> Where do you live that electricity is that expensive during the day and arbitrage rate is that high to create a thousand dollars a year in savings? I live in

> Where do you live that electricity is that expensive during the day and arbitrage rate is that high to create a thousand dollars a year in savings? I live in the US, where the federal government subsidized half the system cost (at least when I installed it) via tax credits. I save about a 100 bucks a month on electric, since I can charge my car at night at a discount, which requires a special meter enabled by the system.