The Ratepayer Protection Act appeared headed for an easy congressional win as anxiety mounted over the electricity demands of AI data centers. The House passed the measure 417-3 on Wednesday, with even many progressives supporting it despite misgivings about its enforcement power.¹

On Thursday, Sen. Jon Husted, the Ohio Republican sponsoring the Senate version, sought unanimous consent to send the bill straight to passage. He argued that the rush of construction left little room for Washington to wait: America is expected to build the equivalent of 1,000 major data centers within five years, he said, and “we need to protect American ratepayers from footing the bill. The clock is ticking.”²

The bill would ask states to consider a model under which large data centers pay for the power generation, transmission and other grid upgrades their facilities require. But it would not compel states to adopt that model — the gap that turned broad House support into a Senate impasse.¹

Sen. Martin Heinrich, the New Mexico Democrat who leads his party on the Energy and Natural Resources Committee, blocked the request. With utility bills already rising in communities facing data-center development, Heinrich said voluntary state action would not deliver meaningful relief. “Rather than voluntary pledges or suggestions to states, Congress needs to pass real legislation with real teeth.”²

Heinrich instead urged consideration of his Grid Savings Act, which would require major electricity users such as data centers to cover connection and upgrade costs. Environmental and anti-data-center groups had made much the same argument, dismissing the House bill as a half-measure rather than a safeguard against costs being shifted to residents.²

Republicans cast the objection as a costly missed opportunity. Sen. Bernie Moreno of Ohio said the bill could have become law immediately and brought relief to electricity users nationwide.² But with the Senate due to leave Washington in two weeks, Heinrich’s demand for mandates over encouragement makes pre-election passage increasingly unlikely.

[1] Senate Democrat Blocks Immediate Passage of House-Passed Data Center Utility Rate Bill — House passage, the bill’s state opt-in structure and Heinrich’s case for mandatory payments.

[2] Bill to Curb AI Data Center Utility Costs Hits Snag in Senate — Husted’s urgency argument, Heinrich’s objection, environmental criticism and Moreno’s response.