Pennsylvania Moved to Cut Data Centers First in a Grid Emergency

The Pennsylvania Public Utility Commission voted 4-0 on October 1 to advance a tentative order that would deny data centers critical-load status during a grid emergency and put large new loads without secured capacity in line to be cut before other customers. The order, at docket M-2026-3064961, rewrites the state's emergency load control procedures and would also require electric distribution companies to set up procedures for identifying large-load customers and notifying them when a reduction is coming. Comments are due 30 days after publication in the Pennsylvania Bulletin, with 15 more days for replies, and the commission expects to take a final vote on January 28, 2027.

The numbers behind it are Pennsylvania's own. State industrial load is forecast to grow 18.56 percent over five years, driven largely by PPL Electric Utilities' projections, and PJM's July 2026 capacity auction came back with a system-wide reliability shortfall of 6,831 megawatts for the 2028-29 delivery year. The commission already set the companion rule in May. Its final order at docket M-2025-3054271, issued May 13, established a model tariff framework for customers above 50 megawatts individually or 100 megawatts in aggregate, with deposits and collateral, ramping schedules, minimum contract terms and exit provisions meant to keep stranded costs off other ratepayers.

What changes on the job is the ride-through. A load that can be curtailed first and cannot claim critical status has to carry its own power for longer than a battery bridge, which pushes work into onsite generation, paralleling switchgear, automatic transfer and the load-shed controls that drop non-essential branches on a utility signal. The notification requirement adds metering and communications tie-ins at the service so the utility and the customer are reading the same thing. None of that is new electrical work in kind. It is more of it, on jobs that were being designed around a firm utility feed.

The licensing path for that work in Pennsylvania runs through city hall, not Harrisburg. The state issues no electrician license at all. Each of its roughly 2,560 municipalities sets its own requirements, and Philadelphia, Pittsburgh and Allentown each run separate electrical credentials with their own journeyman and master tiers. A contractor staffing a curtailment retrofit at a Pennsylvania campus qualifies crews jurisdiction by jurisdiction while hiring against a narrower skill: generator paralleling, medium-voltage switching and commissioning experience that holds up at an acceptance test.

Nothing is settled yet. A tentative order is a proposal, and the comment cycle runs before the January vote, with a technical conference on November 17 taking up who pays for the infrastructure large computational loads trigger. Design decisions will get made ahead of the ruling anyway, because the 50-megawatt tariff is already guidance for utility filings and developers are pricing secured capacity against it now.

Pennsylvania is not blocking data centers. It is telling them to bring their own backup, and the backup is electrical work.