As filed, a typical residential bill would rise about 13 dollars a month in 2027 and 8 to 9 dollars more in 2028, but how much of that is really tied to data centers versus other grid needs is one of the contested questions in the case.
Tracker
Pending rate cases in Wisconsin
Ranked by what each would add to a typical monthly bill if approved as asked. Commissions usually approve less. Cases without a published residential figure sit at the end.
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.
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 four counties involved.
Recent decisions
Meta says the contract means other Alliant customers will not pay for the energy used by its Beaver Dam data center, though consumer advocates say the secrecy around the deal makes that hard for the public to independently verify.
This tariff does not change home electric rates by itself, but it is meant to make large new data centers pay the full cost of the power plants and lines built to serve them instead of spreading those costs across everyone's bill.