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