA |
| Northwest Electric Power Design Inst. | Xian | CHINA |
| Northwest Power Co. | Bellevue | USA |
| Norweb plc | Manchester | UNITED KINGDOM |
| Norwegian University of Science and Technology | Trondheim | NORWAY |
| NOVA Chemicals | Calgary | CANADA |
| NOVA Industries | Los Angeles | USA |
| Nova Scotia Power Inc. | Halifax | CANADA |
| Novatec Biosol AG | Karlsruhe | GERMANY |
| NRG Cabrillo Power Operations, Inc. | Carlsbad | USA |
| NRG Energy | Minneapolis | USA |
| NRG Energy Inc. | Houston | USA |
| NTCI, INC. | Golden | USA |
| Nuclear Electric plc | Gloucester | UNITED KINGDOM |
| Nuon Technisch Bedrijf nv | Duiven | THE NETHERLANDS |
| Nuovo Pignone | Firenze | ITALY |
| Pace Global Energy Services | Fairfax | USA |
| Pacific Engineers & Constructors Ltd. | Taipei | TAIWAN |
| Pacific Gas & Electric / San Francisco | San Francisco | USA |
| Pacificorp | Salt Lake City | USA |
| PalCom Systems Pty Ltd | Quorrobolong | AUSTRALIA |
| Pan American Energy | Chubut | ARGENTINA |
| Pan Gulf Energy | New York | USA |
| Panda Energy International Inc. | Dallas | USA |
| Panda Plastik | Istanbul | TURKEY |
| Parsons Brinckerhoff | Newcastle-upon-Tyne | UNITED KINGDOM |
| Parsons Brinckerhoff Africa (Pty) Ltd | Craighall | SOUTH AFRICA |
| Parsons Brinckerhoff Pte. Ltd. | Singapore | SINGAPORE |
| Parsons Brinkerhoff Australia | Brisbane | AUSTRALIA |
| Parsons Energy & Chemicals Group Inc. | Houston | USA |
| Parsons Energy and Chemicals Group Ltd. | Brentford | UNITED KINGDOM |
| Partec Ltd | Hindley | UNITED KINGDOM |
| Patch Services | Suisun City | USA |
| PB Power | Boston | USA |
| PB Power | San Francisco | USA |
| PB Power | New York | USA |
| PB Power | Manchester | UNITED KINGDOM |
| PB Power - Parsons Brinckerhoff Power | Abu Dhabi | UNITED ARAB EMIRATES |
| PB Power NZ Ltd. | Auckland | NEW ZEALAND |
| PB Power, Inc. | Houston | USA |
| PCL Industrial Construction Co. | Alpharetta | USA |
| PDEX | Johannesburg | SOUTH AFRICA |
| P-DICTOR | Bangkok | THAILAND |
| Peco Energy | Wayne | USA |
| Pemex Refinacion | Mexico City | MEXICO |
| Pennsylvania State University | University Park | USA |
| Pensotti PFCL S.p.A. | Legano | ITALY |
| Penspen Limited | RichmondUpon Thames | UNITED KINGDOM |
| Pepco Energy Services | Arlington | USA |
| Pery de Olivera Thury | Rio de Janeiro | BRAZIL |
| Peter Brotherhood Ltd. | Peterborough | UNITED KINGDOM |
| Peter Hervish, Eng. | Cape Canaveral | USA |
| Peter Johnman Pty Ltd | Noraville | AUSTRALIA |
| Petrobras | Rio de Janeiro | BRAZIL |
| Petrobras (Argentina) | Marcos Paz | ARGENTINA |
| Petrobras-Petroleo Brasileiro, SA | Rio de Janeiro | BRAZIL |
| Petrofac | Woking | UNITED KINGDOM |
| Petroil Energy Group | Madrid | SPAIN |
| Petroleos Mexicanos | Mexico | MEXICO |
| Pfizer, Inc. | Groton | USA |
| PG&E Generating | Bethesda | USA |
| PG&E Generating | Selkirk | USA |
| PG&E National Energy Group | Jacksonville | USA |
| PGE Gornictwo Energetyka Konwencjonalna SA | Warsaw | POLAND |
| PGE Polska Grupa Energetyczna SA | Warsaw | POLAND |
| PGESCO | Cairo | EGYPT |
| PIC Group | Marietta | USA |
| Pirelli Ambiente SpA | Milano | ITALY |
| PJSC Turboatom | Kharkhov | UKRAINE |
| PNEM n.v. | Hertogenbosch | THE NETHERLANDS |
| Pohang University of Science & Technology (POSTECH) | Pohang | SOUTH KOREA |
| Polimex Mostostal S.A. | Gliwice | POLAND |
| Polish Energy Partners | Warsaw | POLAND |
| Politecnico di Bari | Bari | ITALY |
| Politecnico di Milano | Milan | ITALY |
| Pontificia Universidade Catolica do Rio de Janeiro | Gavea | BRAZIL |
| Portland General Electric Co. | Portland | USA |
| Portugen Energia SA | Gondomar | PORTUGAL |
| Posco Energy | Incheon | SOUTH KOREA |
| POSCO Engineering & Construction | Yeonsu-Gu | SOUTH KOREA |
| POSCO Engineering & Construction Co., Ltd. | Incheon | SOUTH KOREA |
| POSCO Engineering & Construction Co., Ltd. | Kyongsangbuk-do | SOUTH KOREA |
| Power + Energy Associates Ltd. | Morpeth | UNITED KINGDOM |
| Power Engineering Consulting Joint Stock Co. 1 | Hanoi | VIETNAM |
| Power Engineering Consulting Joint Stock Co. 2 | Ho Chi Min | VIETNAM |
| Power Engineering Consulting Joint Stock Co. 4 | Nha Trang | VIETNAM |
| Power Engineering Srl | Varese | ITALY |
| Power Engineers | Burgess Hill | UNITED KINGDOM |
| Power Engineers Collaborative, LLC | Chicago | USA |
| Power Engineers Collaborative, LLC | Milwaukee | USA |
| POWER Engineers, Inc. | Meridian | USA |
| POWER Engineers, Inc. | Norcross | USA |
| POWER Engineers, Inc. | Duluth | USA |
| Power Generation Services (HK) Ltd. | Pokfulam | HONG KONG |
| Power Generation Systems Inc. | The Woodlands | USA |
| Power Link Corporation | Lake Oswego | USA |
| Power Management Group, Inc. | Greenville | USA |
| Power Research Institute | Taipei | TAIWAN |
| Power Services Associates, Inc. | Grayson | USA |
| Power Systems Engineering | Houston | USA |
| Power Team Consulting Ltd. | Calgary | CANADA |
| Power Technologies, Inc. | Schenectady | USA |
| Powerchina Hubei Electric Engineering Corp. (HBEEC) | Wuhan, Hubei | CHINA |
| Powerchina Northwest Engineering Company Limited | Xi'an | CHINA |
| PowerChina Sichuan Electric Power Eng. Co. Ltd. | Chengdu | CHINA |
| Powergen | Port of Spain | TRINIDAD AND TOBAGO |
| Powergen CHP ltd | Ravensthorpe | UNITED KINGDOM |
| PowerGen Engineering & Consulting, Inc. | Miramar | USA |
| Powergen plc | Coventry | UNITED KINGDOM |
| PowerPHASE LLC | West Palm Beach | USA |
| Powertec Engineering Pvt Ltd | Chennai | INDIA |
| Power-Tech Engineers, Inc. | Walnut | USA |
| Powertek Berhad | Kuala Lumpur | MALAYSIA |
| PowerTran, Inc. | Taipei | TAIWAN |
| Poyry Energy | Calgary | CANADA |
| Poyry Energy Inc. | Makati City | THE PHILIPPINES |
| Poyry Energy Ltd. | Al_Hamriya | OMAN |
| Poyry Energy Ltd. | Bangkok | THAILAND |
| Poyry Energy Ltd. | Horsham | UNITED KINGDOM |
| Poyry Energy Ltd. | Zurich | SWITZERLAND |
| Poyry Energy Srl | Genova | ITALY |
| Poyry Eroterv Zrt | Budapest | HUNGARY |
| Poyry Finland Oy | Vantaa | FINLAND |
| Poyry SAS | Saint Quentin | FRANCE |
| Poyry Swedpower AB | Stockholm | SWEDEN |
| Poyry Tecnologia Ltda | Sao Paulo | BRAZIL |
| PPG Industries | Lake Charles | USA |
| PPG Industries | New Martinsville | USA |
| PPL Generation | Allentown | USA |
| PPS Group LLC | Kansas City | USA |
| pQuadrum | Lugano | SWITZERLAND |
| Pratt & Whitney | East Hartford | USA |
| Pratt & Whitney Canada, Inc. | Longueuil | CANADA |
| Pratt & Whitney Power Systems | East Hartford | USA |
| Pratt & Whitney Rocketdyne | Canoga Park | USA |
| Praxair, Inc. | Tonawanda | USA |
| PRC, Inc. | Vincentown | USA |
| PRENCO Services, Inc. | Cherry Hill | USA |
| PricewaterhouseCoopers GmbH | Berlin | GERMANY |
| Princeton Energy Systems | Philadelphia | USA |
| Princeton Environmental Energy | Princeton | USA |
| Prior Industries Australia Pty., Ltd. | Brisbane | AUSTRALIA |
| Pristine Power Inc. | Calgary | CANADA |
| Process Troubleshooting LLC | Moultonborough | USA |
| Process Unlimited International Inc. | Pasadena | USA |
| ProEnergy Services | Houston | USA |
| ProEnergy Services | Sedalia | USA |
| Progress Energy | Raleigh | USA |
| Progress Energy Corp. | St. Petersburg | USA |
| Progress Energy Service Company, LLC | Raleigh | USA |
| Progressive Energy Ltd. | Stonehouse | UNITED KINGDOM |
| Projecto Detalhe Ltda | Sintra | PORTUGAL |
| Promon Engenharia | Sao Paulo | BRAZIL |
| Promon Engenharia Ltda. | Rio de Janeiro | BRAZIL |
| Protecma S.r.l. | Sesto San Giovanni | ITALY |
| Proto-Power Corp. | Groton | USA |
| Prvni brnenska strojima a.s. | Brno | CZECH REPUBLIC |
| PSE&G Co. | Maplewood | USA |
| PSEG POWER LLC | Newark | USA |
| PT Caltex | Bakersfield | USA |
| PT Caltex Pacific | Pekanbaru | INDONESIA |
| PT Indonesia Power | Grati | INDONESIA |
| PT Indonesia Power | Jakarta | INDONESIA |
| PT Lestari Banten Energi (LBE) | Banten | INDONESIA |
| PT PJB Services | East Java | INDONESIA |
| PT PJB UNITPJB ACADEMY | Surabaya | INDONESIA |
| PT PLN (Persero) Jasa Enjiniring | Jakarta | INDONESIA |
| PT PLN (Persero) Unit Induk Pembangkitan Tanjung Jati B. | Central Java | INDONESIA |
| PT PLN Enjiniring | Jakarta | INDONESIA |
| PT PLN Nusantara Power - Arun Power Plant | Lhokseumawe | INDONESIA |
| PT PLN Persero - CFSPP Timor-1 Power Plant | Kupang | INDONESIA |
| PT PLN Puslitbang | Jakarta | INDONESIA |
| PT Rekadaya Elektrika Consult | Jakarta | INDONESIA |
| PT Rekayasa Industri | Jakarta | INDONESIA |
| PT Sarana Maju Lestari | Jakarta | INDONESIA |
| PT Siemens Indonesia | Jakarta | INDONESIA |
| PT Tripatra Engineering & Construction | Jakarta | INDONESIA |
| PT Tripatra Multi Energi | Tangerang | INDONESIA |
| PTT Exploration and Production Public Company Limited | Bangkok | THAILAND |
| Public Service Company of Colorado | Denver | USA |
| Public Service Company of New Mexico | Albuquerque | USA |
| PUC Minas | Itajuba | BRAZIL |
| Purdue University | West Lafayette | USA |
| PYRAINE | Bordeaux | FRANCE |
| R.G. Vanderweil LLC | Long Beach | USA |
| R.T. Polaske Associates LLC | Kensington | USA |
| R.W. Beck & Associates | Framingham | USA |
| Radix Engenharia e Desenvolvimento de Software Ltda | Rio de Janeiro | BRAZIL |
| Radix US | Houston | USA |
| Rafako S.A. | Raciborz | POLAND |
| Raffineria di Milazzo S.C.p.A. | Milazzo | ITALY |
| Ramat Hovav Power Plant Limited Partnership | Neot Hovav | ISRAEL |
| RAMBOLL | Arhus | DENMARK |
| Ramboll | Newcastle Upon Tyne | UNITED KINGDOM |
| Ramboll | Esbjerg | DENMARK |
| Ramboll Danmark A/S | Virum | DENMARK |
| Ramboll Energy UK | Stokesley | UNITED KINGDOM |
| RCM Technologies | Oakland | USA |
| RCR Energy Systems | Melbourne | AUSTRALIA |
| Recycled Energy Development LLC | Westmont | USA |
| Reliable Plant Solutions GmbH | Schkeuditz | GERMANY |
| Reliance Energy Limited | Noida | INDIA |
| Reliance Energy Limited | Mumbai | INDIA |
| Reliance Industries Limited | Navi Mumbai | INDIA |
| Reliant Energy | Canonsburg | USA |
| Reliant Energy Solutions | Houston | USA |
| Renewable Energy Systems Americas | Austin | USA |
| Renewable Energy Systems Americas | Broomfield | USA |
| Rengen Energy Solutions | Mexico City | MEXICO |
| Rentech Inc. | Denver | USA |
| Repsol - YPF | Buenos Aires | ARGENTINA |
| REPSOL YPF, S.A. | Madrid | SPAIN |
| Research Institute of Industrial Science & Tech | Pohang City | SOUTH KOREA |
| Rezia Energia Italia S.p.A. | Milan | ITALY |
| RINA BRASIL SERVICOS TECNICOS LTDA | Rio de Janeiro | BRAZIL |
| Rinnovabili e Ambiente Srl | Busalla | ITALY |
| Rio Energy | Buenos Aires | ARGENTINA |
| RMA Fiventures Asia-Pacific Pte Ltd | Singapore | SINGAPORE |
| RMF Engineering, Inc. | Baltimore | USA |
| Roberts & Schaefer | Chicago | USA |
| Rockson Engineering Company Limited | Port Harcourt | NIGERIA |
| Rolls-Royce - Allen Steam Turbines | Bedford | UNITED KINGDOM |
| Rolls-Royce Brasil Ltda | Rio de Janeiro | BRAZIL |
| Rolls-Royce Canada | Dorval | CANADA |
| Rolls-Royce Commercial (Beijing) Co. | Beijing | CHINA |
| Rolls-Royce Energy Systems Inc. | St. Catharines | CANADA |
| Rolls-Royce Energy Systems Inc. | Mount Vernon | USA |
| Rolls-Royce Energy Systems Inc. | Houston | USA |
| Rolls-Royce Industrial Power Overseas Projects Ltd. | Abu Dhabi | UNITED ARAB EMIRATES |
| Rolls-Royce Industrial Power Systems | Newcastle-upon-Tyne | UNITED KINGDOM |
| Rolls-Royce Industrial Power Systems | Coventry | UNITED KINGDOM |
| Rolls-Royce Marine Systems | Filton | UNITED KINGDOM |
| Rolls-Royce Power Systems AG | Friedrichshafen | GERMANY |
| Rolls-Royce Power Ventures Ltd. | London | UNITED KINGDOM |
| Rolls-Royce Pte Limited | Singapore | SINGAPORE |
| Rolls-Royce Turkey | Istanbul | TURKEY |
| Ronesans Endustri Tesisleri Insaat Sanayi ve Ticaret A. S. | Istanbul | TURKEY |
| Rotec Consultancy | Peterlee | UNITED KINGDOM |
| Roulands Fabrikker | Odense | DENMARK |
| RovsingDynamics A/S | Skovlunde | DENMARK |
| Royal Institute of Technology | Stockholm | SWEDEN |
| Royal Schelde | Vlissingen | THE NETHERLANDS |
| Rpow Consulting S.L. | Sevilla | SPAIN |
| RPower LLC | The Woodlands | USA |
| RRI Energy Solutions LLC | Houston | USA |
| RSE S.p.A. | Milan | ITALY |
| Ruhr-Universitaet Bochum | Bochum | GERMANY |
| RWE Key Innogy GmbH | Dortmund | GERMANY |
| RWE Npower | Newark-on-Trent | UNITED KINGDOM |
| RWE Npower | Solihull | UNITED KINGDOM |
| RWE Npower | Didcot | UNITED KINGDOM |
| RWE Npower Aberthaw Power Station | Barry | UNITED KINGDOM |
| RWE Npower plc | Wales | UNITED KINGDOM |
| RWE Npower plc | Swindon | UNITED KINGDOM |
| RWE Power Aktiengesellschaft | Bergheim | GERMANY |
| RWE Power Aktiengesellschaft | Essen | GERMANY |
| S & B Engineers and Constructors | Houston | USA |
| S & S Energy Products | Houston | USA |
| S&W Energy Solutions Inc. | Kingwood | USA |
| Sabah Electricity Sdn. Bhd. | Kota Kinabalu | MALAYSIA |
| SABIC | Sittard | THE NETHERLANDS |
| Sacramento Municipal Utility District | Sacramento | USA |
| SACYRFLUOR | Llanera | SPAIN |
| SACYRFLUOR | Madrid | SPAIN |
| Sadelmi SpA | Sesto San Giovanni | ITALY |
| SAEL | New Delhi | INDIA |
| Sage Expert | Levallois-Perret | FRANCE |
| SAGE Team, a.s. | Brno | CZECH REPUBLIC |
| SAIC | Reston | USA |
| SAIPEM SpA | San Donato Milanese | ITALY |
| Salinco V.o.F. | Hengelo | THE NETHERLANDS |
| SAMPOL Ingenieria y Obras S.A. | Palma de Mallorca | SPAIN |
| Sampson, Engineer | Windsor | USA |
| Samsung C & T Corp. | Seoul | SOUTH KOREA |
| Samsung Engineering Co., Ltd. | Seoul | SOUTH KOREA |
| Samsung Engineering India Pvt. Ltd. | Noida | INDIA |
| Samsung Everland | Seoul | SOUTH KOREA |
| Samsung Heavy Industries Co., Ltd. | Kyungnam | SOUTH KOREA |
| Samsung Techwin Co. Ltd. | Seongnam-si | SOUTH KOREA |
| Sandech Consultoria Em Engenharia e Gestao Ltda. | Rio de Janeiro | BRAZIL |
| Sandwell Inc. | Montreal | CANADA |
| Sanko Enerji | Salihli | TURKEY |
| Santee Cooper | Moncks Corner | USA |
| Santos CMI | Quito | ECUADOR |
| Sarawak Energy Berhad | Kuching | MALAYSIA |
| Sarawak Shell Berhad | Miri | MALAYSIA |
| Sardegna Ricerche | Cagliari | ITALY |
| Sargent & Lundy, LLC | Chicago | USA |
| SaskPower | Regina | CANADA |
| Sasol Technology (PTY) Ltd. | Sasolburg | SOUTH AFRICA |
| Saudi Power Procurement Company | Riyadh | SAUDI ARABIA |
| SBM Offshore | Schieden | THE NETHERLANDS |
| SC Engineering Co. Ltd. | Seoul | SOUTH KOREA |
| Sceco Central | Riyadh | SAUDI ARABIA |
| Schelde Heron b.v. | Breda | THE NETHERLANDS |
| Schmit Engineering, Inc. | Arvada | USA |
| Schneider-Electric | Carlsbad | USA |
| Scientech, Inc. | Idaho Falls | USA |
| Scott Wilson Limited | Bristol | UNITED KINGDOM |
| Scottish and Southern Energy plc | Boddam | UNITED KINGDOM |
| Scottish and Southern Energy plc | Perth | UNITED KINGDOM |
| SEA Consulting Services | Cranbury | USA |
| Seabank Power Limited | Hallen | UNITED KINGDOM |
| Sebenzana Consulting Pty Ltd. | Woodmead | SOUTH AFRICA |
| Sega Inc. | Overland Park | USA |
| Seingim Global Service S.r.l. | Milan | ITALY |
| Seingim Global Service S.r.l. | Genova | ITALY |
| Seisa Servicios y Tecnologia | Monterey | MEXICO |
| Selas Fluid Processing Corporation | Houston | USA |
| Sembcorp Industries Ltd. | Singapore | SINGAPORE |
| SembCorp Utilities (UK) Ltd. | Middlesbrough | UNITED KINGDOM |
| Seminole Electric Cooperative Inc. | Palatka | USA |
| Seminole Electric Cooperative Inc. | Tampa | USA |
| Sempra Energy Solutions | Woodbridge | USA |
| Sempra Energy Solutions | Houston | USA |
| SENA | Santa Fe de Bogota | COLOMBIA |
| SENELEC | Dakar | SENEGAL |
| Sener Ingenieria y Sistemas Argentina S.A. | Buenos Aires | ARGENTINA |
| Sener Ingenieria y Sistemas S.A. | Vizcaya | SPAIN |
| Sener Ingenieria y Sistemas S.A. | Madrid | SPAIN |
| Seoul National University | Seoul | SOUTH KOREA |
| SEP n.v. | Arnhem | THE NETHERLANDS |
| SEPCOIII Electric Power Construction Corp. | Qingdao | CHINA |
| SER Energia, Brazil | Salvador | BRAZIL |
| Serveone | Seoul | SOUTH KOREA |
| Servicios Integrales de Consultoria Ltda. | Santa Fe de Bogota | COLOMBIA |
| SETAS INSAAT AS | Ankara | TURKEY |
| SETEC Energie Environnement | Paris | FRANCE |
| SGL Power Pty Ltd | Currambie | AUSTRALIA |
| Shandong Electric Power Engineering & Construction | Jinan | CHINA |
| Shanghai Boiler Works Ltd. | Shanghai | CHINA |
| Shanghai Electric Engineering Corp. | Shanghai | CHINA |
| Sharjah Electricity and Water Authority | Sharjah | UNITED ARAB EMIRATES |
| Shaw Group Inc. | Charlotte | USA |
| Shaw Stone & Webster | Cherry Hill | USA |
| Shaw Stone & Webster | Mumbai | INDIA |
| Shaw Stone & Webster | Stoughton | USA |
| Shaw Stone & Webster Inc. | Houston | USA |
| Shaw Stone & Webster Management Consultants | Cambridge | USA |
| Shell Canada Ltd. | Calgary | CANADA |
| Shell Development Company | Houston | USA |
| Shell Global Solutions (Malaysia) | Kuala Lumpur | MALAYSIA |
| Shell Global Solutions (US) Inc. | Houston | USA |
| Shell Global Solutions International b.v. | Amsterdam | THE NETHERLANDS |
| Shell International E & P Inc. | New Orleans | USA |
| Shell International Oil Products b.v | Den Haag | THE NETHERLANDS |
| Shell Qatar | Doha | QATAR |
| Shell Technology India Pte Ltd | Bangalore | INDIA |
| Shell UK Limited | Aberdeen | UNITED KINGDOM |
| Shikun & Binui / Solelaben EPC | Airport City | ISRAEL |
| Shinryo Corporation | Hong Kong | CHINA |
| Shinryo Corporation | Kuala Lumpur | MALAYSIA |
| Siemens AG | Muelheim | GERMANY |
| Siemens AG | Offenbach | GERMANY |
| Siemens AG | Erlangen | GERMANY |
| Siemens AG | Vienna | AUSTRIA |
| Siemens AG | Linz | AUSTRIA |
| Siemens Energy | Belgrade | SERBIA |
| Siemens Energy Inc. | Houston | USA |
| Siemens Energy Inc. | Orlando | USA |
| Siemens Energy Inc. | Pittsburgh | USA |
| Siemens Energy Oil & Gas | St. Petersburg | RUSSIA |
| Siemens Energy, Inc. | Houston | USA |
| Siemens Industrial Turbomachinery AB | Finspong | SWEDEN |
| Siemens Industry Inc. | Fairfax | USA |
| Siemens LLC | Dubai | UNITED ARAB EMIRATES |
| Siemens Ltd | Macquarie Park | AUSTRALIA |
| Siemens Ltd. | Vadodara | INDIA |
| Siemens Ltd. | Khobar | SAUDI ARABIA |
| Siemens Ltd. | Shanghai | CHINA |
| Siemens Ltd. | Beijing | CHINA |
| Siemens Ltd. Seoul | Seoul | SOUTH KOREA |
| Siemens Power Corporation | Vienna | AUSTRIA |
| Siemens Power Generation Asia Pacific | Selangor Darul Ehsan | MALAYSIA |
| Siemens Power Generation Limited | Bracknell | UNITED KINGDOM |
| Siemens Proprietary Limited | Midrand | SOUTH AFRICA |
| Siemens Pte Ltd. | Singapore | SINGAPORE |
| Siemens S.A. de C.V. | Mexico D.F. | MEXICO |
| Siemens s.r.o. | Brno | CZECH REPUBLIC |
| Siemens SA/NV | Huizingen | BELGIUM |
| Siemens Saudi Arabia | Khobar | SAUDI ARABIA |
| Siemens Turkey | Ankara | TURKEY |
| Siemens Westinghouse Canada, Inc. | Hamilton | CANADA |
| Sierra Pacific Resources | Las Vegas | USA |
| Sigma Energy Solutions Inc. | Melville | USA |
| SIGMAXYZ | Tokyo | JAPAN |
| Sikap Energy Ventures Sdn., Bhd. | Kuala Lumpur | MALAYSIA |
| Silesian University of Technology | Gliwice | POLAND |
| Siltumelektroprojekts | Riga | LATVIA |
| Sinclair Knight Merz | Auckland | AUSTRALIA |
| Sinclair Knight Merz | Brisbane | AUSTRALIA |
| Sinclair Knight Merz | St. Leonards | AUSTRALIA |
| Sinclair Knight Merz (Europe) Ltd. | London | UNITED KINGDOM |
| Sinclair Knight Merz (Europe) Ltd. | Newcastle Upon Tyne | UNITED KINGDOM |
| Sinclair Knight Merz Malaysia | Kuala Lumpur | MALAYSIA |
| Sinclair Knight Merz Pty., Ltd. | Perth | AUSTRALIA |
| Sinclair Knight Merz Pty., Ltd. | Armadale | AUSTRALIA |
| Singapore Power International | Singapore | SINGAPORE |
| Single Buoy Moorings Inc | Monaco | MONACO |
| Single Destination Engineering (SDE) | Sandton | SOUTH AFRICA |
| Sinopec Engineering Incorporated | Beijing | CHINA |
| SINTEF Materials and Chemistry | Trondheim | NORWAY |
| SIPS | Chennai | INDIA |
| SIRAM SpA | Milan | ITALY |
| SIRTIS S.r.l. | Genova | ITALY |
| Sithe Energies Australia Pty Ltd | Smithfield | AUSTRALIA |
| Sithe Energies, Inc. | Charlestown | USA |
| Sithe Global Canadian Power Services | Toronto | CANADA |
| Sithe Global Power | New York | USA |
| SK E&S | Seoul | SOUTH KOREA |
| SK Engineering & Construction Co., Ltd. | Seoul | SOUTH KOREA |
| SK Engineering & Construction India Private Ltd. | Gurgaon | INDIA |
| SK Gas | Seongnam-si | SOUTH KOREA |
| SK Power Company | Haslev | DENMARK |
| SK Telecom Company Ltd. | Seoul | SOUTH KOREA |
| SKANSKA CZ. a.s. | Praha | CZECH REPUBLIC |
| SKANSKA S.A. | Buenos Aires | ARGENTINA |
| Skoda Power Pvt. Ltd.. | Noida | INDIA |
| Skoda Power s.r.o. | Plzen | CZECH REPUBLIC |
| Skoda Power s.r.o. | Praha | CZECH REPUBLIC |
| Skoda Prague Invest Ltd. - CEZ ICT a.s. | Plzen | CZECH REPUBLIC |
| Skolkovo Institute of Science & Technology | Moscow | RUSSIA |
| Slovenske Elektrarne a.s. | Bratislava | SLOVAKIA |
| Slovenske Energeticke Strojarne a.s. (SES) | Tlmace | SLOVAKIA |
| SM Engineering | Waterford | USA |
| SMEC | Port Moresby | PAPUA NEW GUINEA |
| SMEC (Malaysia) Sdn Bhd. | Petaling Jaya | MALAYSIA |
| SMELT International d.d. | Ljubljana | SLOVENIA |
| SMM Pte Ltd | Singapore | SINGAPORE |
| Snamprogetti S.p.A. | San Donato Milanese | ITALY |
| SNC | Thorold | CANADA |
| SNC Lavalin | Lyon | FRANCE |
| SNC Lavalin | Jakarta | INDONESIA |
| SNC Lavalin | Montreal | CANADA |
| SNC Lavalin | Calgary | CANADA |
| SNC Lavalin, Inc. | Oakville | CANADA |
| SNC Lavalin, Inc. | Vancouver | CANADA |
| SNC-Lavalin Australia Pty. | Perth | AUSTRALIA |
| SNC-Lavalin Constructors Inc. (formerly NEPCO) | Bothel | USA |
| SNC-Lavalin Engineers & Constructors Inc. | Toronto | CANADA |
| SNC-Lavalin Polska Sp. z.o.o. | Warsaw | POLAND |
| SOCOIN Ingenieria y Construccion Industrial SLU | Pozuelo de Alarcon | SPAIN |
| SOFRESID | Paris La Defense | FRANCE |
| SOGREAH | Grenoble | FRANCE |
| Solar Euromed SAS | Dijon | FRANCE |
| Solar Power Group GmbH | Essen | GERMANY |
| Solar Turbines | San Diego | USA |
| Solar Turbines Switzerland SAGL | Riazzino | SWITZERLAND |
| Solel Solar Systems Ltd. | Beit Shemesh | ISRAEL |
| Solvay S.A. | Brussels | BELGIUM |
| Sonelgaz | Algiers | ALGERIA |
| Sorgenia Progetti S.r.l. | Genova | ITALY |
| South Carolina Electric & Gas Co. | Columbia | USA |
| South Centre of Power Engineering | Krasnodar | RUSSIA |
| South East Europe Consultants | Belgrade | SERBIA |
| Southern California Edison | Rosemead | USA |
| Southern California Edison Company | San Dimas | USA |
| Southern California Gas Co. | Los Angeles | USA |
| Southern Company Services | Wilsonville | USA |
| Southern Company Services | Birmingham | USA |
| Southern Electric plc | Maidenhead | UNITED KINGDOM |
| Southern Energy - Italia S.r.l. | Milano | ITALY |
| Southern Methodist University | Dallas | USA |
| Southern Power Company | Birmingham | USA |
| Southwest Generation | Denver | USA |
| SPE Noord | Gent | BELGIUM |
| Spectrum Energy, Inc. | Charlotte | USA |
| SPIE ENERTRANS | Cergy Pontoise | FRANCE |
| SRI Consulting | Menlo Park | USA |
| SRI International | Menlo Park | USA |
| SS&A Power Consultancy GmbH | Ehrendingen | SWITZERLAND |
| Stadtwerke Kiel | Kiel | GERMANY |
| Standardkessel GmbH | Duisburg | GERMANY |
| Stanley Consultants, Inc. | Muscatine | USA |
| Stanley Consultants, Inc. | Englewood | USA |
| Stantec | Boston | USA |
| Stantec | Regina | CANADA |
| Stantec Consulting | Raleigh | USA |
| Stantec Consulting Ltd | Fredericton | CANADA |
| Stantec Consulting Services | Denver | USA |
| Statoil | Trondheim | NORWAY |
| Statoil | Stavanger | NORWAY |
| Statoil ASA | Mechelen | BELGIUM |
| StatoilHydro ASA | Porsgrunn | NORWAY |
| STC ATEL SpA | Forli | ITALY |
| STEAG AG | Essen | GERMANY |
| Stellar | Jacksonville | USA |
| Stellar Group LLC | Dubai | UNITED ARAB EMIRATES |
| Sterling & Wilson Cogen Solutions Pvt Ltd | Mumbai | INDIA |
| Sterling Energy LLC | Atlanta | USA |
| Steven I. Freedman, Inc. | Deerfield | USA |
| Stewart & Hepburn Engineering LLC | Zionville | USA |
| Stewart Thermal Limited | Weeting Brandon | UNITED KINGDOM |
| Stone & Webster - A Shaw Group | Centennial | USA |
| Stone & Webster Canada | Toronto | CANADA |
| Stone & Webster Consultants Limited | Central Milton Keynes | UNITED KINGDOM |
| Stone & Webster Engineering Corp. | New York | USA |
| Stork Energy | Hengelo Ov. | THE NETHERLANDS |
| Stork NV | Hengelo | THE NETHERLANDS |
| Stowe Power | Hingham | USA |
| Strategic Energy Consultants LLC | Winter Park | USA |
| Strategic Power Systems, Inc. | Albany | USA |
| Stratus Engineering Services Corp. | Cranbury | USA |
| STX Engine Co. Ltd. | Changwon | SOUTH KOREA |
| STX Heavy Industries Co. Ltd. | Seoul | SOUTH KOREA |
| Suez Energy Generation NA, Inc. | Houston | USA |
| Suez Energy Middle East | Dubai | UNITED ARAB EMIRATES |
| Suez-Tractebel S. A. | Brussels | BRAZIL |
| SULCONSULT | Curitiba | BELGIUM |
| Sumitomo Corporation | Chuo-ku | JAPAN |
| Sumitomo Corporation | Abu Dhabi | UNITED ARAB EMIRATES |
| Sunlaw Energy Corp. | Los Angeles | USA |
| Sustainable Heat & Power Europe GmbH | Mulheim | GERMANY |
| Swan Hills Synfuels | Calgary | CANADA |
| Sydkraft Konsult AB | Malmoe | SWEDEN |
| Syska Hennessy Group | Princeton | USA |
| T.J. Cross Engineers, Inc. | Bakersfield | USA |
| T2E3, Inc. | Kirkland | USA |
| Taihei Dengyo Kaisha, Ltd. | Tokyo | JAPAN |
| Takuma Co., Ltd. | Takasago-city | JAPAN |
| Talleres y Montajes Industriales S.A. | Bilbao | SPAIN |
| Tallgrass | Houston | USA |
| Tampella | Espoo | FINLAND |
| Tampella Power Corp. | Williamsport | USA |
| Tapal Energy Limited | Karachi | PAKISTAN |
| TAQA Morocco | Sidi Bouzik, El Jadida | MOROCCO |
| Tata Chemicals Ltd. | Babrala | INDIA |
| Tata Chemicals Ltd. | Jamnagar | INDIA |
| Tata Chemicals Ltd. | Mumbai | INDIA |
| Tata Power Company Ltd. | Mumbai | INDIA |
| Taylor Woodrow Management & Engrg Ltd. | Southall | UNITED KINGDOM |
| TCE Consulting Engineers Limited | Bangalore | INDIA |
| Tebodin & Partners LLC | Muscat | SULTANATE OF OMAN |
| Tebodin Engineering b.v. | Den Haag | THE NETHERLANDS |
| TEC Hedland | Perth | AUSTRALIA |
| Techint | Seville | SPAIN |
| TECHINT Compagnia Tecnica Internazionale S.p.A. | Milan | ITALY |
| TECHINT Compania Tecnica Internacional | Buenos Aires | ARGENTINA |
| Technical University of Civil Eng. of Bucharest | Bucharest | ROMANIA |
| Technical University of Sofia | Sofia | BULGARIA |
| TECHNION-Israel Institute of Technology | Haifa | ISRAEL |
| Technip E&C Limited | Milton Keynes | UNITED KINGDOM |
| Technip Energies | Paris | FRANCE |
| TECHNIP Geoproduction (M) Sdn. Bhd. | Kuala Lumpur | MALAYSIA |
| TECHNIP S.p.A. | Rome | ITALY |
| Techno Consultants, Inc. | Tokyo | JAPAN |
| Technology Centre Mongstad | Mongstad | NORWAY |
| Technology Centre Mongstad | Montreal | CANADA |
| Technoprojekt a.s. | Ostrava-Moravska | CZECH REPUBLIC |
| Technovision Muhendislik Danismanlik Ve Dis Tic A. | Ankara | TURKEY |
| Tecnicas Reunidas S. A. | Madrid | SPAIN |
| Tecnimont S.p.A. | Milano | ITALY |
| Tecnoholding, S.A. | Barcelona | SPAIN |
| TECO Power Services | Tampa | USA |
| Tecsult Inc. | Montreal | CANADA |
| Tehnicki Fakultet Rijeka | Rijeka | CROATIA |
| TEi Ltd. | Ruislip | UNITED KINGDOM |
| TEI S.p.A. | Milano | ITALY |
| Tekfen Engineering | Istanbul | TURKEY |
| Teknik Janakuasa Sdn., Bhd. | Kuala Lumpur | MALAYSIA |
| Tellus Institute | Boston | USA |
| Temec Engineering Group Ltd | Burnaby | CANADA |
| Tenaga Nasional Berhad | Bangsar South | MALAYSIA |
| Tenaska, Inc. | Omaha | USA |
| Tennessee Valley Authority | Chattanooga | USA |
| Termica Celano SpA | Bologna | ITALY |
| Termicas Del Besos S.A. | Barcelona | SPAIN |
| Termoelektrarna Toplarna Ljubljana d.o.o. (TE-TOL) | Ljubljana | SLOVENIA |
| Termokimik Corporation SpA | Milano | ITALY |
| Termomeccanica Ecologia S.p.A. | La Spezia | ITALY |
| TerraPower LLC | Bellevue | USA |
| Terrestrial Energy Inc. | Oakville | CANADA |
| Terry Jordan | Indian Land | USA |
| Tetra Tech EC Inc. | Morris Plains | USA |
| Texaco Services Europe Ltd. | Ghent | BELGIUM |
| Texas A & M University | College Station | USA |
| Texas City Cogeneration L.P. | Texas City | USA |
| Texas Petrochemicals LP | Houston | USA |
| Textron Lycoming | Stratford | USA |
| Teyma Gestion de Contratos de Const. e Ingeneiria | Sevilla | SPAIN |
| TFJ Partners | Atlanta | USA |
| TGM Turbinas | Sertaozinho | BRAZIL |
| Thabile Engineering | Pinetown | SOUTH AFRICA |
| Thai MM Limited | Huay Kwang | THAILAND |
| Thai Shinryo Ltd. | Bangkok | THAILAND |
| Thales Engineering & Consulting | Rungis Cedex | FRANCE |
| The Hub Power Company | Karachi | PAKISTAN |
| The Industrial Company | Steamboat Springs | USA |
| The Institute of Applied Energy | Tokyo | JAPAN |
| The Stellar Group | Jacksonville | USA |
| Thel-e.t.b. Ingenieur-conseil | Lyon | FRANCE |
| Therma S.p.A | Milano | ITALY |
| Thermal Energy Alternatives, LLC | Kirkwood | USA |
| Thermal Energy Corporation (TECO) | Houston | USA |
| Thermal Power Research Institute | Xian | CHINA |
| Thermax Ltd. | Pune | INDIA |
| Thermo Ecotech | Waltham | USA |
| Thermodynamics Laboratory | Bandung | INDONESIA |
| ThermoGen Power Services Inc. | Montreal | CANADA |
| Thomassen Energy | Rheden | THE NETHERLANDS |
| Thorne International Boiler Services Ltd. | Bilston | UNITED KINGDOM |
| TIC - The Industrial Co | Englewood | USA |
| TIPIEL S.A. | Bogota | COLOMBIA |
| TNB / Ventures Division | Kuala Lumpur | MALAYSIA |
| TNB Engineering Corporation Sdn.Bhd. | Petaling Jaya | MALAYSIA |
| TNB Generation Asset Development | Petaling Jaya | MALAYSIA |
| TNB Renewables Sdn Bhd | Petaling Haya | MALAYSIA |
| TNO Apeldoorn | Apeldoorn | THE NETHERLANDS |
| Tokyo Electric Power Services Co., Ltd. | Tokyo | JAPAN |
| Tokyo Gas Co., Ltd. | Tokyo | JAPAN |
| Tolle Energy & Environment Consulting | Hamburg | GERMANY |
| TonenGeneral Kabushiki Kaisha Co. Ltd. | Kanagawa | JAPAN |
| TOPEC W2E Holding B.V. | Papendrecht | THE NETHERLANDS |
| Torresol Energy | Las Arenas | SPAIN |
| Torus Insurance | London | UNITED KINGDOM |
| Toshiba Corporation | Kawasaki | JAPAN |
| Toshiba Corporation | Yokohama | JAPAN |
| Toshiba Corporation | Tokyo | JAPAN |
| Toshiba International Corp. | Charlotte | USA |
| Toshiba International Corp. | San Francisco | USA |
| Toshiba International Corp. | West Allis | USA |
| Toshiba International Croporation Pty. Ltd. | Baulkham Hills BC | AUSTRALIA |
| Toshiba JSW Power Systems Pvt. Ltd. | DLF City | INDIA |
| Toshiba Plant System & Service Corporation | Yokohama | JAPAN |
| Toshiba Plant Systems & Services Corp. | Tokyo | JAPAN |
| Total E & P Nigeria | Port Harcourt | NIGERIA |
| Total Energy Services | Stafford | USA |
| TOTAL S.A. | Paris La Defense | FRANCE |
| TotalEnergies | Pau | FRANCE |
| TotalEnergies Electricite et Gaz de France | Paris | FRANCE |
| Totalfinaelf France | Harfleur | FRANCE |
| Toyo Engineering Corp. | Chiba | JAPAN |
| Toyo Setal Empreendimentos Ltda. | Sao Paulo | BRAZIL |
| Toyo-Thai Corporation Public Company Ltd. | Bangkok | THAILAND |
| TPP-20 | Moscow | RUSSIA |
| TPSC India Private Limited | Hyderabad | INDIA |
| Tractebel Energia S/A | Florianopolis | BRAZIL |
| Tractebel Energy Engineering | Brussels | BELGIUM |
| Tractebel Engineering S.A. | Brussels | BELGIUM |
| Tractebel Engineers & Constructors Pvt. | New Delhi | INDIA |
| Tractebel Ingegneria | Rome | ITALY |
| TransAlta | Col Lomas de Chapultepec | MEXICO |
| TransAlta Energy (Australia) Pty Ltd. | Perth | AUSTRALIA |
| TransAlta Energy Corp. | Calgary | CANADA |
| TransAlta Energy Corporation | Mississauga | CANADA |
| TransCanada | Becancour | CANADA |
| TransCanada Energy | Calgary | CANADA |
| TransCanada PipeLines | Calgary | CANADA |
| TransCanada Power | Toronto | CANADA |
| Transelektro Slovensko a.s. | Levice | SLOVAKIA |
| Transelektro Trade Co, Ltd. | Budapest | HUNGARY |
| Transfield Technologies Pty., Ltd. | Rydalmere | AUSTRALIA |
| Transfield Townsville Pty Ltd | Brisbane | AUSTRALIA |
| Transmission Engineering Service | Bangkhen | THAILAND |
| TRAPEC | Bucharest | ROMANIA |
| Tres Ltd. | Fukuoka | JAPAN |
| Trigen - Boston Energy Corp. | Boston | USA |
| Trigen - Philadelphia Energy Corp. | Philadelphia | USA |
| Trigen Cinergy Solutions | Cincinnati | USA |
| Trimeca USA, LLC | Houston | USA |
| Trine University | Angola | USA |
| Triton Karton | Nieuweschans | THE NETHERLANDS |
| Triveni Turbine Ltd. | Bangalore | INDIA |
| Tsinghua BP Clean Energy Researach Centre | Beijing | CHINA |
| Tsinghua University | Beijing | CHINA |
| TSK - INGEMAS | Gijon | SPAIN |
| TSK Flagsol Engineering GmbH | Koln (Cologne) | GERMANY |
| TSSI b.v. | Rheden | THE NETHERLANDS |
| TU Delft | Delft | THE NETHERLANDS |
| Tufts University | Medford | USA |
| Tupras Petroleum Refineries | Korfez | TURKEY |
| Turbo & Power Machinery Research Ctr. | Seoul | SOUTH KOREA |
| TurboCare Inc. | Fitchburg | USA |
| Turbomach, SA | Riazzino | SWITZERLAND |
| Turboservice Ltd. | Lodz | POLAND |
| Turkey Group | Pyrmont | AUSTRALIA |
| Tuten Ltd. | Istanbul | TURKEY |
| Tuthill Energy Systems | Burlington | USA |
| TUV Energy Service | Swindon | UNITED KINGDOM |
| TUV NORD Systems GmbH & Co. KG | Essen | GERMANY |
| TXU Energy Services | Dallas | USA |
| TXU Europe Power Ltd. | London | UNITED KINGDOM |
| U.S. Department of Energy | Morgantown | USA |
| U.S. Department of Energy / NETL | Pittsburgh | USA |
| U.S. Department of Energy / NETL | Albany | USA |
| U.S. Generating Company | Foxboro | USA |
| U.S. Generating Company | San Francisco | USA |
| UAE Corporation | San Ramon | USA |
| UAE Power Operations Corp. | Lowell | USA |
| UAE Power Operations Corp. | Woodcliff Lake | USA |
| UFRJ | Rio de Janeiro | BRAZIL |
| UHDE GmbH | Dortmund | GERMANY |
| UITESA | Madrid | SPAIN |
| UJV Rez. a.s.EGP | Prague | CZECH REPUBLIC |
| Ulster University | Newtownabbey | UNITED KINGDOM |
| Ulyanovsk State Technical University | Ulyanovsk | RUSSIA |
| UMA/B&V Ltd. | Mississauga | CANADA |
| UNAM | Odessa | USA |
| UNC Charlotte | Charlotte | USA |
| UNC Industrial Power | Mexico City | MEXICO |
| UNESP | Sao Paulo | BRAZIL |
| UNICAMP - State University of Campinas | Campinas | BRAZIL |
| Unicom Power Holdings | Chicago | USA |
| Union Carbide Corp. | Port Lavaca | USA |
| Union Gas Ltd. | Chatham | CANADA |
| Unit Investment N.V. | Istanbul | TURKEY |
| United Projects Services Ltd. | Beer-Sheva | ISRAEL |
| Universidad Autonoma de Baja California | Mexicali | MEXICO |
| Universidad Autonoma de Bucaramanga | Bucaramanga | COLOMBIA |
| Universidad Autonoma del Estado de Mexico | Toluca | MEXICO |
| Universidad Autonoma Metropolitana | Col. Vicentina Iztapalapa | MEXICO |
| Universidad Carlos III de Madrid | Madrid | SPAIN |
| Universidad de Antioquia | Medellin | COLOMBIA |
| Universidad De Cantabria | Cantabria | SPAIN |
| Universidad de Ingenieria y Tecnologia | Lima | PERU |
| Universidad de Jaen | Jaen | SPAIN |
| Universidad de Oviedo | Oviedo | SPAIN |
| Universidad de Salamanca | Salamanca | SPAIN |
| Universidad de Sevilla - Facultad de Fisica | Seville | SPAIN |
| Universidad de Vigo | Vigo | SPAIN |
| Universidad del Pais Vasco | Bilbao | SPAIN |
| Universidad Federal do ABC | Santo Andre | BRAZIL |
| Universidad Industrial de Santander | Bucaramanga | COLOMBIA |
| Universidad Loyola | Sevilla | SPAIN |
| Universidad Nacional Autonoma de Mexico - UNAM | Mexico City | MEXICO |
| Universidad Nacional de Colombia | Medellin | COLOMBIA |
| Universidad Nacional de Educacion a Distancia | Madrid | SPAIN |
| Universidad Politecnica de Cartagena | Cartagena | SPAIN |
| Universidad Politecnica de Madrid | Madrid | SPAIN |
| Universidad Pontificia Bolivariana | Medellin | COLOMBIA |
| Universidad Pontificia Comillas-ICAI | Madrid | SPAIN |
| Universidad Regiomontana, A.C. | Monterrey | MEXICO |
| Universidade de Sao Paulo | Sao Paulo | BRAZIL |
| Universidade do Rio de Janeiro | Rio de Janeiro | BRAZIL |
| Universidade Federal da Bahia (UFBA) | Salvador | BRAZIL |
| Universidade Federal de Itajuba (UNIFEI) | Itajuba | BRAZIL |
| Universidade Federal de Lavras | Lavras | BRAZIL |
| Universita Degli Studi di Bergamo | Dalmine | ITALY |
| Universita Degli Studi di Ferrara | Ferrara | ITALY |
| Universita Degli Studi Di Genova | Genova | ITALY |
| Universita Degli Studi di Napoli Federico II | Napoli | ITALY |
| Universita Degli Studi di Palermo | Palermo | ITALY |
| Universita Degli Studi di Udine | Udine | ITALY |
| Universita di Bologna | Bologna | ITALY |
| Universita di Cagliari | Cagliari | ITALY |
| Universita di Cassino | Cassino | ITALY |
| Universita di Firenze | Firenze | ITALY |
| Universitaet Karlsruhe | Karlsruhe | GERMANY |
| Universitat Rovira I Virgili | Tarragona | SPAIN |
| Universitatea Gheorghi Asachi Iasi | Iasi | ROMANIA |
| University of Alabama | Tuscaloosa | USA |
| University of Alberta | Edmonton | CANADA |
| University of Calgary | Calgary | CANADA |
| University of California | Irvine | USA |
| University of California | Berkeley | USA |
| University of California, Los Angeles | Los Angeles | USA |
| University of Cambridge | Cambridge | UNITED KINGDOM |
| University of Craiova | Craiova | ROMANIA |
| University of Glasgow | Glasgow | UNITED KINGDOM |
| University of Iowa | Iowa City | USA |
| University of Kansas | Lawrence | USA |
| University of Limerick | Limerick | IRELAND |
| University of Lincoln | Lincoln | UNITED KINGDOM |
| University of Malaysia | Pahang | MALAYSIA |
| University of Maryland | College Park | USA |
| University of Missouri | Columbia | USA |
| University of New Orleans | New Orleans | USA |
| University of New South Wales | Sydney | AUSTRALIA |
| University of Nottingham | Nottingham | UNITED KINGDOM |
| University of Oklahoma | Norman | USA |
| University of Sharjah | Sharjah | UNITED ARAB EMIRATES |
| University of Southampton | Southampton | UNITED KINGDOM |
| University of Technology | Sydney | AUSTRALIA |
| University of Technology | Baghdad | IRAQ |
| University of Tennessee | Knoxville | USA |
| University of Texas at Austin | Austin | USA |
| University of Washington | Seattle | USA |
| University of Zagreb | Zagreb | CROATIA |
| University Politehnica of Bucharest | Bucharest | ROMANIA |
| UnoCal Corp. | Sugar Land | USA |
| Unocal Geothermal Division | Santa Rosa | USA |
| Unversita della Calabria | Rende | ITALY |
| Urbas | Madrid | SPAIN |
| URS | New Orleans | USA |
| URS Corporation | Chicago | USA |
| US Funks Engineering Inc. | Littleton | USA |
| USAENE LLC Sucursal | Bogota D.C. | COLOMBIA |
| USF Smogless, S.p.A. | Milano | ITALY |
| UTC Engenharia S.A. | Consolacao | BRAZIL |
| UtiliCorp United | Kansas City | USA |
| Utility Engineering Corp. | Amarillo | USA |
| Utility Engineering Corp. | Denver | USA |
| Utility Support Group B.V. | EL Urmond | THE NETHERLANDS |
| W.D. Scott Consulting | Aston | USA |
| Waagner-Biro E & E GmbH | Graz | AUSTRIA |
| Walley Design | Varese | ITALY |
| Warsaw University of Technology | Warsaw | POLAND |
| Wartsila Corporation | Helsinki | FINLAND |
| Wartsila Italia S.p.A. | Peschiera Borromeo | ITALY |
| Wartsila North America Inc. | Annapolis | USA |
| Wartsila NSD Nederland B.V. | Zwolle | THE NETHERLANDS |
| Wartsila NSD North America | Annapolis | USA |
| Washington Group International | Princeton | USA |
| Washington Group International | Birmingham | USA |
| Washington Water Power Co. | Spokane | USA |
| Waste to Energy | Busto Arsizio | ITALY |
| WECTEC Global Projects Service, Inc. | Canton | USA |
| WECTEC Global Projects Service, Inc. | Charlotte | USA |
| Welgas Holdings Ltd. | Wellington | NEW ZEALAND |
| Welink | Milano | ITALY |
| Wellhead Electric | Sacramento | USA |
| Wellingdale Energy, Inc. | Fort McMurray | CANADA |
| West African Energy S.A. | Dakar | SENEGAL |
| West Virginia University | Morgantown | USA |
| Westcoast Power Inc. | Vancouver | CANADA |
| Western Farmers Electric Coopertive | Anadarko | USA |
| Western Power Corporation | Perth | AUSTRALIA |
| Western Power Service | Albuquerque | USA |
| Westinghouse Electric Company LLC | Cranberry Township | USA |
| Whitby Cogeneration LP | Whitby | CANADA |
| Willamette Industries, Inc. | Portland | USA |
| William H. Johnson | West Chester | USA |
| Williams Energy Services | Tulsa | USA |
| Williams Power Company | Tulsa | USA |
| Wing Group | The Woodlands | USA |
| Wisconsin Public Service Corp. | Green Bay | USA |
| Wood Group GTS | Loveland | USA |
| Wood Group GTS | Muelheim | GERMANY |
| Wood Group Heavy Industrial Turbines | Cumbernauld | UNITED KINGDOM |
| Wood Group Power Solutions Inc. | Houston | USA |
| Worley Nederland B.V. | The Hauge | THE NETHERLANDS |
| WorleyParsons | Lakewood | USA |
| WorleyParsons | Perth | AUSTRALIA |
| WorleyParsons (DRPL) pte Ltd. | Singapore | SINGAPORE |
| WorleyParsons Beijing | Beijing | CHINA |
| WorleyParsons Europe Energy Services Ltd. | Sofia | BULGARIA |
| WorleyParsons Europe Ltd. | Middlesex | UNITED KINGDOM |
| WorleyParsons Group | Folsom | USA |
| WorleyParsons Group Inc. | Reading | USA |
| WorleyParsons HGE | Mississauga | CANADA |
| WorleyParsons MEG | Calgary | CANADA |
| WorleyParsons Oman Eng. LLC | Muscat | OMAN |
| WorleyParsons Power | Melbourne | AUSTRALIA |
| WorleyParsons Services Pty Ltd. | North Sydney | AUSTRALIA |
| WPS New England Generation, Inc. | Caribou | USA |
| WRMS Engineering | Walnut Creek | USA |
| WS Atkins (Services) Ltd. | Epsom | UNITED KINGDOM |
| WS Atkins Consultants Limited | Garforth | UNITED KINGDOM |
| WSP Environment & Energy | Boulder | USA |