Earlier quoted context omitted.
It's a bit more complicated than that, too. I don't know about NV, but in California the power company never actually buys net power from you. At best you can owe $0, you never get a check from the power company, even if you pump all of your juice to the grid. So it's only paying "retail prices" insofar as it's offsetting the retail prices you're paying for your overnight/cloudy day power. And incidentally, overnight…
You can get compensated, but doing so is opt-in. You have to fill out a form.
So there's the whole story. They do not refund your credit balance at the end of the year.
Rates: http://www.pge.com/en/myhome/saveenergymoney/plans/tiers/ind...?