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Executive Order No. 658 · Sep 8, 2026

Establishing Requirements for Responsible Data Center Development and Operations in Massachusetts to Protect and Support Ratepayers, Communities, and the Environment

Issued by Governor Maura Healey. Massachusetts Register No. 1583.

In brief

What it does: The Department of Environmental Protection (“MassDEP”), the Energy Facilities Siting Board (“EFSB”), the Massachusetts Environmental Policy Act Office (“MEPA”), and other relevant permitting-related agencies shall not issue any permits or authorizations associated with any data…

Why: Demand for data storage, processing capabilities, and computational tasks is increasing and is leading to the expansion of data centers across the country and development proposals in Massachusetts.

In the order’s own words, shortened. The full text is on mass.gov.

Read the order on mass.gov

From the Trial Court Law Libraries’ list of governors’ executive orders on mass.gov, as published there. Any order that later changes this one is listed there too.