Under Ohio's net-metering law, electric distribution utilities must offer net metering to customers who generate electricity with renewable sources like solar, wind and more. At present, there is no statutory size limitation on net-metered systems. But the Public Utilities Commission of Ohio determined that a limitation is implied by the statute, because a net-metered system is made to offset only part or all of a customer’s electricity needs.

Ohio requires net-metered customers to use a single, bidirectional meter. Net excess generation by net-metered customers can credit their generation toward future months. At the end of a 12-month period the system owner may request refunds for excess generation.

Before attempting to connect to a utility’s grid with a net-metered system, the system owner must submit an interconnection agreement and receive approval for the system from the utility. The utility provides interconnection agreements for interested parties.