Farmington Electric, a municipal utility, offers net metering to residential customers with systems up to 10 kilowatts (kW) in capacity. This option is available for photovoltaic (PV), wind, hydro and other (unspecified) non-carbon-based fuels. Any customer net excess generation (NEG) is credited to the customer's next monthly bill at the utility's retail rate. Accounts are trued-up at the end of the calendar year. At this point, the customer has the option of either receiving a payment for any remaining NEG or carrying the credits forward.