Yes, quite sure. However, the credits can only offset the "debits" from the times when you are a net importer from the grid (night, cloudy, etc). PG&E sends a

Yes, quite sure. However, the credits can only offset the "debits" from the times when you are a net importer from the grid (night, cloudy, etc). PG&E sends a once annual true-up statement where you pay for your excess annual kWh (assuming consumed kWh > produced kWh). If you are net exporter on an annual basis (produced kWh > consumed kWh) PG&E only pays wholesale rates for those at ~$0.04/kWh. They used to pay nothing if you were a residential net annual exporter, but after recent change in CA state law, they now have to actually cut you a check.