- Biomass
- Coal or gas generated electricity
- Combined heat and power
- Community or district energy networks
- Geothermal energy
- Heat networks
- Hydroelectricity
- Liquefied petroleum gas (LPG)
- Microgeneration
- Natural gas
- Photovoltaics
- Renewable energy
- Shale gas
- Solar thermal energy
- Tidal lagoon power
- Wind energy
- Marine energy and hydropower