| EnergyBeyond | South Africa | Visit site |
| EnergyCo | Australia | Visit site |
| EnergyCon | Vimieiro, Portugal | Visit site |
| EnergyLab | Sydney, Australia | · |
| EnergyNova | Bijeljina, Bosnia and Herzegovina | Visit site |
| EnergyPlanet | Nazareth, Belgium | Visit site |
| Energyetika | Palazzolo sull'Oglio, Italy | Visit site |
| Energyminer GmbH | Gröbenzell, Germany | Visit site |
| Energyra Europe | Amstelveen, Netherlands | Visit site |
| Energyra Tailor Made Solar (EasyFix Solar) | Westknollendam, Netherlands | Visit site |
| Energyway SA | Genève, Switzerland | Visit site |
| Energywise Ireland | Blarney, Ireland | · |
| Energyze | Perth, Australia | Visit site |
| Energía Aljaval | Córdoba, Spain | Visit site |
| Energía Real | Mexico City, Mexico | Visit site |
| Energía Solar Ingesolar | Chía, Colombia | · |
| EnergíaMax | Madrid, Spain | Visit site |
| EnergíaSolarCanarias | Agüimes, Spain | Visit site |
| Enerji Depolama Platformu | Adıyaman Merkez, Türkiye | · |
| Enerjia | Brisbane, Australia | Visit site |
| Enerjisa Üretim | Ataşehir, Türkiye | · |
| Enerkem | Montréal, Canada | Visit site |
| Enerklima | Catania, Italy | Visit site |
| Enerland | Zaragoza, Spain | Visit site |
| Enerparc Energy | Bengaluru, India | Visit site |
| Enerpro Biogaz | Vern-sur-Seiche, France | Visit site |
| Enerside Energy | Argentona, Spain | Visit site |
| Enerside Energy | L'Hospitalet de Llobregat, Spain | Visit site |
| Enerside Energy | Madrid, Spain | Visit site |
| Enerside Energy | Fortaleza, Brazil | Visit site |
| Enerside Energy | Los Ángeles, Chile | Visit site |
| Enerside Energy | Foggia, Italy | Visit site |
| Enerside Energy | Lima, Peru | Visit site |
| Enersol | La Guardia, Bolivia | Visit site |
| Enerson Solar | Navojoa, Mexico | Visit site |
| Enertech Fuel Solutions Pvt Ltd. | Ahmedabad, India | Visit site |
| Enertech Srl | Milano, Italy | Visit site |
| Enertect Batteries | Singapore, Singapore | Visit site |
| Enertek del Caribe | San Juan, Puerto Rico | Visit site |
| Enerven | Adelaide, Australia | Visit site |
| Enery | Vienna, Austria | Visit site |
| Enerzjyk Skûlenboarch | Drachten, Netherlands | Visit site |
| Enesa Solar | Sântana de Mureș, Romania | Visit site |
| Enetek Power | Heliopolis, Egypt | Visit site |
| Enexa | Pereira, Colombia | Visit site |
| Enexya | Castres, France | Visit site |
| Engel Energy | Barberà del Vallès, Spain | Visit site |
| Engelhart | London, United Kingdom | Visit site |
| Engeman | Recife, Brazil | Visit site |
| Engeman | Macaé, Brazil | Visit site |
| Engeman | São Paulo, Brazil | Visit site |
| Engeman | Montes Claros, Brazil | Visit site |
| Engeman | Aracaju, Brazil | Visit site |
| Engeman | Fortaleza, Brazil | Visit site |
| Engenera Renewables Group | Newcastle upon Tyne, United Kingdom | Visit site |
| Engeser | Schramberg, Germany | Visit site |
| Engineering 2K S.p.A. | Zibido San Giacomo, Italy | Visit site |
| Engineering Contracting Company LLC | Dubai, United Arab Emirates | Visit site |
| Enginuity Power Solutions | Australia | Visit site |
| Englobe | Québec, Canada | · |
| Eni Plenitude Wind & Energy | Cesena, Italy | · |
| Enicab | Biskra, Algeria | Visit site |
| Enicab | Oumache, Algeria | Visit site |
| Enika | Nová Paka, Czech Republic | Visit site |
| Enity | Køge, Denmark | Visit site |
| Enlight Energy Services | Milano, Italy | · |
| Enlight Mexico | Mexico City, Mexico | Visit site |
| Enlight Renewable Energy Ltd (ENLT) | Rosh HaAyin, Israel | Visit site |
| Enlightened Clean Energy | Vaughan, Canada | · |
| Enlumin GmbH | Neu-Isenburg, Germany | Visit site |
| Ennatuurlijk B.V. | Eindhoven, Netherlands | Visit site |
| Ennova Renovables | El Campello, Spain | Visit site |
| Ennova Renovables | Dénia, Spain | Visit site |
| Ennova Renovables | Almargem do Bispo, Portugal | Visit site |
| Ennova Renovables | Samborondón, Ecuador | Visit site |
| Enny.no | Oslo, Norway | Visit site |
| Enova SF | Trondheim, Norway | Visit site |
| Enoé | Marseille, France | Visit site |
| Enpal.pro | Berlin, Germany | Visit site |
| Enray Power | London, United Kingdom | Visit site |
| Enrich Energy Pvt. Ltd. | Pune, India | Visit site |
| Ensmar | Shenzhen Shi, China | · |
| Ensmart Power | Braintree, United Kingdom | Visit site |
| Enso Energy | Lydney, United Kingdom | Visit site |
| Ensol Batteries | Paris, France | Visit site |
| Ensoltec | Aalter, Belgium | Visit site |
| Entech Electronics | Australia | Visit site |
| Entech smart energies | Quimper, France | Visit site |
| Entegre Solar | Üsküdar, Türkiye | Visit site |
| Entoria Energy | Singapore, Singapore | Visit site |
| Entreprise CHARIER | France | Visit site |
| Entricity | Kifissia, Greece | Visit site |
| Entrix | München, Germany | · |
| Entropyst | Glasgow, United Kingdom | Visit site |
| Entura | Hobart, Australia | Visit site |
| EnviTec Biogas AG | Lohne, Germany | Visit site |
| EnviTec Biogas S.r.l. | Verona, Italy | Visit site |
| Envidatec South East Asia | Singapore, Singapore | Visit site |
| Envinergy | Frontignan, France | Visit site |
| Enviro Analysts & Engineers Pvt. Ltd | Mumbai, India | Visit site |
| EnviroCentre | Ottawa, Canada | Visit site |
| Enviroguide a DNV Company | Dublin, Ireland | Visit site |
| Environment Park | Torino, Italy | Visit site |
| Environment and Climate Change Canada | Gatineau, Canada | Visit site |
| Environmental Energies Limited | Market Harborough, United Kingdom | Visit site |
| Environmental Protection Agency (EPA) Ireland | Rathaspick, Ireland | Visit site |
| Environmental Protection Engineering | Pireas, Greece | Visit site |
| Environmental Solutions EcoConServ | Mansoura, Egypt | Visit site |
| Environmental Testing And laboratories Company (ETLCO) | Al-Riyadh, Saudi Arabia | Visit site |
| Envision ESS | Shanghai, China | · |
| Eocycle | Anjou, Canada | Visit site |
| Eolas Consulting | Blackpool, United Kingdom | Visit site |
| EolicCat - Associació Eòlica de Catalunya | Tiana, Spain | Visit site |
| Eolion Energía | Móstoles, Spain | Visit site |
| Eolmed | Port-la-Nouvelle, France | Visit site |
| Epic Environmental | Brisbane, Australia | Visit site |
| Epishine | Linköping, Sweden | Visit site |
| Episolar BV | Sittard, Netherlands | Visit site |
| Episolar BV | Ede, Netherlands | Visit site |
| Eplan Solar | Sfântu Gheorghe, Romania | Visit site |
| Equatorial Power Ltd. | Kampala, Uganda | Visit site |
| Equitix | London, United Kingdom | Visit site |
| Equitrónica SAS | Funza, Colombia | Visit site |
| Equity Energies | Coventry, United Kingdom | Visit site |
| Erciyes Anadolu Holding | Kocasinan, Türkiye | Visit site |
| Erco Energía | Medellín, Colombia | Visit site |
| Eren Holding | Ataşehir, Türkiye | Visit site |
| Ergostech Renewal Energy Solutions | Campinas, Brazil | Visit site |
| Ergy ™ | Salta, Argentina | Visit site |
| Ergy ™ | Villa San Lorenzo, Argentina | Visit site |
| Erikoğlu Sunsystem | Merkezefendi, Türkiye | Visit site |
| Erma Energy | La Teste-de-Buch, France | · |
| Ernst Schweizer | Hedingen, Switzerland | Visit site |
| ErsaElectronics | Singapore, Singapore | Visit site |
| Ertex Solar | Amstetten, Austria | Visit site |
| Escelco | Bembibre, Spain | Visit site |
| Eseasa Offshore | Mexico City, Mexico | Visit site |
| Esenboğa Elektrik | Çankaya, Türkiye | · |
| Eskasoni Renewables | Eskasoni, Canada | Visit site |
| Espe S.p.A. | Grantorto, Italy | Visit site |
| Esquisse Solaire | Bussigny, Switzerland | Visit site |
| EsseSolar | Gallarate, Italy | Visit site |
| Essens Renewable Indonesia | Jakarta, Indonesia | · |
| Essens Renewable Private Limited (Formerly RWE Solar India and Belectric Photovoltaic India Pvt Ltd) | Mumbai, India | · |
| Essential Services Commission | Melbourne, Australia | Visit site |
| Essential Solar | Melbourne, Australia | Visit site |
| Esserenergia S.p.A. | Pontedera, Italy | Visit site |
| Esserenergia S.p.A. | Monza, Italy | Visit site |
| Estar Energy | Xiamen Shi, China | Visit site |
| Estar Energy | France | Visit site |