A 10GW fleet of wind farms across the UK can guarantee to provide less than two per cent of its maximum output
Wind farms can never be relied upon to keep the lights on in Britain because there are long periods each winter in which they produce barely any power, according to a new report by the Adam Smith Institute.
The huge variation in wind farms’ power output means they cannot be counted on to produce energy when needed, and an equivalent amount of generation from traditional fossil fuel plants will be needed as back-up, the study finds.
http://www.thegwpf.com/wind-farms-can-never-deliver-uk-energy-security/
sunshine hours 
Reblogged this on Centinel2012 and commented:
Wind power is a joke — there is no way to make it suitable for Grid level power! It can have only very limited uses and most of them only work when heavily subsidized.
Scientists, Engineers, Physicists have know this for years. This is, they have know it for about 100 years. That is why they build real power plants based on fossil fuels and/or nuclear energy.
The only fairly reliable renewable is hydroelectric energy based on the “storage of solar energy” via gravity and rain. If you want to call “solar energy” reliable, go ahead!!!
As we enter this new colder era, due to less solar energy, there will be less energy. This will have the effect of less energetic winds [trade winds, etc.] At the poles, the temperatures will plummet, the ice
area will expand and not melt, becoming thicker. The lack of heat at the equator will not drive the cold regions as far north [south]. The result will be creeping cold moving North to South [South to north].