| Alchemy Renewable Energy | St. Louis, Missouri | Visit site |
| Alder Renewables | Louisville, Colorado | Visit site |
| Aldo Solar | Maringá, Paraná | Visit site |
| Aldridge Electric | Libertyville, Illinois | Visit site |
| Alectra Inc. | Mississauga, Ontario | Visit site |
| Alencon Systems, LLC | Hatboro, Pennsylvania | Visit site |
| Aleo Solar | Prenzlau, Brandenburg | Visit site |
| Alevro | Perth, Western Australia | Visit site |
| AlexForm | Alexandria | Visit site |
| Alexandria | Curitiba, Paraná | Visit site |
| Alfa Laval Aalborg Header-coil A/S | Aalborg, North Denmark Region | Visit site |
| AlfaTech | San Jose, California | Visit site |
| Alfanar Projects | Rendsburg, Schleswig-Holstein | Visit site |
| Algebris Investments | London, England | Visit site |
| Align Solar Protection | South Jordan, Utah | Visit site |
| Alitta Solar | Austin, Texas | Visit site |
| Alkor | Menderes, İzmir | Visit site |
| All Aboard Fund | New York, New York | Visit site |
| All American Facility Maintenance | Sunrise, Florida | Visit site |
| All Energy Australia | Sydney, New South Wales | Visit site |
| All-State Electrical | Macon, Georgia | Visit site |
| AllPOWERS | · | Visit site |
| Allen + Shariff Corporation | Columbia, Maryland | Visit site |
| Allesun | Santa Clara, California | Visit site |
| Allgrand | Baghdad, Baghdad | · |
| Alliance for Rural Electrification | Brussels, Brussels-Capital | Visit site |
| Alliance for Tribal Clean Energy | Washington, DC | Visit site |
| Alliant Consulting, Inc. | San Diego, California | Visit site |
| Allianz | München, Bavaria | Visit site |
| Allied Universal | Irvine, California | Visit site |
| Allimex | Tessenderlo, Limburg | Visit site |
| Allterra Solar | Santa Cruz, California | Visit site |
| Allume ANZ | Melbourne, Victoria | Visit site |
| Allwyn Cables | Rajkot, Gujarat | Visit site |
| Allye | London, England | Visit site |
| Almabani General Contractors | Jeddah, Mecca | Visit site |
| Almaden | Jebel Ali, Dubai | Visit site |
| Alokozia | کندهار, Kandahar | Visit site |
| Alpex Solar Ltd. | Basti, Uttar Pradesh | Visit site |
| Alpha Environmental + Engineering | Asheville, NC | Visit site |
| Alpha Generation | Kennard, Texas | Visit site |
| Alpha MEP | Orange, California | Visit site |
| Alpha Power Systems | Tampa, Florida | Visit site |
| Alpha Wire | Elizabeth, New Jersey | Visit site |
| AlphaGen Energy | Chesterfield, England | Visit site |
| AlphaTracker | Torremolinos, Málaga | Visit site |
| Alphatec PC | Washington, District of Columbia | Visit site |
| Alps Solar Energy Inc | · | Visit site |
| Alserkal Envirol | Dubai, Dubai | Visit site |
| AlsoEnergy | Boulder, Colorado | Visit site |
| Alsolis SA | Rancate, Ticino | Visit site |
| Altech Group | Ngaliema, Kinshasa | Visit site |
| Altenia | Terna Energy Solutions | Roma, Rome | Visit site |
| Alterna énergie | Poitiers, Vienne | Visit site |
| Alternate Energy Inc. | Honolulu, Hawaii | Visit site |
| Alternative Energy Development, Corp. (AED) | Fort Lee, New Jersey | Visit site |
| Alterrus Helical Piles | The Woodlands, Texas | Visit site |
| Altpowerng | Lagos, Lagos | Visit site |
| AlumaPower | Sarnia, Ontario | Visit site |
| Alumdunia SDN. BHD. | Chuzhou Shi, Anhui | Visit site |
| Alumil Solar | Thessaloniki, Central Macedonia | Visit site |
| Aluminum Extrusion Consultants | Osceola, Missouri | Visit site |
| Alumni Ventures | Manchester, New Hampshire | Visit site |
| Alusin Solar | Asturias | Visit site |
| Alvah Group, Inc. | Quincy, California | Visit site |
| Alvern Cables | Germiston, Gauteng | Visit site |
| Alves Kablo | Pursaklar, Ankara | Visit site |
| Always Solar | Perth, Western Australia | Visit site |
| Aman International Engineering Consultancy | ولاية السيب, Muscat Governorate | Visit site |
| Amara Raja Group | Hyderabad, Telangana | Visit site |
| AmarnaEnergy | Lisboa, Lisbon | Visit site |
| Ambee | Princeton, New Jersey | Visit site |
| Amberside Advisors | London, England | Visit site |
| Amberside Capital | Hemel Hempstead, England | Visit site |
| Ambibox GmbH | Mainz, Rhineland-Palatinate | Visit site |
| Ambient Confort | Vineland, New Jersey | Visit site |
| Ambient Fuels | New York, New York | Visit site |
| Ambilev Oceanografia e Hidrografia | Vitória, Espírito Santo | Visit site |
| Ambyint | Calgary, Alberta | Visit site |
| American Battery Factory Inc. | American Fork, Utah | Visit site |
| American Biogas Council | Washington, District of Columbia | Visit site |
| American Electric Power | Columbus, Ohio | Visit site |
| American Electric, LLC | Lake Huntington, New York | Visit site |
| American Electrical Contracting | Jacksonville, Florida | Visit site |
| American Galvanizers Association | Centennial, Colorado | Visit site |
| American Ground Screw Mfg & Supply | Des Moines, Iowa | Visit site |
| American Home Contractors | Fulton, Maryland | Visit site |
| American Honda Motor Company, Inc. | Torrance, California | Visit site |
| American Lithium Energy (ALE) | Carlsbad, California | Visit site |
| American Petroleum Institute - Global Industry Services | Washington, District of Columbia | Visit site |
| American Pile and Foundation, LLC | Somerville, New Jersey | Visit site |
| American Renewable Energy Institute (AREI) | Aspen, Colorado | Visit site |
| American Solar Enterprises LLC | Sterling, Virginia | Visit site |
| American Solar Operations | Broken Arrow, Oklahoma | Visit site |
| American Wiring, Inc | San Diego, California | Visit site |
| Ameridian Commercial | Sharonville, Ohio | Visit site |
| Amiblu | Klagenfurt am Wörthersee, Carinthia | Visit site |
| Ammongas | Søborg, Capital Region of Denmark | Visit site |
| Ammonia Europe | Etterbeek, Brussels-Capital | Visit site |
| Ammonit Wind Tunnel GmbH | Admannshagen-Bargeshagen, Mecklenburg-Western Pomerania | Visit site |
| Amokabel | Alstermo, Kronoberg | Visit site |
| Amp Americas | Chicago, Illinois | Visit site |
| Amp X | London, England | Visit site |
| Amperesand | Singapore, Central Singapore Community Development Council | Visit site |
| Amperex Technology | Fujian | Visit site |
| Ampernext | София, Sofia Capital | Visit site |
| Amperon | Kennard, Texas | Visit site |
| Amphenol | Wallingford, Connecticut | Visit site |
| Ampirical | Covington, Louisiana | Visit site |
| Ampjack Industries Ltd. | Winnipeg, Manitoba | Visit site |
| Ampton Energy | Vellore, Tamil Nadu | Visit site |
| Amptron | St. Louis, Missouri | Visit site |
| Anaergia | Burlington, Ontario | Visit site |
| Analog Devices | Wilmington, Massachusetts | Visit site |
| Analytical Quality Associates | Albuquerque, New Mexico | Visit site |
| Anatolia Wind | Bayraklı, İzmir | Visit site |
| Anbaric | Wakefield, Massachusetts | Visit site |
| Anchor Products, LLC | Haltom City, Texas | Visit site |
| Andersen in Spain | Pinto, Madrid | Visit site |
| Andes Energy | Bogotá, Bogotá | Visit site |
| Andes Solar | Huechuraba, Santiago Metropolitan Region | Visit site |
| Andrade Gutierrez S.A. | São Paulo, São Paulo | Visit site |
| Anew Climate | Houston, Texas | Visit site |
| Anglesey Solar and Electrical Ltd | Llangefni, Wales | Visit site |
| Anglia Solar | London, England | Visit site |
| Anipsotiki SA | Mannford, Oklahoma | Visit site |
| Ankara Solar | Altındağ, Ankara | Visit site |
| Anker Innovations ANZ | Melbourne, Victoria | Visit site |
| Ansa | Paris, Île-de-France | Visit site |
| Antaisolar | Xiamen Shi, Fujian | · |
| Antares Electrolysis S.r.l. | Genova, Genoa | Visit site |
| Anthesis APAC | Melbourne, Victoria | Visit site |
| Anthesis Esp | Manlleu, Barcelona | Visit site |
| Anthesis Group | London, England | Visit site |
| Antora Energy | San Jose, California | Visit site |
| Anu Solar Power Pvt. Ltd. | Bengaluru, Karnataka | Visit site |
| Anu Structurals | Hyderabad, Telangana | Visit site |
| Anygap | Shenzhen Shi, Guangdong | Visit site |
| Anza Renewables | Oakland, California | Visit site |
| Aparajita Solar | Kolkata, West Bengal | Visit site |
| Aparna Rollform | Hyderabad, Telangana | Visit site |
| Apave International | Paris, Texas | Visit site |
| Aplus Engenharia | Blumenau, Santa Catarina | Visit site |
| Apollo Energy | Denver, Colorado | Visit site |
| Apollo Global Management, Inc. | New York, New York | Visit site |
| Apollo Mission Critical Engineering | Atlanta, Georgia | Visit site |
| Apollo New Energy | Denver, Colorado | Visit site |
| Apolo Energia | São João Baptista, Portalegre | Visit site |
| Apparent Powers Systems FZCO | Dubai, Dubai | · |
| Applied Ceramics | Fremont, California | Visit site |