Dave Liquorice wrote:
On Sun, 7 Dec 2008 07:31:41 -0800 (PST), John Nagelson wrote:

So why not store the energy as gravitational potential energy?

If you have the space pumped storage might get you a bit of energy but
you'd probably get 50% back.


about 70% at Dinorweg.

Probably best just to dump any electricity you have no immediate need for
into a heat store/bank via emersion heaters, once the store is up to
temperature sell the excess to the grid.

If heat is what you want.

Low grade heat - electricity is the worst efficiency of anyhting.