| ECO SYSTEM | Gliwice, Poland | Visit site |
| ECOGY srl/gmbh | Lana, Italy | Visit site |
| ECOINTEGRAL INGENIERÍA, SL | Córdoba, Spain | Visit site |
| ECOPEACE | Gwangju, South Korea | Visit site |
| ECOPULSE | Mérida, Mexico | Visit site |
| ECOS Group | Las Palmas de Gran Canaria, Spain | Visit site |
| ECOVO SOLAR | José María Morelos, Mexico | Visit site |
| ECOsys (An ITG Company) | Freetown, Egypt | Visit site |
| ECPE European Center for Power Electronics | Nürnberg, Germany | Visit site |
| EDAMA - Energy, Water & Environment | عمّان, Jordan | Visit site |
| EDMI | Vif, France | Visit site |
| EDRI Solar | Chengdu Shi, China | Visit site |
| EE ENERGY ENGINEERS GmbH | Gelsenkirchen, Germany | Visit site |
| EED Advisory | Nairobi, Kenya | Visit site |
| EEL Greentech Belfast | Belfast, Ireland | Visit site |
| EEW Energy from Waste Delfzijl B.V. | Delfzijl, Germany | Visit site |
| EExion Energy | Petah Tikva, Israel | Visit site |
| EGGA - Galvanizing Europe | Brussels, Belgium | Visit site |
| EGGS, Part of Sopra Steria | Oslo, Norway | Visit site |
| EIGHT ADVISORY | Paris, France | Visit site |
| EIKTO TÜRKİYE | Döşemealtı, Türkiye | Visit site |
| EISAC Automation | Cairo, Egypt | Visit site |
| EIT AUTOMATION (ENGINEERING INNOVATION TECHNOLOGY) | Ahmedabad, India | Visit site |
| EJOT FIXING SOLUTIONS NIGERIA LTD | Lagos Mainland, Nigeria | Visit site |
| EJinstall B.V. | IJsselmuiden, Netherlands | Visit site |
| EKIUM | Lyon, France | Visit site |
| EKOPAK Sustainable Water | Deinze, Belgium | Visit site |
| EL Imaging | Ourimbah, Australia | Visit site |
| ELECTRICAL EQUIPMENT JOINT STOCK COMPANY | Bien Hoa, Vietnam | Visit site |
| ELMI Power | Niddatal, Germany | Visit site |
| ELTEC Green Energy GmbH | Berlin, Germany | Visit site |
| EM Impact Capital | London, United Kingdom | Visit site |
| ENAG | Quimper, France | Visit site |
| ENCYCLIS | Cranleigh, Ireland | Visit site |
| ENEO - the AEE Lebanon Training Partner | Lebanon | Visit site |
| ENEOS Renewable Energy Corporation | 東京都, Japan | Visit site |
| ENERMAT RENOVABLES | Ciudad Real, Spain | Visit site |
| ENERPLAN | La Ciotat, France | Visit site |
| ENERPRIME ECUADOR CIA LTDA | Quito, Ecuador | Visit site |
| ENERSADO | Quinta do Anjo, Portugal | Visit site |
| ENERSTEEL | Aytré, France | Visit site |
| ENGIE Brasil | Florianópolis, Brazil | Visit site |
| ENGIE Chile | Las Condes, Chile | Visit site |
| ENGIE México | Mexico City, Mexico | Visit site |
| ENGIE Vianeo | Courbevoie, France | Visit site |
| ENKA İnşaat ve Sanayi A.Ş. | Beşiktaş, Türkiye | Visit site |
| ENOVA Service | Bunde, Germany | Visit site |
| ENTEKA S.A. - Energy Technologies & Constructions | Chalandri, Greece | Visit site |
| ENVIROSCREEN SYSTEMS LLP | St Albans, United Kingdom | Visit site |
| EOMAP | Seefeld, Germany | Visit site |
| EOSGlobe | Kalyan, India | Visit site |
| EP Equipment | China | Visit site |
| EQS Global | a Kiwa company | Maia, Portugal | Visit site |
| ERBUD GROUP | Warszawa, Poland | Visit site |
| ERG (Air Pollution Control) Ltd | Horsham, United Kingdom | Visit site |
| ERGON PERU | Lima, Peru | Visit site |
| ERGY Soluciones Energéticas | Tuxtla Gutiérrez, Mexico | Visit site |
| ERM | Abu Dhabi | Visit site |
| ERREKA | Antzuola, Spain | Visit site |
| ESCO Lazio S.r.l | Latina, Italy | Visit site |
| ESE Solar | Liverpool, United Kingdom | Visit site |
| ESHRAQ SOLAR | Al-Riyadh, Saudi Arabia | Visit site |
| ESKAP GmbH | Nürnberg, Germany | Visit site |
| ESW | Bristol, United Kingdom | Visit site |
| ETF Partners - The Environmental Technologies Fund | London, United Kingdom | Visit site |
| ETS Efficient Technical Solutions GmbH (Elevion Group) | Gilching, Germany | Visit site |
| EUROVIA Polska | Kobierzyce, Poland | Visit site |
| EVALOR | Landivisiau, France | Visit site |
| EVCİL SOLAR ENERJİ | Budapest, Hungary | Visit site |
| EVISE | Leeuwarden, Netherlands | Visit site |
| EVOLEN | Puteaux, France | Visit site |
| EWEC | Abu Dhabi, United Arab Emirates | Visit site |
| EXOES | France | Visit site |
| EXRA TECHNICAL SERVICES Est | Dubai, United Arab Emirates | Visit site |
| Easy Being Green Pty Ltd | Australia | Visit site |
| Easy-Sun Sàrl | Echallens, Switzerland | Visit site |
| Ebbefos Holding A/S | København, Denmark | Visit site |
| Echion Technologies | Cambridge, United Kingdom | Visit site |
| Eco Logical Australia Pty Ltd | Sydney, Australia | Visit site |
| Eco'Solutions France - L.C.G | Vaulx-en-Velin, France | Visit site |
| EcoAct (part of Schneider Electric) | London, United Kingdom | Visit site |
| EcoMT | A Coruña, Spain | Visit site |
| EcoStandard Group | Moscow, Russia | Visit site |
| EcoVadis | Paris, France | Visit site |
| Ecocentro | Mérida, Mexico | Visit site |
| Ecoener | A Coruña, Spain | Visit site |
| Ecofy | Mumbai, India | Visit site |
| Ecology Australia Pty Ltd | Melbourne, Australia | Visit site |
| Ecolyte GmbH | Graz, Austria | Visit site |
| Econetix | Vienna, Austria | Visit site |
| Ecoprogreso. Carreteras y caminos ecológicos y sostenibles. Potabilización solar de agua. | Sant Boi de Llobregat, Spain | Visit site |
| Ecospill Ltd | Rotherham, United Kingdom | Visit site |
| Ecotherm | Hartkirchen, Austria | Visit site |
| Edanpower Installations Limited | Coventry, United Kingdom | Visit site |
| Edelsegger Metals | Ybbsitz, Austria | Visit site |
| Edison Next | Milano, Italy | Visit site |
| Edmij | Ouderkerk aan de Amstel, Netherlands | Visit site |
| Edvance | France | Visit site |
| Eelpower Energy | London, United Kingdom | Visit site |
| Efacec | Leça do Balio, Portugal | Visit site |
| Efficacy Advisors | Tamworth, Australia | Visit site |
| Efigen renewable energy | Medellín, Colombia | Visit site |
| Ege Kablo | Yunusemre, Türkiye | Visit site |
| Egret Solar | Xiamen Shi, China | Visit site |
| Eiffage Construction | France | Visit site |
| Eiffage Énergie Systèmes | Vélizy-Villacoublay, France | Visit site |
| Eiffel Investment Group | Paris, France | Visit site |
| Eikto Baterias de Lítio Brasil | Laguna, Brazil | Visit site |
| Einride | Stockholm, Sweden | Visit site |
| Ekotechnik Czech | Praha, Czech Republic | Visit site |
| Ekwil | Nanterre, France | Visit site |
| Ekzel AB | Linköping, Sweden | Visit site |
| El Seif Engineering Contracting | Sharjah, United Arab Emirates | Visit site |
| El av Sol | Västerås, Sweden | Visit site |
| Elecnor Australia | Melbourne, Australia | Visit site |
| Elecnor Group | Madrid, Spain | Visit site |
| Elecnor do Brasil | Rio de Janeiro, Brazil | Visit site |
| Electraplan | Érd, Hungary | Visit site |
| Electric Vehicle Summit & Awards | Dublin, Ireland | Visit site |
| Electricity Transformation Canada | Toronto, Canada | Visit site |
| ElectroFleet GmbH | Osnabrück, Germany | Visit site |
| ElectroMechanica | Johannesburg, South Africa | Visit site |
| Electryone AI | London, United Kingdom | Visit site |
| Elegancia Contracting & Industries | لوسيل, Qatar | Visit site |
| Eleia Energía | Madrid, Spain | Visit site |
| Elektro Imboden AG | Mellingen, Switzerland | Visit site |
| Elektro- Installatiebedrijf Van Lanen | Mill, Netherlands | Visit site |
| Elemental Group | Luxembourg | Visit site |
| Eletrowatts Engenharia Elétrica | Bombinhas, Brazil | Visit site |
| Elettricità Futura | Roma, Italy | Visit site |
| Elevated Survey Solutions | Brisbane, Australia | Visit site |
| Elexicon Energy Inc. | Ajax, Canada | Visit site |
| Elgór + Hansen SA | Chorzów, Poland | Visit site |
| Elipse | Schoten, Belgium | Visit site |
| EllisDon | London, Canada | Visit site |
| Eltechna Paneelbouw BV | Amersfoort, Netherlands | Visit site |
| Eltrim Kable | Ruszkowo, Poland | Visit site |
| Elumija Group | Ingolstadt, Germany | Visit site |
| Elvaco AB | Kungsbacka, Sweden | Visit site |
| Elysia Energia Solar | Porto Alegre, Brazil | Visit site |
| Embuild Wallonie | Brussels, Belgium | Visit site |
| Emera | Halifax, Canada | Visit site |
| Emica Solar | Abanto y Ciérvana-Abanto Zierbena, Spain | Visit site |
| Emirates Electrical Engineering LLC | Abu Dhabi, United Arab Emirates | Visit site |
| Empery Solar | China | Visit site |
| EnBW Sverige | Falkenberg, Sweden | Visit site |
| Enaltia Solar | Dos Hermanas, Spain | Visit site |
| Enber | Heerenveen, Netherlands | Visit site |
| Endless Energy Group Pty Ltd | Melbourne, Australia | Visit site |
| Ener-G-Africa | Paarl, South Africa | Visit site |