The amount of energy embedded in steel pylons, concrete footings, blades, wiring, magnets, land clearing and roads is more than a wind pylon would ever generate in its working life.
This is why I always say the lefty environmental loonies only like power that doesn't work.
Last Edit: Oct 29, 2014 12:26:56 GMT -8 by AztecBill
Since about 1976 the areal extent of sea-ice in the Northern Hemisphere has varied about a constant climatological level but in 1972-1975, sea-ice extent was significantly less - IPCC 1990 assessment, Page 224.