Iowa Senator Chuck Grassley wants “begin construction” to mean what it means.
To that end, Grassley has placed a “hold” on three nominees to the Treasury Department, the agency tasked with writing the rules and guidance for implementing the tax provisions of the One Big Beautiful Bill Act, many of which depend on that all-important definition.
Grassley and other Republican senators had negotiated a “glidepath for the orderly phaseout” of tax credits for renewables, the senator in a statement announcing the hold, giving developers until July 2026 to start construction on projects (or complete the projects and have them operating by the end of 2027) to qualify for tax credits.
Days after signing the law, however, President Trump signed an executive order calling for new guidance on what exactly starting construction means. The title of that order, “Ending Market Distorting Subsidies for Unreliable, Foreign Controlled Energy Sources,” has generated understandable concern within the renewables industry that, as part of a deal to get conservative House members to support the bill, the Treasury Department will write new guidance making it much more difficult for wind and solar projects to qualify for tax credits.
“What it means for a project to ‘begin construction'’ has been well established by Treasury guidance for more than a decade,” Grassley said. Under these longstanding definitions, “beginning construction” can mean undertaking “physical work of a significant nature,” which can include or buying certain long-lead equipment or components like transformers. Another way to qualify for the credits is to spend 5% of the total cost of the project.
A more restrictive interpretation of “begin construction,” however, could turn the tax credit language into a dead letter, especially when combined with the rest of the administration’s full-spectrum legal assault on renewable energy.
Grassley said that new guidance is expected within two weeks, and that “until I can be certain that such rules and regulations adhere to the law and congressional intent, I intend to continue to object to the consideration of these Treasury nominees.”
Grassley has a long history with production tax credits for wind energy, playing a pivotal role in their extension in 2015. “As the father of the first wind energy tax credit in 1992, I can say that the tax credit was never meant to be permanent,” Grassley said at the time. “The five-year extension for wind energy brings about the best possible long-term outcome that provides certainty, predictability and a responsible phase-down of a tax incentive for a renewable energy source.”
Almost 60% of Iowa’s electricity is generated by wind turbines, the highest proportion of any state, according to Energy Information Administration data.
Utah Senator John Curtis has joined Grassley in placing a hold on nominees, delaying their vote before the whole Senate, according to Politico’s Joshua Siegel. Grassley and Curtis, alongside Lisa Murkowski of Alaska and Thom Tillis of North Carolina, were unable to get a meeting with the Treasury Department to discuss the guidance, Siegel reported.
