| Energiforsk AB | Stockholm, Stockholm | Visit site |
| Energiföretagen Sverige | Stockholm, Stockholm | Visit site |
| Energima Gruppen | Lysaker, Akershus | Visit site |
| Energise Africa | Oxford, England | Visit site |
| Energotechnika-Energorozruch S.A. | Gliwice, Silesian Voivodeship | Visit site |
| Energotherm Group | Przeźmierowo, Greater Poland Voivodeship | Visit site |
| Energreen Nederland | Almere, Flevoland | Visit site |
| Energreen SA | Wavre, Walloon Brabant | Visit site |
| Energy Action | Sydney, New South Wales | Visit site |
| Energy Alternatives India | Chennai, Tamil Nadu | Visit site |
| Energy Bees | Austin, Texas | Visit site |
| Energy Capital & Power | Cape Town, Western Cape | Visit site |
| Energy Club NT | Darwin, Northern Territory | Visit site |
| Energy Competence Centre GmbH (ECC) | Berlin, Berlin | Visit site |
| Energy Council of South Africa | Johannesburg, Gauteng | Visit site |
| Energy Design Works | Dover, Delaware | Visit site |
| Energy Dome | Milano, Milan | Visit site |
| Energy Electrical Contractors | Foxborough, Massachusetts | Visit site |
| Energy Glass Solar | Scottsdale, Arizona | Visit site |
| Energy Green Data | Pontevedra, Pontevedra | Visit site |
| Energy Innovation Hub | بيروت, Beirut | Visit site |
| Energy Lab | Beaconsfield, Victoria | Visit site |
| Energy Loan Network | Simi Valley, California | Visit site |
| Energy Management Collaborative (EMC) | Minneapolis, Minnesota | Visit site |
| Energy Modelling Hub - Carrefour de modélisation énergétique | Montréal, Quebec | Visit site |
| Energy Recruiting | League City, Texas | Visit site |
| Energy Redesign | Vancouver, British Columbia | Visit site |
| Energy Renewal Partners, LLC | Austin, Texas | Visit site |
| Energy Safety Response Group | Delaware, Ohio | Visit site |
| Energy Service Partners | Torrance, California | Visit site |
| Energy Systems Catapult | Birmingham, England | Visit site |
| Energy Systems Design, Inc. | Scottsdale, Arizona | Visit site |
| Energy Toolbase | Jensen Beach, Florida | Visit site |
| Energy Wind & Renewables LTD. (EWR) | Rocky View County, Alberta | Visit site |
| Energy5 | Voorhees, New Jersey | Visit site |
| EnergyBeyond | Johannesburg, Gauteng | Visit site |
| EnergyBillCruncher | Beverly Hills, California | Visit site |
| EnergyBlocs | Los Angeles, California | Visit site |
| EnergyPlanet | Nazareth, East Flanders | Visit site |
| EnergyScape Renewables | Denver, Colorado | Visit site |
| EnergySolutions | Salt Lake City, Utah | Visit site |
| EnergyX | Austin, Texas | Visit site |
| Energyminer GmbH | Gröbenzell, Bavaria | Visit site |
| Energía Aljaval | Córdoba, Córdoba | Visit site |
| Enerpro Biogaz | Vern-sur-Seiche, Ille-et-Vilaine | Visit site |
| Enershare Energy | Shenzhen Shi, Guangdong | Visit site |
| Enerside Energy | Argentona, Barcelona | Visit site |
| Enersine | Gavirate, Varese | Visit site |
| Enertech Fuel Solutions Pvt Ltd. | Ahmedabad, Gujarat | Visit site |
| Enertek del Caribe | San Juan, San Juan | Visit site |
| Enertis Applus+ | Madrid, Madrid | Visit site |
| Enertronica Santerno | Bologna | Visit site |
| Enerven | Adelaide, South Australia | Visit site |
| Enerzinx, LLC | Irving, Texas | Visit site |
| Enerzjyk Eastermar | Eastermar, Friesland | Visit site |
| Enerzjyk Skûlenboarch | Drachten, Friesland | Visit site |
| Enexya | Castres, Tarn | Visit site |
| Enfros | Ulundurpettai, Tamil Nadu | Visit site |
| Engelhart | London, England | Visit site |
| Engeman | Recife, Pernambuco | Visit site |
| Engenium Group | Washington, District of Columbia | Visit site |
| Engeser | Schramberg, Baden-Württemberg | Visit site |
| Engineered Flexible Products | St. Michael, Minnesota | Visit site |
| Engineered Systems Power Generation - A Canadian Renewable Energy Company Incorporated | Windsor, Ontario | Visit site |
| Engineering 2K S.p.A. | Zibido San Giacomo, Milan | Visit site |
| Engineering Contracting Company LLC | Dubai, Dubai | Visit site |
| Enginuity Power Solutions | Tasmania | Visit site |
| Enicab | Biskra, Biskra | Visit site |
| Enika | Nová Paka, Hradec Králové | Visit site |
| Enity | Køge, Region Zealand | Visit site |
| Ennatuurlijk B.V. | Eindhoven, North Brabant | Visit site |
| Ennis Steel, Ind. | Ennis, Texas | Visit site |
| Ennova Renovables | El Campello, Alicante | Visit site |
| Enova SF | Trondheim, Trøndelag | Visit site |
| Enphase Energy | Fremont, California | Visit site |
| Enpower Greentech Inc. | Ann Arbor, Michigan | Visit site |
| Ensko Solar | Nantong Shi, Jiangsu | Visit site |
| Entech Electronics | South Australia | Visit site |
| Entegrity | Little Rock, Arkansas | Visit site |
| Enteligent | Morgan Hill, California | Visit site |
| Entergy | New Orleans, Louisiana | Visit site |
| Entero Energy LLC | Trophy Club, Texas | Visit site |
| Enthalpy Analytical | North Little Rock, Arkansas | Visit site |
| Entreprise CHARIER | Pays de la Loire | Visit site |
| Enverus | Austin, Texas | Visit site |
| Envinergy | Frontignan, Hérault | Visit site |
| Enviro Analysts & Engineers Pvt. Ltd | Mumbai, Maharashtra | Visit site |
| EnviroCentre | Ottawa, Ontario | Visit site |
| EnviroScience, Inc. | Stow, Ohio | Visit site |
| Enviroguide a DNV Company | Dublin, Dublin | Visit site |
| Environment Park | Torino, Turin | Visit site |
| Environment and Climate Change Canada | Gatineau, Quebec | Visit site |
| Environmental League of Massachusetts (ELM) | Boston, Massachusetts | Visit site |
| Environmental Protection Agency (EPA) Ireland | Rathaspick, Wexford | Visit site |
| Environmental Protection Engineering | Pireas, Attica | Visit site |
| Environmental Quality Management, Inc. | Cincinnati, Ohio | Visit site |
| Environmental Solutions & Innovations, Inc. | Cincinnati, Ohio | Visit site |
| Envocore | Gambrills, Maryland | Visit site |
| Eolas Consulting | Blackpool, England | Visit site |
| Eolmed | Port-la-Nouvelle, Aude | Visit site |
| Eos Energy Enterprises, Inc. | Edison, New Jersey | Visit site |
| Epic Environmental | Brisbane, Queensland | Visit site |
| Episolar BV | Sittard, Limburg | Visit site |
| Equal Ventures | New York, New York | Visit site |
| Equatorial Power Ltd. | Kampala, Kampala | Visit site |
| Equitix | London, England | Visit site |
| Equitrónica SAS | Funza, Cundinamarca | Visit site |
| Equity Microgrids, LLC | 美国 | Visit site |
| Erciyes Anadolu Holding | Kocasinan, Kayseri | Visit site |
| Eren Holding | Ataşehir, Istanbul | Visit site |
| Ergostech Renewal Energy Solutions | Campinas, São Paulo | Visit site |
| Ergy ™ | Salta, Salta | Visit site |
| Ernst Schweizer | Hedingen, Zürich | Visit site |
| ErsaElectronics | Singapore, Central Singapore Community Development Council | Visit site |
| Eseasa Offshore | Mexico City, Mexico City | Visit site |
| Essential Services Commission | Melbourne, Victoria | Visit site |
| Esserenergia S.p.A. | Pontedera, Pisa | Visit site |
| Estar Energy | Xiamen Shi, Fujian | Visit site |
| Estithmar Holding | لوسيل, Al Daayen | Visit site |
| Eteck | Voorburg, South Holland | Visit site |
| Eterna Indonesia | Jakarta Selatan, Jakarta | Visit site |
| Eternal Energy | League City, Texas | Visit site |
| Eternal Sun | Den Haag, South Holland | Visit site |
| Ethex | Oxford, England | Visit site |
| Ethraa-Solar Energy Solutions Provider | Al Aqiq, Al-Baha | Visit site |
| EticaAG | Greensburg, Pennsylvania | Visit site |
| Euclid Power | New York, New York | Visit site |
| Euclide | Casalborgone, Turin | Visit site |
| Eunice Power | Amarousio, Attica | Visit site |
| Eurekite | Enschede, Overijssel | Visit site |
| EuroEnergy | Glyfada, Attica | Visit site |
| Euroklimat | Member of Elevion Group | Suchy Las, Greater Poland Voivodeship | Visit site |
| Europacable | Brussels, Brussels-Capital | Visit site |
| Eurotas Ltd | Belfast, Northern Ireland | Visit site |
| Evalan | Amsterdam, North Holland | Visit site |
| EverEnviro Resource Management Private Limited | Gurugram, Haryana | Visit site |
| EverLine | Houston, Texas | Visit site |
| EverPower Wind Holdings | Pittsburgh, Pennsylvania | Visit site |
| Everfuel | Herning, Central Denmark | Visit site |
| Evergreen Climate Innovations | Chicago, Illinois | Visit site |
| Evergreen Investment Partners AG | Zug, Zug | Visit site |
| Evergreen Italia S.R.L. | Milano, Milan | Visit site |
| Evergrow | Castro Valley, California | Visit site |
| Evergy Engineering GmbH | München, Bavaria | Visit site |
| Everj Engineering Inc. | Hilliard, Ohio | Visit site |
| Everllence | Augsburg, Bavaria | Visit site |
| Everon | Irving, Texas | Visit site |
| Eversola | 彰化縣, Changhua County | Visit site |
| Evertop Wire Cable | 臺北市, Taipei | Visit site |
| Evie Networks | Sydney, New South Wales | Visit site |