The “devil is in the detail” when it comes to making regulatory changes in the US to open up wholesale markets for energy storage to participate in, a regional chief of regulator FERC has said.

UK energy regulator Ofgem has published guidance outlining how developers and asset owners can add storage to their subsidised solar installations without losing accreditation to the Renewables Obligation (RO) and Feed-in Tariff (FiT).

Moves by the US’ Federal Energy Regulatory Commission (FERC) to assess electricity storage’s potential role in wholesale markets and in maintaining a low-cost, reliable network have been welcomed by the Washington-headquartered Energy Storage Association.