PJM would develop rules for including advanced energy storage technologies in its ancillary services and capacity markets under a problem statement given first read at the Markets and Reliability Committee meeting Thursday.

Although pumped hydro participates in PJM markets, the RTO has no rules for advanced technologies such as batteries, flywheels, thermal storage and compressed air, a representative of the Electric Storage Association told MRC members.

MRC will be asked to vote on the problem statement next month.