- Cadi Electrics Ltd
- Centreco (UK) Ltd
- Eco UK Group
- Energy Efficient Solutions Group (EES Group)
- FTI Communication Systems Ltd
- Green Cabin Company Limited
- Green Energy Technical Services Ltd
- Greenio Ltd.
- Hertz Electrical Contractors Ltd
- ISO Energy Ltd
- KS Connexions
- Polysolar Limited
- Smart Systems UK Ltd
- Stratford Energy
- Synergy Power Ltd
- Tomato Energy
