| Noravind AS | Alta | 2004 |
| Norbioen AS | Skjetten | 2024 |
| Nord Energi AS | Trondheim | 2005 |
| Nord Energy OY Nuf | Fi-00700 Helsinki | 2025 |
| Nord Power AS | Oslo | 2021 |
| Nord Prosjektfinansiering AS | Musken | 2021 |
| Nord Vest Kraft AS | Eidsvåg I Romsdal | 2024 |
| Nord Østerdal Kraftlag Andelsverk AS | Tynset | 1999 |
| Nord-Salten Kraft AS | Ulvsvåg | 2010 |
| Nord-Salten Kraft Holding AS | Ulvsvåg | 2019 |
| Nord-Trøndelag Elektrisitetsverk AS | Steinkjer | 2008 |
| Nord-Østerdal Kraftlag SA | Tynset | 1944 |
| Nordavind Energi Da | Bodø | 2025 |
| Nordavind Energi Nordland AS | Fauske | 2025 |
| Nordavind Energi Trøndelag AS | Steinkjer | 2025 |
| Nordavindar Offshore Wind AS | Fornebu | 2020 |
| Nordbotn Kraftverk AS | Ramfjordbotn | 2016 |
| Nordbøåna Kraft AS | Oslo | 2007 |
| Nordel Energi AS | Drammen | 2021 |
| Nordenfjeldske Energi AS | Trondheim | 1993 |
| Nordex Sverige Norway Bransch | Se-75323 Uppsala | 2018 |
| Nordic Bioenergy AS | Trondheim | 2025 |
| Nordic Energy AS | Verdal | 2012 |
| Nordic Energy House Aps | Dk-8000 Aarhus C | 2023 |
| Nordic Energy Invest AS | Trondheim | 2007 |
| Nordic Green Power AS | Drammen | 2005 |
| Nordic Heat Solution AS | Brumunddal | 2024 |
| Nordic Hydro AS | Narvik | 2015 |
| Nordic Hydro Holding AS | Narvik | 2015 |
| Nordic Power AS | Narvik | 2014 |
| Nordic Power Torsnes AS | Narvik | 2009 |
| Nordic Wind AS | Verdal | 2017 |
| Nordic Wind Norway AS | Oslo | 2019 |
| Nordic Wind Power Da | Oslo | 2016 |
| Nordic Zero Waste AS | Ålesund | 2023 |
| Nordkraft AS | Narvik | 2004 |
| Nordkraft Energidrift AS | Narvik | 2015 |
| Nordkraft Industrinett AS | Narvik | 2021 |
| Nordkraft Invest AS | Narvik | 2022 |
| Nordkraft Magasin AS | Narvik | 1978 |
| Nordkraft Prosjekt AS | Narvik | 2003 |
| Nordland Energi Ans | Tverlandet | 2001 |
| Nordlandskraft AS | Bodø | 2002 |
| Nordlink Norge AS | Oslo | 2010 |
| Nordlysenergi AS | Oslo | 2017 |
| Nordrenergi AS | Haugesund | 2020 |
| Nordry AS | Hønefoss | 2021 |
| Nordsiden Kraft AS | Halden | 2016 |
| Nordsjø Energi AS | Hundvåg | 2022 |
| Nordvest Nett AS | Ørskog | 1999 |
| Nordvik Kraft AS | Sunndalsøra | 2005 |
| Nordåna Kraft AS | Bygland | 2005 |
| Nordåna Og Dalaåna Kraft AS | Dale I Sunnfjord | 2019 |
| Norefjell Nett AS | Noresund | 2020 |
| Norgesgruppen Fornybar AS | Ålgård | 2015 |
| Norgesgruppen Fornybar Solenergi AS | Ålgård | 2025 |
| Norgeskraft AS | Oslo | 2010 |
| Norico Norge AS | Trondheim | 2024 |
| Norlys Energy Trading A/S Nuf | Dk-9000 Aalborg | 2024 |
| Norsjøkraft AS | Ulefoss | 2012 |
| Norsk Atom Energi AS | Stavanger | 2026 |
| Norsk Gassnett AS | Oslo | 2006 |
| Norsk Havvind AS | Karmsund | 2020 |
| Norsk Hydro Brasil Ltda | Br-22250 145 Rio De Janeiro | 2019 |
| Norsk Hydro Energia Ltda | Br-Cep 66035-3400, 2305 Belem - Pa | 2019 |
| Norsk Hydrogen AS | Ålesund | 2020 |
| Norsk Miljøkraft AS | Ramfjordbotn | 1996 |
| Norsk Miljøkraft Engineering Da | Tromsdalen | 1996 |
| Norsk Sol I Telemark AS | Granli | 2023 |
| Norsk Vannkraft AS | Bergen | 2021 |
| Norsk Vind AS | Stavanger | 1996 |
| Norsk Vind Bergeheia AS | Stavanger | 2018 |
| Norsk Vind Energi AS | Stavanger | 2018 |
| Norsk Vind Honna AS | Stavanger | 2019 |
| Norsk Vind Hordaland AS | Stavanger | 2018 |
| Norsk Vindpro AS | Tananger | 1998 |
| Northconnect AS | Kristiansand S | 2010 |
| Northconnect KS | Kristiansand S | 2011 |
| Northpool | Nl-2316 Wz Leiden | 2023 |
| Norwegian Carbon AS | Vallset | 2023 |
| Norwegian Mussel Company AS | Larvik | 2001 |
| Norwegian Power AS | Kristiansand S | 2019 |
| Nos Nova AS | Sandnes | 2019 |
| Notodden Energi AS | Notodden | 2012 |
| Notodden Energi Holding AS | Notodden | 2012 |
| Nottveit Energi AS | Modalen | 2011 |
| Nottveit Holding AS | Bergen | 2024 |
| Nova Energi AS | Sellebakk | 2018 |
| Nova Holdings AS | Fornebu | 2025 |
| Now Project AS | Oslo | 2017 |
| NSK Eiendom AS | Ulvsvåg | 2005 |
| Nte Energi AS | Steinkjer | 2005 |
| Nte Marked AS | Steinkjer | 2007 |
| Nte Montenegro AS | Steinkjer | 2010 |
| Nte Solkraft AS | Steinkjer | 2020 |
| Nver AS | Stavanger | 2019 |
| Nydal Kraft AS | Førde | 2004 |
| Nydalen Energi AS | Oslo | 2002 |
| Nydalselva Kraft AS | Vik I Sogn | 2008 |
| Nye Hitra Vind AS | Oslo | 2025 |