Xcel Energy / NSP-Wisconsin (Wisconsin)
Large-load tariff for data centers: what is on file, the terms the filings state, and where each fact comes from. Terms a filing does not state are marked, never guessed.
StatusPending Last reviewed 2026-10-14
Applies atProposed: about 100 MW or more (reported for Xcel Wisconsin); other utilities not confirmed
What the filing saysXcel Energy / NSP-Wisconsin (Wisconsin) -- Very Large General Time of Day service, pending: PENDING, NOT APPROVED. Three filings follow the We Energies decision (April 24, 2026: 100 MW threshold, 15-year minimum term): Xcel Wisconsin 4220-TE-119 (Very Large General Time of Day service, 100 MW or more, reported 15-year initial term, requested approval by Feb 1, 2027); Madison Gas and Electric 3270-TE-124 (Very Large Customer and Bespoke Resources tariffs); Wisconsin Power and Light 6680-TE-119 (Schedule Cp-3 Large Load Power Service with an electric service agreement). Terms for MGE and WPL were not found. Expect them to resemble the We Energies decision, but that is not confirmed. Separately, Clean Wisconsin reported on May 7, 2026 that the PSC approved a modified version of Alliant's special contract with Meta for the Beaver Dam data center and ordered Alliant to file a tariff proposal for data centers over 100 MW, so future large data centers there would be served under a standard tariff rather than individual contracts (advocacy-group press release; contract terms, docket and filing deadline not stated; the PSC order was not read).
Stated terms
This tariff does not yet have terms we can tabulate. The status text above is what the filings and our source state. See the source below.
Source
EEI list, Sept 2026 (docket numbers); newprojectmedia.com coverage of the Xcel filing; Data Center Knowledge on the We Energies decision. Dockets not read.
Compare with other utilitiesEstimate the commitment in dollarsCheck a site in Xcel Energy / NSP-Wisconsin (Wisconsin) territory
Get an email when this changes
Other utilities in Wisconsin
Screening information from public filings, not legal or investment advice. Tariffs change; confirm the current terms with the utility and the commission before relying on them.