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Dive Brief:

The PJM Interconnection’s independent market monitor on Friday urged the Federal Energy Regulatory Commission to require a Mara Holdings subsidiary to pledge to keep the output from a 522-MW power plant it plans to buy in the grid operator’s markets.

Allowing Mara to sell electricity from the gas-fired Long Ridge power plant in Hannibal, Ohio, to data centers would harm PJM ratepayers at a time when power supplies *within the grid operator’s footprint*delete* are tight, according to Monitoring Analytics. “The transaction should not be approved without a commitment from Mara not to remove the Long Ridge capacity and energy from the PJM markets to serve data center load,” PJM’s market monitor said.

Mara, however, plans to continue selling power from the Long Ridge power plant into PJM’s markets, according to the company. Any new data centers developed at the site would be paired with new generation, Fred Thiel, the company’s chairman and CEO, said during a call with equity analysts on April 30, the day the deal was announced.