Renewables Company Index - G
- Gaia-Wind Ltd. - Glasgow
- GAME Engineering Ltd - Lincoln
- Garrad Hassan & Partners Ltd. - Bristol
- Gec-co - Southampton
- Geowarmth Heat Pumps Ltd - Newcastle upon Tyne
- Glasgow Furniture Initiative - Glasgow
- Glenside Recycling U K Ltd - Smethwick
- Global Card Technologies - Wellingborough
- go cnc - Ventnor
Go Geothermal Ltd - Newton Aycliffe- Go Green Devon Ltd - Newton Abbot
- Gold Starr Fats & Oils Ltd - Bolton
- Goodlife Biodegradable Products - Warrington
- Grab Away - Chelmsford
- Grab for Hire - Chatham
- Grabco - Sawbridgeworth
- Grace Recycling Ltd - Rochdale
- Grays Waste Management Ltd - Holyhead
- Green Deeds Recycling - Biggleswade
- Green Deeds Recycling Liverpool - Liverpool
- Green Earth Packaging - Letchworth
- Green Light Enterprise Ltd - Derby
- Green Plan-IT Ltd - Lutterworth
- Green Resource Recycling (Grr) Ltd - Watford
- Greenbarnes Ltd - Brackley
- Greenworks (Scotland) Ltd - Edinburgh
- Ground and Water Ltd - Alton
- Grouped Renewables Ltd - Montrose