New Jersey's New Data Center Law Just Got Real. Regulators Have Until November 13th to Decide What 'Large' Means.

On the morning of November 4th, anyone who wants to tell New Jersey's Board of Public Utilities how to make data centers pay their share of the state's grid will get three minutes to do it. The meeting is virtual, it runs from 10 a.m. to noon, and written comments are accepted from anyone who can't attend at all. That isn't a lot of runway for a question this size: Public Service Electric & Gas, the state's largest utility, already serves 40 data center sites with 297 megawatts of combined summer peak demand, by its own count presented to PJM's load analysis subcommittee in September. The law meant to decide who pays for the next 40 is less than four months old, and the agency writing the actual rules just gave the public nine business days after that meeting to weigh in.

Governor Mikie Sherrill signed the Data Center Fair Share Act on July 7th, alongside two other energy bills that Sierra Club's New Jersey chapter publicly welcomed the same week. Formally P.L. 2026, c.32 — it started in the legislature as S731 — the law does something straightforward on paper: it creates a separate rate class for large data centers, so the cost of building and running the power infrastructure they need doesn't quietly land on everyone else's bill. Qualifying customers have to commit to a minimum bill covering at least 85% of the capacity they reserve, for at least ten years, and put up deposits before the utility builds new transmission on their behalf. During a system emergency, a qualifying data center gets curtailed before residential customers do, short of whatever gets carved out as critical load. None of that is unusual by national standards — Kentucky, Georgia, and a half-dozen other states have adopted some version of a minimum-bill-plus-curtailment structure for the same reason, which our own guide to how a large-load tariff works walks through in more detail. What's unusual is that New Jersey wrote it into statute instead of leaving it to a rate case.

The law exists because New Jersey residents already felt this fight in their bills before anyone wrote a statute. New Jersey Policy Perspective, a think tank, put out a report arguing that AI data centers accounted for nearly 70% of the growth in demand on the PJM grid and were a major driver of the roughly 20% rise in New Jersey electric rates that hit in mid-2025. A Rutgers analysis published the same week the RFI opened pushed back on how much of that is really data centers versus other cost drivers, titling its own piece, bluntly, "Mostly Not. Yet." Synapse Energy Economics, hired to model the broader package Sherrill signed, estimated it could save ratepayers more than $1 billion a year once fully in effect — a real number, attached to a law that, as of this week, still doesn't have a finished definition of who it applies to. PSE&G's own president has said publicly that the state needs to get these rules right if it wants to keep attracting data centers without raising bills for everyone else, which is a notably different position than fighting the law outright.

The fight over one word

Here's the part the bill signing didn't settle: what counts as a "large data center" in the first place. The Act gives the BPU twelve months from enactment, so until next July, to set the actual standards — definitions, interconnection rules, cost allocation, curtailment mechanics — before any utility can file its own tariff. On October 19th, BPU staff opened Docket No. EO26080463 with a request for information that reads less like a formality and more like an open question the legislature left for someone else to answer: how big does a facility have to be before it's "large"? What counts as common ownership or control when a developer splits one campus into several separately permitted buildings? Those aren't side issues. A definition drawn too narrow lets most of the load actually straining the grid keep paying ordinary commercial rates. A definition drawn too broad catches office buildings and hospitals that have nothing to do with AI.

Lawmakers already settled one version of this fight before signing. An early draft would have let regulators aggregate every separately permitted building under one owner almost without limit, and the New Jersey Business and Industry Association fought it until the bill was amended to require genuine 100-megawatt-a-month demand before that aggregation applies. NJBIA dropped to neutral once that changed. What that amendment didn't fix is how big a single, free-standing facility has to be before it counts as "large" at all — that number is one of the RFI's own open questions, left for the Board to answer instead of the legislature. The fight over aggregation is settled. The fight over the floor isn't.

Not everyone is waiting to see where that number lands before calling the law a win.

New Jersey just set a national precedent.Ari Matusiak, CEO, Rewiring America

Matusiak, who served on Sherrill's transition team, opened his statement with that line the day she signed the bill. His group's argument is that making large new energy users cover their own costs also frees up headroom, and dollars, for things like home electrification and rooftop solar, the kind of customer-owned energy resources Rewiring America has spent years pushing utilities to value. A Mid-Atlantic think tank that has been tracking data center costs made a plainer version of the same point in its own report: almost nowhere yet has a real mechanism to keep this kind of buildout off everyone else's bill, and New Jersey is one of the first states actually trying to build one before the bills show up, not after.

What's actually being tested here

I think the real test of this law has nothing to do with the signing ceremony, and everything to do with whether the BPU's eventual definition catches the load that's actually driving New Jersey's grid costs, not just the newest project with the biggest press release. PSE&G's 40 existing sites are the backdrop that makes this urgent. Those facilities didn't wait for a statute to get built, and whatever threshold the Board adopts will have to reach back and classify load that's already on the system, not just whatever gets proposed after the rule takes effect.

The clock here matters more than the headline. The BPU has until next July to finalize standards. Only then do PSE&G, Jersey Central Power & Light, and Atlantic City Electric each get 180 days to file their own tariff petitions, which puts an actual, enforceable, utility-specific large-load rate somewhere around early 2028 at the earliest, assuming nothing slips. In the roughly eighteen months between a governor's signature and a filed tariff, new data center interconnection requests in New Jersey are still being handled the way they always have been, under ordinary commercial service rules that were never built for a 297-megawatt customer.

On GridPermit's evidence ladder, everything in this story so far is a request for comment, not a rule. A signed 20-year power purchase agreement or a filed tariff sheet with an effective date ranks above a docket inviting the public to help define a word. That gap is exactly what the Kill Test is built to catch: a state with a real, signed statute can still leave a developer, or a utility, operating on assumptions about thresholds and aggregation that a regulator hasn't actually written down yet.

Watch two dates, not one. November 13th at 5 p.m. is when written comments on the RFI close, and it says something that a single virtual meeting and a two-week comment window make up the entire public process before BPU staff start drafting something binding. The date actually worth tracking is next July, when the twelve-month clock runs out and New Jersey finds out whether a definition written to survive a comment period also survives contact with the load it's supposed to cover.