You'll get rebates on your electric bill, per se, in the form of lower bills, of course, but we also have a true up once a year. PG&E keeps track of your usage and has some formula of what they think you should be using. Then once a year they figure out how much money you should get back. It's complicated enough that I don't readily understand it. We got about $600 back this year, using 3 power walls and about 7 Kw of solar. Call PG&E and have them 'splain it to you.