On 08/11/2017 12:34, Tim Streater wrote:
In article , Chris Hogg
wrote:

On Wed, 08 Nov 2017 10:43:38 +0000, Tim Streater
wrote:

In article ,
" wrote:

They work exactly as you expect charging up when electricity is
cheap and
discharging when it is expensive. They have the advantage of instant
power
delivery. There are some large existing facilities around the world
with a
modest output (100MW or thereabouts) acting as giant UPS's for remote
regions.

100MW for how long?

And are they really going to be equipped with partially knackered
rechargeable batteries from old electric cars? The mind boggles!

And how many battery cells would be required for anything substantial?
And how would maintenance be done for such a large pack, which is also
going to be a fire hazard par excellence if one of the partially
knackered rechargeable batteries eventually overheats? Would you like
to be in the middle of such a pack, doing battery cell replacement,
when it goes off?

Or is this just another hand-waving piece of b/s?

And why wouldn't the knackered EV batteries have their materials
recycled to avoid having to mine and process even more raw materials for
the increasing number and all the replacements?

SteveW