PJM May Force Data Centers to Curtail Demand to Protect Ratepayers

The largest regional grid operator in the United States is considering a policy that would compel data centers to periodically reduce their electricity consumption, aiming to shield ordinary ratepayers from surging power costs. The move, which targets the rapidly growing energy appetite of the technology sector, could reshape where and how data center operators connect to an already strained grid.

PJM Interconnection, which oversees the wholesale electricity market spanning 13 states and the District of Columbia, has seen a surge in interconnection requests from hyperscale data center developers. As artificial intelligence workloads and cloud computing drive unprecedented demand, utilities warn that without intervention, residential and small business customers could bear the burden of billions of dollars in grid upgrades and higher wholesale prices. The proposed curtailment mechanism would require data centers to voluntarily or mandatorily dial back power usage during peak periods, effectively treating them as flexible loads rather than baseload consumers.

Industry analysts say the policy, if implemented, could deter some technology firms from expanding operations on the PJM footprint, particularly those that require near-constant uptime for latency-sensitive applications. While data center operators have long relied on backup generators and battery storage to manage short-term interruptions, mandatory curtailment would introduce a new layer of operational risk. At the same time, the grid operator must balance reliability with affordability, as more than a quarter of PJM’s projected peak demand growth over the next decade is expected to come from data centers.

The potential regulation reflects a broader tension across the United States, where aging transmission infrastructure struggles to keep pace with the digital economy’s energy needs. Other grid operators, including the Electric Reliability Council of Texas and the Midcontinent Independent System Operator, have also explored demand-response programs tailored to large industrial users. For PJM, the challenge is acute: it already faces capacity market concerns and rising costs for new generation resources, and adding data center load without demand management could accelerate price spikes for millions of households.