Pennsylvania PUC Opens Review of Data Center Rates, Curtailment Rules
The Pennsylvania Public Utility Commission voted unanimously on Sept. 11 to launch two regulatory reviews, one on emergency curtailment rules and data center cost allocation, another on ratemaking transparency, Utility Dive reports.
Market Impact
The PUC’s action follows an August report projecting 18.56% industrial load growth in Pennsylvania over the next five years, driven primarily by PPL Electric Utilities Corp.’s large-load forecast, even as overall electricity usage declined from 2024 to 2025. The commission cited a system-wide reliability shortfall of 6,831 megawatts identified in PJM’s July 2026 capacity auction for the 2028-29 delivery year as a key driver behind the review.
“The combination of rapid load growth and tightening resource adequacy conditions requires us to carefully examine whether our existing regulatory framework is sufficient for the challenges ahead,” PUC Vice Chair Kimberly Barrow said. PUC staff will present a tentative order on curtailment framework updates at the commission’s Oct. 1 meeting, with a vote targeted for Jan. 28, 2027, after a public comment period. Separately, a fall technical conference will examine how costs tied to new large loads get allocated, including impacts on customers not driving that demand. A Ratemaking Working Group will also review whether return on equity issues can be handled through sector-specific cost-of-capital proceedings instead of individual rate case litigation, and whether ROE for Distribution System Improvement Charges could move to a formula-based calculation.
What It Means for Subcontractors
- Electrical and substation contractors bidding PJM-territory work should track the Oct. 1 PUC meeting, where staff present a tentative curtailment order, since new load-management rules could change interconnection sequencing and emergency shutdown protocols for data center clients.
- Firms serving PPL Electric Utilities’ service territory should prepare for accelerated grid buildout tied to the 18.56% five-year industrial load growth forecast, which points to upcoming generation, transmission, and substation packages.
- Contractors working on utility rate-recovery-funded infrastructure, including Distribution System Improvement Charge projects, should watch the Ratemaking Working Group’s review of ROE calculation methods, since a shift to formula-based ROE could affect how quickly utilities greenlight capital projects.
- Companies bidding data center power infrastructure should plan for the fall technical conference on large-load cost allocation, which will shape whether data center customers or the broader ratepayer base fund new interconnection capacity, directly affecting project economics and client budgets.
- Stakeholders wanting a seat on the Ratemaking Working Group have a 30-day nomination window once the PUC formally publishes the order in the Pennsylvania Bulletin, with full membership announced 15 days after that window closes.
