PJM Grid Prices Surge 76% as Watchdog Blames Data Centre Demand

Wholesale electricity prices on the PJM Interconnection grid, the largest in the United States, have risen by 76 per cent over the past year, reaching $136.53 per megawatt-hour. The surge, which represents a near doubling from the $77.78 recorded at the same time last year, has drawn intense scrutiny from Monitoring Analytics, the independent market monitor for the region. The watchdog attributed the spike primarily to surging demand from data centres, particularly in Northern Virginia, a hub for artificial intelligence infrastructure.

Monitoring Analytics released a report stating that the price impacts on customers are "very large and are not reversible." The monitor warned that costs would likely increase further in the near term unless the issues associated with data centre load are addressed promptly. The report explicitly noted that without the rising demand from these facilities, the capacity market would not have experienced the tight supply-demand conditions or the high prices currently observed.

The independent monitor criticised PJM Interconnection for failing to adequately manage the load and for delaying necessary software upgrades. According to the report, these upgrades have been postponed by multiple years with no firm implementation date. Monitoring Analytics also highlighted a lack of transparency in decision-making, arguing that the grid operator bungled its response to the surging demand rather than addressing the root cause.

PJM’s operational history has come under fire, with the report noting that the grid operator paused applications for new generating sources in 2022 due to a backlog, only recently resuming them. This pause occurred just as data centre construction was ramping up. Monitoring Analytics stated that the current supply of capacity in PJM is inadequate to meet the demand from large data centre loads and will remain so in the foreseeable future.

The crisis has sparked debate over the future of the grid’s design. PJM recently released a white paper examining three paths forward, but the proposals were rejected by AEP, one of the region’s largest utilities, which has threatened to leave the grid. Monitoring Analytics similarly dismissed the white paper, suggesting PJM was using the crisis as a pretext to tear up its power market design, which the monitor described as remaining robust. The report concluded that the solution starts with recognising data centre load as the source of the current issues.