And running aground.
A new analysis of wind energy supplied to the UK National Grid in recent years has shown that wind farms produce significantly less electricity than had been thought, and that they cause more problems for the Grid than had been believed.
El Reg additionally reports that electricity generated by wind power tends to come in just when it's least needed, and is thus is helping even less than believed.
Just another little Inconvenient Truth for the greenies. Not that they care.