In message , at
00:07:52 on Wed, 2 Jul 2008, Tom Anderson
remarked:
on DC, you need banks of resistors as well because putting it back to
the grid if there isn't a conveniently placed train to take it is Too
Bloody Hard.

But there are places to send it other than the grid, surely? Supercaps?
Pumped storage? Flywheels? A giant laser firing into space?

How about a plant that's generating hydrogen by electrolysis. That
wouldn't need a steady flow of current, and could simply absorb whatever
was available from one second to the next. Then use the hydrogen to
power those buses they have. Or did that experiment end now?
--
Roland Perry