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Comment by Johnny555

I couldn't make the math work on home battery storage. The difference between peak and non-peak is 37 cents, so if I shift 5KW of usage from peak to non-peak, that's $675/year in power savings, but the cost to install a whole house system that could shift my home's peak usage would be in the $10,000 range.

If my next EV can act as a battery for the house, that may shift the economics since I'd have a "free" 80KWh+ battery (and inverter? Not sure if the car acts as an inverter too), so would only be paying for the wiring.

As far as I know, my utility won't buy back power at peak rates, the best I could get is a credit to offset my power usage, which only makes sense if I have solar (which is not simple since I live in a condo without a lot of roof area even if I could get permission for solar)

parent Johnny555 2 years ago

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