Form EIA-923, Electric Power Generation and Fuel Consumption, Monthly Time Series File – Preliminary Data File for 2008 (revised as of March 2009).
This form reports monthly electricity production from January to December 2008 of 203 wind energy facilities in the U.S.
The total production was 52,025,898 megawatt-hours, an output of 28.21% of the average installed capacity in 2008, according to the American Wind Energy Association, of 20,994 megawatts.
Wind energy production made up 1.27% of the total electricity production in 2008, according to the complete EIA-293 form , of 4,110,258,881 megawatt-hours.
Download original document: EIA-923: U.S. wind energy production, 2008 
URL to article: https://www.wind-watch.org/documents/us-wind-energy-production-2008/
URLs in this post:
 the complete EIA-293 form: http://www.eia.doe.gov/cneaf/electricity/page/eia906_920.html
 EIA-923: U.S. wind energy production, 2008: https://docs.wind-watch.org/eia923-wnd-december2008.xls