Netmetering?

Net metering is a billing arrangement that allows solar system owners to receive credits for the excess electricity they generate and send back to the grid. When your solar panels produce more electricity than you need, the surplus is automatically fed back into the grid. The utility company then credits you for the excess energy, which can offset or reduce your future electricity bills.

Existing Net metered Customers: Generally credited to customer's next bill at retail rate (except avoided-cost rate for micro-CHP and fuel cells); excess for residential PV and wind and farm-based biogas is reconciled annually at avoided-cost rate; excess for micro-hydro, non-residential wind and solar, and residential micro-CHP and fuel cells carries over indefinitely Phase One transition tariffs: Credits carried over to the next monthly billing period, and over annual periods, however unused credits will be forfeited at the end of the contract.