Originally Posted By: boxer

*There's a hollow mountain in Wales that pumps water up and, when the peak demand arises, releases it back down to generate electricity, I don't know of any other storage method, but if we're going to rely on wind power, we desperately need to think of one!

The UK has 3 large pumped storage stations, two in Wales and one in Scotland.

There are other large scale storage options, including flow batteries, compressed air, fly wheels, hydrogen generation etc

Most of them still need some work though.

http://en.wikipedia.org/wiki/Grid_energy_storage
_________________________
Remind me to change my signature to something more interesting someday