| Eidsiva Bioenergi AS | Gjøvik | 1998 |
| Eidsiva Energi AS | Hamar | 2001 |
| Eidskog Energi AS | Magnor | 2009 |
| Eidsland Energi AS | Modalen | 2018 |
| Eigerøy Energi AS | Randaberg | 2022 |
| Eika Alliansen AS | Oslo | 2007 |
| Eiker Energi AS | Hokksund | 2020 |
| Eiker Kraftproduksjon AS | Hokksund | 1997 |
| Eiker Strøm AS | Hokksund | 2008 |
| Einangsmoen Solkraftverk AS | Oslo | 2025 |
| Einbugga Kraftverk AS | Oslo | 2025 |
| Einungstølsåna Kraftverk AS | Stord | 2020 |
| Eio Energi Aps Nuf | Dk-8200 Aarhus N | 2025 |
| Eitro Kraftverk AS | Eikelandsosen | 2006 |
| El-Ver AS | Oslo | 2018 |
| Elaway Aps Nuf | Dk-2300 København S | 2026 |
| Elaway AS | Oslo | 2012 |
| Elaway Charging AS | Oslo | 2025 |
| Elbio AS | Fiskum | 2019 |
| Elbåtlader Da | Florø | 2020 |
| Eldao Kraftverk AS | Veitastrond | 2014 |
| Elde Kraft AS | Rugsund | 2019 |
| Eldr Energy AS | Trondheim | 2026 |
| Electrabel | Be-1000 Brussels | 2017 |
| Electroroute Energy Trading Limited | Ie-Dublin D02 Td60 | 2022 |
| Elektrizitätswerk Der Stadt Zürich | Ch-8050 Zürich | 2021 |
| Eletra Energy AS | Lørenskog | 2022 |
| Elgane Vind AS | Arendal | 2021 |
| Elify Energy Norge AS | Vear | 2012 |
| Elinett AS | Molde | 1997 |
| Elkraft Aksjeselskap | Lørenskog | 1991 |
| Elling & Bjørn Petter Salgstjenester Da | Gjøvik | 2000 |
| Elmat AS | Kristiansund N | 1996 |
| Elmea AS | Svolvær | 2003 |
| Elmera Energy AS | Fyllingsdalen | 2024 |
| Elmera Group ASA | Fyllingsdalen | 2017 |
| Elmera Nordic AS | Fyllingsdalen | 1997 |
| Elsikkerhet Vest AS | Ørskog | 1999 |
| Elvenett AS | Hokksund | 1997 |
| Elverum Energi AS | Elverum | 1998 |
| Elvestad Solkraftverk AS | Oslo | 2024 |
| Elvia AS | Hamar | 1998 |
| Embla Kraft AS | Oslo | 2009 |
| Embretsfosskraftverkene Da | Drammen | 2010 |
| Emcc European Market Coupling Company GmbH Nuf | 20457 Hamburg | 2010 |
| Enbw Offshore Wind Norway AS | Oslo | 2019 |
| Enebakk Bioenergi AS | Sandvika | 2008 |
| Eneco Energy Trade BV | Oslo | 2008 |
| Energeia AS | Oslo | 2010 |
| Energeia Bolstadmarka AS | Oslo | 2024 |
| Energeia Borg AS | Oslo | 2026 |
| Energeia Gunnhus AS | Oslo | 2024 |
| Energeia Hagen Gård AS | Oslo | 2025 |
| Energeia Italy Holding AS | Oslo | 2015 |
| Energeia Marigaard AS | Oslo | 2024 |
| Energeia Norway Holding AS | Oslo | 2025 |
| Energeia Notodden AS | Notodden | 2024 |
| Energeia Opsal AS | Oslo | 2024 |
| Energeia Seval Skog AS | Oslo | 2019 |
| Energeia Veldre AS | Oslo | 2022 |
| Energeia Ålamoen AS | Oslo | 2024 |
| Energetick Aps Nuf | Dk-2150 Nordhavn | 2022 |
| Energima Energi AS | Lysaker | 2015 |
| Energinet.Dk | Dk-7000 Fredericia | 2016 |
| Energipluss AS | Tynset | 2017 |
| Energiselskapet Hardanger AS | Kinsarvik | 2016 |
| Energy Group Aps Nuf | Ulsteinvik | 2025 |
| Energy Saver AS | Drammen | 2019 |
| Energy Transition Company AS | Buvika | 2023 |
| Energyhubs AS | Oslo | 2019 |
| Enerq Solutions AS | Drøbak | 2016 |
| Enerva Ans | Ålesund | 2000 |
| Enerva AS | Ålesund | 2001 |
| Enetak AS | Slattum | 2025 |
| Engan Minikraft Da | Utskarpen | 2012 |
| Engelhart CTP Renewables GmbH Nuf | 10587 Berlin | 2022 |
| Engene Solar AS | Larvik | 2022 |
| Engerdal Energi Holding AS | Engerdal | 2008 |
| Engeset Kraft AS | Oslo | 2005 |
| Enida AS | Egersund | 2017 |
| Enny Asset Management AS | Lysaker | 2024 |
| Entelios AS | Kristiansand S | 2017 |
| Enter Energy AS | Stavanger | 2020 |
| Enzee Commodities | Dk-8000 Aarhus C | 2024 |
| Eolus Wind Power Management AB | Se-281 48 Hässleholm | 2020 |
| Equinor Gas Marketing Europe AS | Stavanger | 2007 |
| Equinor LNG Trading AS | Stavanger | 2024 |
| Equinor Power Services AS | Stavanger | 2026 |
| Eqva Renewables AS | Sunde I Sunnhordland | 2021 |
| Eralloys Holding AS | Porsgrunn | 2007 |
| Erdal Minikraft AS | Nordfjordeid | 2003 |
| Ergan Sol- Og Batteripark AS | Øyslebø | 2025 |
| Ervikselva Kraft AS | Oslo | 2019 |
| Esett OY | 00620 Helsinki | 2015 |
| Espeelvi Kraft AS | Hovland | 2012 |
| Espeland Minikraftverk AS | Leirvik I Sogn | 2014 |
| Etna Nett AS | Dokka | 2000 |
| Etnedal Biovarme SA | Etnedal | 2005 |
| Euro Wave Energy AS | Halden | 1992 |
| European Commodity Clearing AG | De-04109 Leipzig | 2018 |