Pending Statewide before the Public Service Commission of Wisconsin.
The filing does not state a typical-bill impact we can verify. We will add one when the commission staff or the consumer advocate publishes it.
Next comes a hearing, then a decision from the Public Service Commission of Wisconsin. Many states give the commission a deadline of roughly seven to eleven months from filing. How rate cases work.
American Transmission Company wants to build a high voltage transmission line and substations across Fond du Lac, Ozaukee, Sheboygan and Washington counties, largely to connect the Vantage data center campus in Port Washington to the grid. On August 7, 2026 the Public Service Commission voided ATC's application after finding the company had made too many design changes during review; ATC refiled a redesigned application on September 12, 2026 for what it now calls the Ozaukee County Distribution Interconnection Project, dropping the earlier Trenton/Saukville route for a new south-east preferred route (with a south-west route through Fredonia as an alternate). The new cost estimate has grown to 2.48 to 2.72 billion dollars, potentially Wisconsin's most expensive single transmission project, with Vantage covering nearly all of it; the PSC review clock has restarted, with roughly a one-year approval timeline targeted.
What it means for your bill: Transmission upgrades like this are typically billed to every electric customer in the state through transmission charges, not just to the data center that made the new line necessary, which is why the cost allocation question matters for ordinary bills even outside the counties involved.
That has not been published yet; we will add it once the commission staff or the consumer advocate release a figure.
Not yet set. That is decided along with the case, usually as part of the commission's final order.
Not scheduled yet. Check back, or ask for an email alert below.
The Public Service Commission of Wisconsin accepts written comments on the docket while the case is open, and holds public hearings on major cases. Commission site.
The Public Service Commission of Wisconsin accepts written comments on the docket while the case is open, and holds public hearings on major cases. Commission site. Citizens Utility Board of Wisconsin represents households in this case.
One email when a rate case is filed, gets a hearing date, or is decided for Statewide. Nothing else.
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As filed, a typical residential bill would rise about 13 dollars a month in 2027 and 8 to 9 dollars more in 2028, a combined 16.3 percent, but how much of that is really tied to data centers versus other grid needs is one of the contested questions in the case.
As filed, a typical WPS residential bill would rise about 11.19 dollars a month in 2027 and 5.43 dollars more in 2028; nothing has been decided yet.
Nothing changes on home bills unless and until this tariff is approved, but its purpose is to keep future data center grid costs off residential rates.
If regulators approve it, Oracle would cover part of We Energies' nuclear power costs instead of spreading them to all customers, which the company says will lower everyone's fuel charges rather than raise them.