Signed August 11, the order directs city departments to produce new data center regulations within 90 days and, in the interim, applies heightened scrutiny across several fronts: air pollution permitting, noise rules for data center equipment, and a broader vetting process weighing water consumption, electricity demand, and neighborhood impact. The Johnson administration says it will work with the City Council to advance legislation establishing a temporary moratorium on new facilities and on material expansion of existing ones.
Chicago matters because of scale and signal. Previous moratoriums clustered in rural counties and mid-sized cities where a single hyperscale campus can dominate the local grid and tax base. A moratorium push in the third-largest U.S. city, in a state that has actively courted data center investment through tax incentives, indicates the politics have shifted in dense urban markets as well.
The County-Level Wave Continues
Chicago is the headline, but the base of the movement keeps widening. Alamance County, North Carolina approved a one-year moratorium to research potential impacts before further development proceeds. Spartanburg County, South Carolina delayed a final vote on a proposed twelve-month moratorium until September 21. Both followed the pattern now familiar from Parselion's tracking: a public hearing, a commission sympathetic to development but wary of moving without standards, and a pause adopted to buy time for guidelines.
Notably, the Alamance commissioners were described as broadly favorable toward data centers. The moratorium was framed not as opposition but as breathing room to write rules for an industry arriving faster than local ordinances can accommodate. That framing is spreading, and it is more durable than outright opposition because it is harder for developers to argue against.
Three Layers of Pause
The moratorium landscape now operates on three levels simultaneously. At the state level, New York's Executive Order 62 has halted permits for facilities of 50 MW or more. At the municipal level, Chicago and Seattle have moved. At the county level, dozens of jurisdictions have adopted or are weighing pauses. A single project can encounter friction at any of the three, and increasingly at more than one.
Parselion's assessment: the practical consequence is not that the buildout stops but that site selection becomes a regulatory due diligence exercise rather than a real estate and power exercise. Developers who screen jurisdictions for ordinance maturity, adopt community benefit frameworks proactively, and engage before filing will move materially faster than those who discover local sentiment at the first public hearing.