Government/industry advertised wind farm efficiency:
“Wind turbines will generate on average 30% of their rated capacity over a year.”John Muir Trust [ a green trust] study results for UK wind farms:
* below 20% of capacity more than half the time;"Sustainable" energy sources are proving to be economically and politically unsustainable. Premier McGuinty et al take note.
* below 10% of capacity over one third of the time;