Oracle drops lawsuit over Wisconsin rules that shield utility customers from data center debt

Oracle moved on Monday to voluntarily dismiss the lawsuit it filed in June against the Wisconsin Public Service Commission, ending its court challenge to credit rating requirements the commission attached to electric service for very large data centers. Wisconsin Watch reported that the company’s attorneys filed the motion early Monday morning in Ozaukee County Circuit Court, where the case was before Judge Sandy Williams.

The requirements now stand unchallenged. In May the commission approved a specialized rate structure for We Energies’ largest data center customers that, among other things, requires operators to pay for the construction of new power plants built to meet their demand. Because a new plant can cost hundreds of millions of dollars, and unpaid debts tied to those plants could fall on the utility’s other customers if a data center operator became insolvent, the commission set an A- credit rating threshold for data center operators seeking service from We Energies. Companies rated below that threshold must post collateral in cash or lines of credit. Wisconsin Watch reported the requirement could cost Oracle more than $100 million a year in financial security payments.

Oracle is one of three companies behind the Port Washington campus, along with OpenAI and the data center developer Vantage Data Centers. The three said in October that they plan to invest more than $15 billion in the site, which will hold four data center buildings. Vantage is seeking a connection of 1.3 gigawatts, which Wisconsin Watch compared to the demand of roughly a million Wisconsin homes. We Energies, the state’s largest investor-owned utility, faces a tentative late-2027 deadline to meet the campus’s needs.

In its June filing Oracle asked the court to “set aside, reverse, and remand” the credit requirements, arguing they were not needed to prevent harm to We Energies’ other customers or shareholders and that they could dissuade other companies from operating in Wisconsin. The commission responded last month by accusing Oracle of seeking “to overturn over one-hundred years of established caselaw” and to “dictate one-off preferential terms of service.”

Oracle held a BBB rating from S&P Global Ratings when the commission adopted the standards. On July 9 the agency lowered Oracle to BBB-, the lowest tier it treats as investment grade, citing the capital demands of the company’s artificial intelligence infrastructure business and its contractual exposure to OpenAI. The company’s rating remains below the A- threshold. We Energies chief executive Scott Lauber told investors on a recent quarterly earnings call that the credit requirements pose no threat to the project’s viability, according to Wisconsin Watch.

Tom Content, executive director of Wisconsin’s Citizens Utility Board, said the group had expected the outcome. “We were confident the PSC would win and that the consumer protection safeguards the CUB team sought would remain in place,” he said. “CUB believes the safeguards the PSC established are critical to protect We Energies customers from the risks of tech companies overextending their borrowing, calling into question the long-run solvency of those companies.”

Clean Wisconsin spokesperson Amy Barrilleaux said the safeguards “could be used as a blueprint in other parts of the state.” Madison Gas and Electric is awaiting the commission’s input on its own data center rate structure, which would also require developers rated below A- to post collateral, with smaller requirements for companies rated BBB+ than for those at BBB or below.

Wisconsin’s rules sit inside a national shift in how state utility regulators treat the electricity demand of AI data centers. According to the Edison Electric Institute, as of May 2026 twenty-three states had approved at least one large load tariff and another seven had proposals pending, figures compiled by Columbia Law School’s Climate Law Blog. Such tariffs set the rates and connection conditions for the largest customers and can require them to cover the incremental cost of serving them.

Virginia’s State Corporation Commission approved a large load tariff for Dominion Energy in 2025 that will automatically cover customers demanding 25 megawatts or more starting January 1, 2027, requiring minimum 14-year contracts, payment for 85% of contracted transmission demand and 60% of contracted generation demand, and collateral worth $1.5 million per megawatt of capacity. Ohio’s Public Utilities Commission approved a tariff filed by AEP Ohio in 2025 covering data centers with monthly maximum demand of 25 megawatts or more, requiring them to pay for at least 85% of contracted capacity and to sign contracts of at least twelve years. Columbia’s post notes that AEP’s large-load forecast then fell by half. Minnesota enacted HF 16 in June 2025, which directs the state Public Utilities Commission to create a “very large customer” rate class and allocate all attributable costs of service to it.

Legislatures have moved in the same direction. MultiState reported that more than 300 data center bills were filed in more than 30 states in the first six weeks of 2026, following more than 200 bills in more than 40 states in 2025, and that lawmakers in at least eighteen states introduced more than 30 bills aimed at large load customers. The Columbia post also notes that the electricity data centers use may be generated with fossil fuels, and describes clean transition tariffs as a mechanism regulators can pair with large load tariffs to assign the cost of new generation to the customers driving the demand.

The end of Oracle’s lawsuit does not resolve the Port Washington project’s remaining regulatory steps. The commission has ordered the American Transmission Company, which is responsible for connecting the campus to the grid, to restart the six-month application process for the transmission lines and substations the site requires, citing design changes the utility made after review began. The company has a December 2027 deadline to connect the site and has not announced a change to its timeline.