To ask the Secretary of State for Energy and Climate Change what his estimate is of the amount of electricity generated by onshore wind farms in each of the last two months. (310919)

The Department collects wind data on a monthly basis. These data are published two months in arrears, so the latest data available are for October 2009. Available data for the last 12 months are given in the table.

Monthly data are only collected from major power producers (MPPs) and it is not possible to separate onshore and offshore wind generation. We collect more detailed data on an annual basis which cover both MPPs and smaller generators with an onshore/offshore split. In 2008 onshore wind farms generated 5,792GWh and offshore l,305GWh. Equivalent data for 2009 will be available on 29 July 2010.