Why we need it – and how hard it is
I mentioned in my recent IET talk that the supply of electricity to the grid is likely to become increasingly variable as wind generation grows, and because as net energy importers we are increasingly dependent on foreign energy outside of our control. We don’t worry about this problem too much with gas because we can store it relatively easily in giant gasometers. If we could store electricity too that would be a huge help in de-stressing our electricity grid (and its engineers!).