Electricity generation produces about 30% of UK carbon dioxide emissions, and more renewable energy is seen as key to reducing the climate change impact from this activity.
Feed-in tariffs are being developed by government to incentivise small-scale renewable energy generation projects, and could come into force some time in 2010.
Along with planning difficulties, one of the key barriers to new renewable energy projects at present is their ability to connect to the national grid.
The UK government's main measure for promoting the generation of renewable electricity is the Renewables Obligation (RO) system, introduced in 2002 and currently being reformed to encourage new technologies.