← Back to today's stories
Wisconsin PSC Votes Today on We Energies' First-in-Nation Data-Center Tariff — a Template the Utility Says Other States Will Copy
WI
Data Centers / Utility Regulation / Tariffs
April 24, 2026
Source: Milwaukee Journal Sentinel
The three-member Public Service Commission of Wisconsin convenes at 10:30 AM today at the Hill Farms State Office Building in Madison to rule on We Energies' proposed Very Large Customer (VLC) tariff — a special electric rate structure designed specifically for hyperscale data-center loads of 500 megawatts or more, by our calculation roughly the peak electricity demand of a mid-sized U.S. metro of 350,000–500,000 residents (using EIA load benchmarks; see Methodology for the comparison). The vote is the most consequential utility-regulatory decision the state will make this year, and We Energies has explicitly pitched the tariff as a template for other utilities and state commissions to adopt.
The tariff's proposal origin is the reason it matters nationally. We Energies filed the rate structure in March 2025 in partnership with Microsoft and Cloverleaf Infrastructure — the two data-center customers whose loads it would initially govern. Microsoft says its $3.3 billion first-phase Mount Pleasant campus will require 450 MW; Cloverleaf/Vantage's Port Washington project is a separate $15 billion, 45-generator campus also in the We Energies service territory — its diesel-generator air permits are the pollution-side fight running parallel to today's rate-side vote.
We Energies' framing: the separate rate “will prevent offloading of costs onto residents and other business customers.” The utility estimated data-center customers will pay approximately $1.88 billion in 2027 and 2028 combined — roughly a quarter of the company's electric revenue over the period, per We Energies' own arithmetic in the docket filing.
The opposition framing is on the record in equal volume. The docket received more than 2,100 public comments; per the Sierra Club of Wisconsin's docket analysis, 98.5% opposed the tariff as filed. 93% of verbal comments and 85% of written comments in the case said data centers should pay 100% of their costs — not the ~75%/25% split implicit in the current proposal. The Citizens Utility Board, Clean Wisconsin, and other consumer and climate advocates asked commissioners to strengthen the proposal rather than approve it as filed.
The underlying question is straightforward. A separate tariff for very-large-load customers is the single most cited policy mechanism for protecting residential and small-business ratepayers from data-center-driven infrastructure costs. The dispute is whether 75% cost recovery from data centers represents a meaningful protection or a political concession that leaves residential customers on the hook for the last quarter of a generation-and-transmission buildout measured in tens of gigawatts.
The three commissioners ruling today are Gov. Evers appointees. The decision is expected to issue as a vote today, with the formal written order following — possibly within days, possibly not until after the April 26 public-comment close on a related docket.
What You Can Do
Watch the outcome
The PSC open meeting is livestreamed; the recording posts to the commission's YouTube channel typically the same day. The written order will appear in the Electronic Records Filing system at apps.psc.wi.gov/ERF under docket 5-UR-112 and the VLC tariff docket.
If you live in Wisconsin
Whatever the commission rules today, the subsequent rate-case docket (We Energies' pending general rate case, also under 5-UR-112) is the venue where the tariff's cost-allocation details get operationalized. The Citizens Utility Board of Wisconsin (cubwi.org) represents residential customers before the PSC; Clean Wisconsin (cleanwisconsin.org) is the clean-energy intervenor. Both accept public comments and contact; both will be filing on the follow-on proceedings regardless of today's outcome.
If you live in a state watching Wisconsin as a template
Sixty utilities in 36 states are now developing or operating some version of a large-load tariff, per the Smart Electric Power Alliance's tracking. Wisconsin's ruling becomes the most-cited template nationally — both by utilities advocating for adoption and by intervenors arguing the model doesn't go far enough. Track how your state's commission cites today's order in its own large-load proceedings.
The Alliant Energy parallel case
The PSC is separately considering an Individual Contract Rate Agreement between Alliant Energy and Meta for a Beaver Dam data center. The commission required Alliant to re-file with fewer redactions after the initial application hid key details. That case is still open and takes public comments. Monitor via the same ERF system.
Contact your state's utility commissioners directly
Public utility commissioners in most states are either appointed by the governor (and subject to public scrutiny) or elected. Their decisions on large-load tariffs will determine how data-center costs are allocated for the 2027–2035 buildout. State-specific PUC/PSC processes vary significantly — verify how the comment and intervention rules work in your state before filing.
Community Takeaway
Today's vote is narrower than its framing. It is not a vote for or against data centers — Microsoft's and Cloverleaf's projects are already under construction. It is a vote on who pays for the grid the projects require.
The best-case reading: the commission adopts the tariff, making Wisconsin the first state with an explicit statutory mechanism directing data-center customers to cover the infrastructure costs they trigger, and setting a precedent every intervenor in every subsequent rate case nationally will cite.
The worst-case reading: the commission adopts the tariff as filed, with the 75%/25% cost-allocation structure, and the residual 25% — applied across hundreds of megawatts of new generation and tens of billions in transmission — becomes an ongoing wedge on residential bills that the tariff nominally prevents.
The most common reading is somewhere between: the commission approves with amendments. What matters is which amendments. The public-comment-driven push for 100% cost recovery has a specific technical mechanism — it requires the commission to rule that the marginal cost of serving a new 500-MW load is fully allocable to that load under existing rate-design principles. The utilities' position — that some degree of socialization is justified because data-center load provides economies of scale that benefit all customers — has its own established regulatory lineage.
Whichever framing wins the commission's reasoning today becomes the reasoning other states will cite tomorrow. Wisconsin PSC jurisdiction, rate-case procedure, and intervention rules are state-specific — the procedural posture of a similar case in Ohio, Virginia, or Texas will look different, and the outcome of the Wisconsin case will be cited in all of them with varying force. Verify how your state's PUC/PSC handles large-load tariffs before assuming this template applies as written.
Source: Milwaukee Journal Sentinel, April 24, 2026.