"Selling back to the utility"
"Selling back to the utility" depends on location. And it's complicated. In my case, each month, CL&P simply balances KWH produced vs. KWH consumed, and keeps a running total. So that is full value "net metering". However, I believe that CL&P, will only pay "avoided wholesale cost" if I generate a surplus after each year. One can argue about subsidy and value and cost, that's not why I did this. I believe cleaner power and cleaner cars are essential to the well being of the planet. I will do what I can afford. If I get a subsidy, I can do more, and the planet is better off. I'm saving now for that electric car (maybe in another year or two). Because, I expect to generate a surplus at the end of the first year, and if that surplus is valued at wholesale cost, it's better for me to use it instead of selling it.