On Sun, 2 Mar 2008 22:52:30 -0000 someone who may be "BRG" wrote this:-
The wind does not suddenly stop. How it will blow can be forecast very well in the two timescales which matter in the UK electricity market, a few days ahead and (far more accurately) one hour ahead of real time. The few days ahead allows other plant to be wound up if necessary. The one hour ahead allows participation in the short term market before gate closure.
While the past does not guarantee the future it is the best that we can do. Oxford University looked at weather records going back decades and found that the time the wind is too high or too low to generate electricity is negligible.
When wind resources are low more electricity will be generated by other means. Using water that was not used because the wind was blowing harder the month before, using coal that was not burnt for the same reason and so on.
Electricity companies are adept at using statistics to model how all forms of generation will behave and providing carious forms of backup to cover the likely failures. It is all explained din the UKERC report I have already referred to.
Who said anything about using wind for all electricity generation? Not me.