Federal Regulators Reject Grid Operator's Plan to Restrict Power for Large Data Centers

2026-10-13 economy

Washington, Monday, 12 October 2026.
On October 9, 2026, federal regulators rejected PJM Interconnection’s plan to mandate energy curtailment for data centers, ruling that the power grid operator improperly infringed on state authority.

Jurisdictional Boundaries and Regulatory Overreach

The Federal Energy Regulatory Commission’s decision on October 9, 2026, fundamentally alters the landscape for grid interconnection in the mid-Atlantic region [1]. FERC determined that PJM Interconnection’s proposed Interim Resource Adequacy Service (IRAS) framework improperly placed obligations directly on retail customers, a domain reserved for state regulatory authority [1][4]. The commission found that the proposed tariff provisions appeared to dictate which retail customers would be curtailed during system stress, effectively establishing a retail rate without state approval [4][5]. FERC Commissioner David Rosner emphasized that states must play a crucial role in designating which customers face curtailment when the system is stressed [1]. This ruling reinforces the division between federal wholesale market oversight and state-level retail rate jurisdiction, preventing the grid operator from unilaterally imposing curtailment priorities on large loads like data centers [5].

Market Implications for Power Producers

Equity analysts suggest the rejection of the IRAS framework may sustain higher capacity prices in the near term, benefiting independent power producers [1]. Companies such as Constellation Energy, NRG Energy, Talen Energy, and Vistra are positioned to gain from a market construct that maintains scarcity signals without the proposed large-load restrictions [1]. Jefferies equity analysts noted that while uncertainty remains within PJM’s market rules, the development is positive for existing generation assets [1]. However, FERC Commissioner Rosner warned that excluding interconnection loads from the capacity auction demand curve could mask capacity shortages, potentially leading to involuntary load shedding despite market signals showing sufficient capacity [5]. This tension highlights the delicate balance between maintaining reliability signals and preventing economic inefficiency in the capacity market [5].

Data Center Demand Realities

Recent data indicates a significant recalibration in projected electricity demand from the technology sector. Monitoring Analytics, PJM’s independent market monitor, reported that 4,016.9 MW of data center load has been canceled or delayed as of September 21, 2026 [6]. This figure represents 42% of PJM’s projected growth between the 2026/27 and 2028/29 delivery years, suggesting the anticipated strain on the grid may be less severe than previously forecasted [6]. Removing this canceled load reduces PJM’s capacity gap by 55% to 3,055.0 MW, which significantly alters the economic justification for emergency procurement [6]. Under the original design, capacity costs at the price cap would total approximately $1.4 billion annually, but with the revised gap, costs would be approximately $620 million annually, representing a potential annual cost reduction of 0.78 billion [6].

Regulatory Next Steps and Deadlines

The U.S. Department of Energy has filed a statement supporting FERC’s recommendations, urging PJM to submit revised tariff provisions by October 29, 2026 [2][3]. The DOE emphasized that large electricity users should pay for the generation and infrastructure needed to serve their demand, aligning with the administration’s Ratepayer Protection Pledge [2][3]. While the IRAS framework was rejected, FERC approved the Large Load Registry and the definition of large loads as 50 MW or more, which became effective on October 12, 2026 [5][6]. This registry will serve as an information and planning tool, requiring Load Serving Entities to report data on location, peak MW, and backup generation [6]. PJM must now navigate these regulatory requirements while addressing the evolving paradigm of state-led curtailment rules and updated load forecasts [5][7].

Sources

Data Centers Grid Infrastructure