Wisconsin (WI) data center power coverage
Real, sourced large-load tariff and interconnection research on file for Wisconsin — never inferred, never scraped, never implied beyond what's actually been checked.
Large-load tariffs
We Energies (Very Large Customer tariff)
Threshold100 MW or more of energy demand
StatusWisconsin PSC decision of April 24 2026 approved the VLC tariff with changes: minimum initial term of 15 years; data centers pay 100% of generation costs (capacity-only option removed); transmission cost-shift safeguards; added reporting. Threshold lowered from 500 MW to 100 MW.
Contract termMinimum initial term of 15 years (PSC decision of April 24, 2026)
RampNot stated in the filings we read
Take-or-pay (minimum bill)Not stated in the filings we read
CollateralNot stated in the filings we read
Exit feeNot stated in the filings we read
Notice to reduce or endNot stated in the filings we read
Time to powerNot stated in the filings we read
SourceWisconsin PSC press release, April 24 2026: https://psc.wi.gov/Documents/PressReleases/04.24.2026PressRelease.PDF
Xcel Energy / NSP-Wisconsin (Wisconsin) -- Very Large General Time of Day service, pending
ThresholdProposed: about 100 MW or more (reported for Xcel Wisconsin); other utilities not confirmed
StatusXcel 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).
SourceEEI list, Sept 2026 (docket numbers); newprojectmedia.com coverage of the Xcel filing; Data Center Knowledge on the We Energies decision. Dockets not read.
Wisconsin Power and Light / Alliant (Wisconsin) -- Large Load Power Service, pending
ThresholdNot confirmed (the filing was not read; Xcel Wisconsin proposed about 100 MW and the We Energies decision set 100 MW)
StatusWisconsin Power and Light / Alliant (Wisconsin) -- Large Load Power 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.
SourceEEI list, Sept 2026 (docket numbers); newprojectmedia.com coverage of the Xcel filing; Data Center Knowledge on the We Energies decision; Clean Wisconsin press release, May 7, 2026 (Meta / Alliant). Dockets and orders not read.
Madison Gas and Electric (Wisconsin) -- Very Large Customer tariff, pending
ThresholdNot confirmed (the filing was not read; Xcel Wisconsin proposed about 100 MW and the We Energies decision set 100 MW)
StatusMadison Gas and Electric (Wisconsin) -- Very Large Customer tariff, 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.
SourceEEI list, Sept 2026 (docket numbers); newprojectmedia.com coverage of the Xcel filing; Data Center Knowledge on the We Energies decision. Dockets not read.
Interconnection & regulatory guidance
Utility-specific — no statewide guidance resolves without naming a utility, but real tariff research exists above for We Energies (Very Large Customer tariff) and Xcel Energy / NSP-Wisconsin (Wisconsin) -- Very Large General Time of Day service, pending and Wisconsin Power and Light / Alliant (Wisconsin) -- Large Load Power Service, pending and Madison Gas and Electric (Wisconsin) -- Very Large Customer tariff, pending. Interconnection process for a specific utility can be confirmed directly once that utility is identified for your site.
Land-constraint screening
Every Kill Test automatically screens against 6 nationwide land-constraint layers, Wisconsin included — no state-by-state gaps here.
FEMA Flood ZoneNearby WetlandsProtected / Conservation LandCritical HabitatSeismic HazardTribal Land
Related reporting
Wisconsin Added 10,500 Construction Jobs This Year. About Half of Them Trace Back to Data Centers.
← Back to full coverage
Evaluating a specific parcel in Wisconsin?
Start a Qualification Review