What energy options does the UK have?
23 November 2011 Last updated at 00:19 GMT
The government has said it wants to completely de-carbonise our electricity supply by 2050.
The measures will have a huge impact on how we generate power.
Most of our electricity currently comes from old-style coal and gas plants - neither of which will be possible in future.
Professor David Mackay is the government's chief scientific advisor on climate change, explains the energy options available to the UK.