A new independent report says electricity costs on the nation’s largest grid have surged nearly twofold in a year, and it points squarely at one driver: expanding demand from data centers. Monitoring Analytics, the market monitor for the PJM system, warned yesterday that the spike exposes gaps in the grid’s ability to absorb heavy, concentrated loads at a time when computing demand is accelerating.
Wholesale power settled at roughly $136.50 per megawatt-hour in the latest 12-month comparison, up from about $77.80 a year earlier — a jump first reported by Crain’s Chicago Business and confirmed by the monitor’s analysis. The report argues that these higher prices are not simply cyclical and could persist unless the underlying causes are addressed.
The findings single out data centers as the principal source of the new strain. In Monitoring Analytics’ view, the extra load from large computing facilities tightened supply margins in PJM’s capacity market and pushed clearing prices sharply upward. The group said that, absent this growth in data center demand, the market would not have experienced the same level of scarcity or the same price spike.
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Power prices jump 76% on US largest grid: watchdog blames market failures
- Consumers: Higher wholesale prices typically filter through to retail rates over time and increase costs for businesses that buy power in competitive markets.
- Grid operators: PJM faces pressure to modernize tools and processes to handle rapid, concentrated demand growth.
- Utilities and generators: Investment decisions are now being weighed against uncertain market design changes and potential departures from the grid by major utilities.
- Data center operators: Their expansion is central to the problem, creating questions about siting, demand management and contributions to grid upgrades.
PJM’s history with resource interconnection adds context. In 2022 the operator paused new applications for connecting generation because of a multi-year backlog; only recently did it begin accepting new requests again. At the same time, regions served by PJM — notably Northern Virginia, a national hub for data centers — have seen large increases in electricity consumption tied to cloud and AI workloads.
Monitoring Analytics did not limit its critique to load growth. The report took aim at PJM’s decision-making and technology roadmap, saying planned software upgrades have been postponed repeatedly and that the operator has not been sufficiently transparent about how it reached key choices. Those delays, the monitor argues, have left the market ill-equipped to respond to the current surge in demand.
Last month PJM published a white paper outlining three possible directions for the grid’s future. That paper failed to win unanimous support; American Electric Power has even threatened to withdraw from the PJM footprint if reforms proceed in a way it sees as unfavorable. Monitoring Analytics, for its part, cautioned against using the current disruption as a rationale for wholesale market redesign, maintaining that the market’s fundamentals remain sound and that the immediate issue stems from concentrated data center loads.
What happens next matters for reliability and prices. If capacity remains tight and demand from large computing facilities continues to rise, market participants and regulators are likely to face tougher choices about where to site new generation, how to accelerate interconnection timelines, and whether to impose new terms on large customers that create system stress.
In short, the report frames the situation as a policy and planning problem as much as a market one: the grid that underpins a fast-growing digital economy must be both transparent and agile enough to match evolving load patterns, or consumers and businesses will continue to feel the consequences.
