OT-ish: "Powerwall" - will change the way the world uses energy
On 03/05/15 11:08, tim..... wrote:
"Roger Mills" wrote in message
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On 02/05/2015 11:13, Bob Minchin wrote:
There are better ways of storing/using excess solar power by heating
water especially if you are already using electric water heating.
But it's not storing it in the sense of being able to convert it back
to usable electricity easily and efficiently - so it doesn't compare
with a battery and inverter.
and it would take a pretty big tank to use the summer sunshine to heat
water for my winter heating :-)
I did the calcs on that actually. It really isn't as big as you might think.
A tank of hot water the size of a house, underneath it is probably enough
tim
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