A recent visit to the fine Rhondda uplands clearly illustrated yet
again how useless wind turbines are in generating electricity.

With the coldest snap this winter and the demand for electricity at
its greatest, the wind turbines at Ffynnon Oer and presumably elsewhere
in Wales were quite motionless and therefore completely redundant. What
folly!

http://www.wind-watch.org/news/2008/12/17/can-we-afford-to-say-no/