Energy storage companies “have suffered significant and detrimental harm” from changes to rules governing the frequency regulation market in US regional transmission organisation (RTO) PJM Interconnection’s service area, the Energy Storage Association has said.

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.

A programme to re-configure New York’s energy networks, including a comprehensive evaluation of energy storage, could provide “valuable lessons” for other parts of the world, according to the New York Battery and Energy Storage Technology consortium (NY BEST).