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PJM Interconnection, the grid operator of the largest wholesale market in the U.S., requested this week that the Federal Energy Regulatory Commission (FERC) act by Nov. 3 on their compliance filing to allow energy storage resources to participate in the PJM wholesale market.

An Electric Storage Resource (ESR) is defined as “a resource capable of receiving electric energy from the grid and storing it for later injection of electric energy back to the grid.” ESRs are connected at transmission, distribution, or behind a customer meter.

PJM estimates that it currently has 5,300 MW ESRs in its market.

The FERC issued its landmark, unanimous, bipartisan Order 841 on February 15, 2018, directing regional grid operators to remove barriers to the participation of electric storage in wholesale markets. The order required regional grid operators to establish rules that open capacity, energy, and ancillary services markets to energy storage and affirmed that storage resources must be compensated for all of the services provided and moves toward leveling the playing field for storage with other energy resources.

Pursuant with Order 841, the regional grid operators submitted compliance plans in December of 2018 in preparation for a December 2019 targeted date. PJM has argued that it needs at least a month, after FERC acts on its compliance filing, to activate its ESR model.

However, other regional transmission operators (RTOs) and independent system operators (ISOs) have asked federal regulators for a delay from the one-year deadline. The Midcontinent ISO (MISO) wrote FERC in May requesting a delay to implement its energy storage market participation model by early 2021.

The Energy Storage Association asked FERC in March to provide a backstop deadline for the Southwest Power Pool’s implementation, and might respond similarly to open-ended implementation deadlines.

The next FERC commission meeting is Oct. 17, but the agenda has not been released.

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