MA: National Grid to integrate battery storage into solar program


The DPU has approved National Grid’s proposal to include integrated battery storage in its Phase II Solar Program. The DPU deemed National Grid’s cost estimates reasonable, and allowed Nationals Grid to include the costs in the pre-approved cost-recovery mechanism for the program. The solar cost adjustment provision (SCAP) tariff has been amended accordingly.

The Phase II Solar Program authorizes National Grid to spend up to $84.9 million in ownership costs and $1.0 million in annual operation expenses, and to receive cost recovery (with a cost cap of $97.6 million). The approved program allows National Grid to procure up to 20 MW of solar facilities owned and operated by the utility on its property or on property owned by a third party. The program supports solar PV systems that range in capacity from 60 kW to 1 MW.