PJM grid power prices surge 76% amid data center demand

Wholesale electricity prices on the PJM Interconnection, the largest electrical grid in the U.S., nearly doubled over the last year, rising 76%. PJM is a regional transmission organization that coordinates wholesale electricity across 13 U.S. states and the District of Columbia. According to a report published yesterday by Monitoring Analytics, the independent market monitor for the PJM grid, wholesale prices for one megawatt-hour (a unit of energy measurement) of electricity rose to $136.53, up from $77.78 at the same time last year. The report, first covered by reporting outlet Crain’s Chicago Business, blamed the price spike on data centers and PJM’s failure to handle their surging demand adequately, asserting that the grid operator bungled its response to surging demand.

This price surge highlights a fundamental tension: the U.S. power grid was not designed for the electricity demands of an AI-driven economy. Monitoring Analytics reported that the current supply of capacity in PJM is not adequate to meet the demand from large data center loads and will not be adequate in the foreseeable future. The independent market monitor warned that the consequences for consumers are already severe, writing that “the price impacts on customers have been very large and are not reversible.” It added that these price impacts will grow even larger in the near term unless the issues associated with data center load are addressed in a timely manner.

The watchdog pointed to PJM’s lack of transparency in decision-making and for delaying much-needed software upgrades as key drivers of the crisis. These delays occurred alongside historical bottlenecks; in 2022, PJM paused applications for new generating sources to address a multi-year backlog, even as data center construction accelerated. This demand is heavily concentrated in Northern Virginia, an area dense with data centers. While PJM recently released a white paper proposing future paths for the grid, the options have failed to satisfy key stakeholders. AEP (American Electric Power), a major U.S. utility company, has threatened to leave the PJM grid entirely. Monitoring Analytics also dismissed the white paper, arguing that the core elements of the PJM market design remain robust and that the grid operator is using the crisis as a pretext to alter its market structure rather than addressing the root issue of data center load.

Why it matters

The U.S. power grid was not designed for the electricity demands of an AI-driven economy, and the gap between what the grid can deliver and what the industry needs is widening.