Sun Prairie WI 12-month large data center moratorium (2026)

Sun Prairie, Wis. (Dane County) — 12-MONTH MORATORIUM ON THE DEVELOPMENT OF LARGE DATA CENTERS approved by the City Council on a Tuesday in 2026. THE SIZE QUALIFIER IS UNRESOLVED AND IS THE PRINCIPAL GAP: the source says 'large data centers' without stating a threshold in square feet, megawatts or acreage. The indexed comparators show how much turns on that number — Bemidji MN one-year data center moratorium (2026) (>10,000 sq ft, plus crypto at any size), Lawrence County IL two-year data center moratorium (2026) (>10,000 sq ft), Plymouth MN interim ordinance, data centers over 50,000 sq ft (2026) (>50,000 sq ft, this wave), Marion County FL 12-month large data center moratorium (2026) ('large-scale', with exemptions for smaller facilities and a dissent arguing the exemption threshold was set far too high). THIS ENTRY MUST NOT BE CITED FOR ANY THRESHOLD. DURATION AGAINST THE WISCONSIN FRAMEWORK: Wisconsin moratorium practice is generally understood as an initial term of UP TO 12 MONTHS WITH ONE 6-MONTH EXTENSION. A 12-month initial term is AT that ceiling and is the conservative position. Contrast Sauk County WI 18-month data center moratorium (2026), an 18-MONTH TERM ADOPTED IN A SINGLE ENACTMENT, which that entry flags as sitting at the outer edge of the same framework — the two Wisconsin measures took different views of the same constraint and are worth reading together. WISCONSIN CLUSTER, NOW SUBSTANTIAL: Sauk County WI 18-month data center moratorium (2026) (18 months, county board 27-1, pre-emptive with no pending project); and in the unwritten queue Oshkosh (Common Council temporary moratorium ordinance), Milton (18-month, with State Sen. Mark Spreitzer (D-Beloit) addressing the Common Council ahead of its approval), St. Croix County (unanimous, with reporting that a smaller data center in HAMMOND led to packed village board meetings AND AN ONGOING LAWSUIT), and the Village of Tigerton (deferred, moratorium advancing). The ledger also records Town of Turtle, Town of Beloit, Town of Rock, Rock County and the City of Janesville as unindexed leads from the same cluster. NOT ESTABLISHED: the vote, the exact date (only 'Tuesday'), the ordinance number, the threshold defining 'large', the operative scope (applications, permits, construction), and whether any project was pending.