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Because the powerwall allows you to "buy" power at the opportunity cost of $0.02/kWh vs paying up to $0.32/kWh ? If you end up generating a lot of excess solar
by nimish 7y ago
Because the powerwall allows you to "buy" power at the opportunity cost of $0.02/kWh vs paying up to $0.32/kWh ? If you end up generating a lot of excess solar using a lot of grid power at peak times, it could pay for itself.
But of course, you need to do the calculation for your situation.
- boringg 7y agoI don't think powerwall has that functionality. At least original powerwalls only provided backup power. From a C&I perspective this is one of the sources of revenue for batteries - however there are many different ways for electricity charges to be passed on to customers. It isn't only kWh.
- benj111 7y ago"I don't think powerwall has that functionality" From wikipedia "When originally announced in 2015, two models of Powerwall were planned: 10 kWh capacity for backup applications and 7 kWh capacity for daily cycle applications" https://en.m.wikipedia.org/wiki/Tesla_Powerwall https://en.m.wikipedia.org/wiki/Tesla_Powerwall I take it the daily cycle applications include that functionality.