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The bigger factor is that he's renting, and therefore whether the jurisdiction has net metering or not doesn't matter.

But he's in San Francisco and California does not have net metering. I've been considering doing something like this as any grid-tied system is about $3/W for power, plus $500/kWh for storage. But an off-grid system done on your own is about $0.60/W plus $200/kWh for storage.

Wow, California’s NEM 3.0 seems absolutely horrible. I hope it gets repealed.

It’s also a major pain in the ass in places where the grid isn’t exactly prepared for that. My parents are allowed to sell power from their EV installation. Their neighbor, who built a much smaller one a few months later, got denied.

I pity the poor linemen if you hook this contraption to feed back into the grid.