Question

To ask the Secretary of State for Energy and Climate Change, what estimate he has made of the proportion of the UK's energy requirement that will be generated by (a) onshore wind, (b) offshore wind, (c) solar and (d) nuclear energy sources by the end of 2015.

The range of estimates for generation by source, as a proportion of the UK's total electricity demand in 2015, is as follows:

Proportion of UK electricity requirement met by different sources, 2015

These have been calculated using data derived from the annual update of energy and emissions projections:

https://www.gov.uk/government/publications/updated-energy-and-emissions-projections-2013.