Oracle Corporation (ORCL) faces a significant hurdle in its artificial intelligence expansion after Wisconsin’s Public Service Commission (PSC) declined to revisit a rule that could force the company to post more than $7 billion in financial collateral for its planned data center in Port Washington. The regulatory decision, reported on July 21, 2026, sent Oracle’s stock down 3.98% to $121.38.
The dispute centers on a tariff from utility We Energies that applies to “very large customers.” Under that tariff, any data center developer with an S&P credit rating below A- must provide collateral — in cash or a letter of credit — to cover the cost of power plants and transmission lines built exclusively for their facilities. Oracle’s rating was recently downgraded by S&P Global Ratings to BBB-, two notches below the required A- threshold. Because the nearly one-gigawatt Port Washington project is a cornerstone of Oracle’s $300 billion computing supply contract with OpenAI, the collateral demand adds heavy financial strain to an already costly AI buildout.
Oracle has asked a county judge to strike down the requirement and argued that the rules impose disproportionate financing costs. In a court filing, an Oracle executive stated the company would “almost certainly” need a letter of credit for the full amount, but noted that no single bank could issue such a large guarantee, forcing reliance on a consortium of institutions. The annual cost of the collateral alone is estimated to exceed $100 million.
Regulators maintain the rule protects local electricity consumers from shouldering the risks of expensive AI-related grid expansion. The Citizens Utility Board defended the tariff, pointing to similar requirements in Ohio and Indiana. Oracle, however, remains hopeful that the commission will reconsider, citing the project’s $15 billion investment and significant job creation. The company is simultaneously pursuing a judicial review in Ozaukee County Circuit Court.
