Mayor Brandon Johnson signed an executive order on Tuesday, August 11, 2026, that establishes new regulations and imposes a temporary moratorium on the development of data centers within Chicago. The action marks the city’s first formal step toward tighter oversight of the sector.
The order directs municipal agencies to create a set of oversight procedures that will apply to all current and future data‑center projects. Under the new rules, developers must secure additional permits, submit detailed site and environmental plans, and undergo a city‑wide review before construction can proceed. The temporary moratorium halts the approval of any new data‑center proposals until the oversight framework is fully operational.
City officials cited the rapid expansion of data‑center facilities in recent years as the driver for the measure. They noted that the growth has raised concerns about energy consumption, land use, and the need for consistent regulatory standards. By instituting a pause, the administration aims to assess the cumulative impact of existing and planned centers and to align development with broader city planning goals.
The moratorium does not affect data‑center projects already in the permitting process, which will continue under the new review criteria. Existing facilities will remain operational while the city finalizes the oversight guidelines. Officials indicated that the temporary halt will give planners time to evaluate best practices and to engage stakeholders on issues such as power demand and community impact.
The mayor’s order is expected to be reviewed periodically, with the possibility of lifting the moratorium once the oversight system is deemed effective. The move places Chicago among the few U.S. municipalities that have taken formal steps to regulate data‑center growth, reflecting a growing focus on technology infrastructure management.