Wisconsin PSC approves Alliant–Meta data center service agreement, orders new large‑load tariff and reporting safeguards

May 7, 2026

The Public Service Commission approved Alliant Energy’s individual contract (ESA) to serve Meta’s proposed 220 MW Beaver Dam data center, directing the utility to file a standalone large‑load tariff for 100 MW+ customers and imposing reporting, credit and consumer‑protection conditions designed to prevent cost shifts to existing customers.

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The Wisconsin Public Service Commission on May 7 voted to approve an individual contract rate service agreement allowing Wisconsin Power and Light (Alliant) to serve a proposed 220‑megawatt hyperscale data center to be built by Degas LLC, a Meta subsidiary, in Beaver Dam, subject to a package of conditions meant to protect existing customers and increase transparency.

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