| Green Energy for Education Limited | Radstock | 2010 |
| Green Energy Hub NI Ltd | Cookstown | 2021 |
| Green Energy International Limited | Stockport | 2016 |
| Green Energy Investments Ltd | Stockport | 2016 |
| Green Energy Limited | Ware | 2009 |
| Green Energy Matrix Ltd | London | 2023 |
| Green Energy Nationwide Ltd | Wigan | 2022 |
| Green Energy Path Ltd | Manchester | 2025 |
| Green Energy Production UK Limited | London | 2011 |
| Green Energy Scotland C.I.C. | Irvine | 2020 |
| Green Energy Solutions (South West) Limited | Plymouth | 2013 |
| Green Energy Source Limited | Shotts | 2023 |
| Green Energy SPV Limited | Manchester | 2021 |
| Green Energy Storage 140 Limited | Aylesbury | 2023 |
| Green Energy Trading Limited | Norwich | 2014 |
| Green Energy Ventures Ltd | London | 2023 |
| Green Falcon Energy Limited | Norwich | 2025 |
| Green Farm Energy (Ireland) Limited | Omagh | 2004 |
| Green Farm Energy (UK) Limited | Omagh | 2004 |
| Green Farm Energy Centre Limited | Norwich | 2022 |
| Green Farm Energy Ltd | Huddersfield | 2012 |
| Green Farm Solar Limited | London | 2020 |
| Green Flow Energy Systems Ltd | Eastleigh | 2023 |
| Green Footprint UP and Over Ltd | Sheffield | 2019 |
| Green Frog Asset Management Limited | Tamworth | 2015 |
| Green Frog Industries Limited | Tamworth | 2021 |
| Green Frog Power (Gort Bess) Limited | Tamworth | 2023 |
| Green Frog Power (Kells) Limited | Tamworth | 2023 |
| Green Frog Power (Livesey) Limited | Leamington Spa | 2023 |
| Green Frog Power (Tremoge) Limited | Tamworth | 2023 |
| Green Future Farms Limited | Aberdeenshire | 2010 |
| Green GAS Developments Ltd | Melton Mowbray | 2022 |
| Green GAS Engineering Services Limited | Bristol | 2018 |
| Green GAS Fuels Limited | Norwich | 2021 |
| Green GAS Group Ltd | Farringdon | 2021 |
| Green GAS Oxon Limited | Reading | 2017 |
| Green Generation Energy Networks Cymru Limited | Cardiff | 2020 |
| Green Global Energy Ltd | Ilkley | 2020 |
| Green Goal Energy Limited | Wokingham | 2011 |
| Green Guardians Solution Limited | Grays | 2023 |
| Green Highland Allt Choire a Bhalachain (255) Limited | Edinburgh | 2011 |
| Green Highland Allt Ladaidh (1148) Limited | Edinburgh | 2011 |
| Green Highland Allt Luaidhe (228) Limited | Edinburgh | 2011 |
| Green Highland Allt Phocachain (1015) Limited | Edinburgh | 2011 |
| Green Highland Renewables (Ledgowan) Limited | Edinburgh | 2010 |
| Green Highland Renewables (Loch Arkaig) Limited | Edinburgh | 2013 |
| Green Highland Renewables Ltd | Perth | 2007 |
| Green Highland Shenval Limited | Edinburgh | 2013 |
| Green Hydrogen Energy Company Limited | City Of London | 2023 |
| Green KW C.I.C. | London | 2013 |
| Green Lane Solar Limited | London | 2014 |
| Green Lane Solar Park Limited | London | 2023 |
| Green Light & Power Co. Limited | Powys | 2007 |
| Green Link Electrical Limited | London | 2023 |
| Green Living Trading Limited | London | 2016 |
| Green Nation Energy Ltd | Radstock | 2016 |
| Green Nation Solar Electricity Ltd | Radstock | 2011 |
| Green Nation Three Ltd | Radstock | 2021 |
| Green Network Energy Ltd | Birmingham | 2015 |
| Green Network UK PLC | Brighton | 2012 |
| Green Off-Grid Solutions Ltd | Chichester | 2024 |
| Green Olive Utility Ltd | York | 2016 |
| Green Park Wind Park Limited | Stroud | 1998 |
| Green Partner Energy Ltd | Taunton | 2025 |
| Green Peak Solutions Limited | Rotherham | 2022 |
| Green Phase Ltd | Leigh | 2022 |
| Green Plan Energy (Wellingborough) Limited | London | 2012 |
| Green Planet Makers Ltd | London | 2023 |
| Green Potential Ltd | London | 2023 |
| Green Power Generators (Two) Ltd | Glastonbury | 2020 |
| Green Power Services Ltd | Upminster | 2024 |
| Green Power Solar Limited | London | 2018 |
| Green Power Supply Limited | Hereford | 2020 |
| Green Power Trustee Ltd | Manchester | 2023 |
| Green Puffin Limited | King'S Lynn | 2014 |
| Green PV Ltd | Taunton | 2025 |
| Green Renewable Energy Limited | Aberdeen | 2018 |
| Green Reserve Limited | London | 2024 |
| Green Rigg Windfarm Limited | Houghton Le Spring | 2011 |
| Green Road Wind Ltd | Newtownstewart | 2016 |
| Green Seed Energy Limited | Radlett | 2022 |
| Green Solar PVT Ltd | Slough | 2023 |
| Green Spark Renewable Energy (UK) Ltd | Thorpe-Le-Soken | 2013 |
| Green Square Technical Services Ltd | Manchester | 2022 |
| Green Supplier Limited | Brighton | 2017 |
| Green Sustainable Business Solutions Limited | Reading | 2025 |
| Green Sustainable Energy Limited | Halifax | 2012 |
| Green Systems Engineering Limited | Oakley | 2009 |
| Green Tech Powerplant Ltd | London | 2025 |
| Green Utilities Limited | Weybridge | 2021 |
| Green Ventures Renewables Limited | Prestbury | 2013 |
| Green Volt Energy Ltd | Rotherham | 2022 |
| Green Volt Offshore Windfarm Ltd | Edinburgh | 2021 |
| Green Wats Ltd | Liverpool | 2023 |
| Green Wind Energy Ltd | Magherafelt | 2011 |
| Green Works Innovations Limited | Birmingham | 2024 |
| Greenacre Redbridge Limited | London | 2013 |
| Greenacre Solar Energy Limited | London | 2012 |
| Greenair Group Ltd | London | 2025 |
| Greenan Generation Limited | Coleraine | 2012 |