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A comment on Powerwall 2 and Integrated Solar. Parent comment

Re:Powerwall 2 and Integrated Solar by closeparen on Sunday October 30, 2016 @12:17AM (#12828136)
It's much, much better to burn fossil fuels for heat than to burn fossil fuels to spin turbines, transmit the electricity long distances, and then run it "back" through heating elements. Stages one and two are pretty lossy.

Particularly when electricity is from coal and natural gas power plants, using it for heating is a staggeringly bad idea.

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Re:Powerwall 2 and Integrated Solar by ZeroGravitas on Sunday October 30, 2016 @08:45AM (#12829475)
True, but electric powered heat exchangers can give a 2-8x advantage since it's not generating the heat, just moving it from one place to another.
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