Trump Signs Executive Order Ending Renewable Subsidies, Shifting U.S. Energy Policy Toward Fossil And Nuclear

On July 4, 2025, U.S. President Donald Trump signed an Executive Order officially terminating federal subsidies for renewable energy sources such as wind and solar, labeling them as "unreliable." This move is a critical part of implementing the "One Big Beautiful Bill Act" (OBBBA), which was enacted into law on the same day.

Clean Energy Tax Credit Restrictions and Possible Retroactive Disqualifications

Under the original provisions of OBBBA, wind and solar developers could still access clean energy tax incentives outlined in the Inflation Reduction Act (IRA), provided their projects either began construction within a year of the bill's passage or were operational by December 31, 2027. These conditions initially provided developers with some flexibility through the "Safe Harbor" mechanism, allowing early procurement of key components and acceleration of construction timelines.

However, the newly issued executive order directs the U.S. Treasury to rigorously implement the termination of production and investment tax credits (sections 45Y and 48E of the Internal Revenue Code) related to green energy projects. The order further instructs the department to develop detailed rules to phase out or amend the applicable credits and mandates stricter enforcement regarding Foreign Entities of Concern (FEOC), in line with OBBBA guidelines.

Shift in Federal Support from Renewables to Fossil and Nuclear Energy

Simultaneously, the U.S. Department of the Interior has been tasked with updating relevant policies and regulatory frameworks. These updates include removing wind and solar projects from fast-track approval and support programs, revoking their "preferred" status, and shifting federal priorities toward "reliable and dispatchable" energy sources such as nuclear power, fossil fuels, and emerging next-generation energy technologies.

Both the Treasury and Interior Departments are required to submit a joint report to the president by August 18, 2025. This report must outline their findings, detail the actions already taken, and propose future measures to ensure the executive order's full implementation.

In a public statement, the White House defended the move by asserting that "green energy subsidies pose national security risks by creating dependency on hostile foreign suppliers." It added that cutting large-scale support for intermittent power sources is vital to achieving energy dominance, enhancing economic security, and improving federal budget health.

Key Uncertainties Lie in How "Construction Start" Will Be Defined

How the Treasury redefines the term "construction start" will play a decisive role in determining which projects remain eligible under the current safe harbor provisions. As it stands, projects qualifying under sections 45Y and 48E enjoy a four-year window for completion. However, if the Treasury shortens this period or introduces new constraints, many developments already underway could lose eligibility for tax incentives.

FEOC Restrictions May Tighten Further-Even Retroactively

Abigail Ross Hopper, President and CEO of the Solar Energy Industries Association (SEIA), responded by expressing serious concern about the sweeping policy shift. She emphasized that predictability and policy stability are essential for long-term industry development and warned that such sudden reversals threaten both investor confidence and project viability.

Rhone Resch, former SEIA president and now head of consulting firm Advanced Energy Advisors, noted that the executive order could also sharpen definitions around FEOC criteria. He warned that the ownership threshold could drop from 25% to 10%, and that expanded scrutiny might extend to subcontractors and upstream suppliers. For example, even U.S.-based manufacturers using Chinese-made silicon wafers could be disqualified from receiving tax benefits. There is also speculation that the Treasury may introduce a "blacklist" system identifying disallowed suppliers or entities.

The firm also raised alarms over the possibility that new FEOC rules might be applied retroactively to projects initiated between 2022 and 2024 or those currently under construction but not yet complete.

Executive Order May Spark Legal Pushback

Ben Golin of the University of Nevada School of Law, writing in Jurist News, suggested that the executive order is likely to face legal opposition from environmental advocacy groups, renewable energy companies, and state governments. He outlined two main legal arguments: First, that the executive order could violate international trade agreements or WTO rules by discriminating against foreign suppliers; second, that rescinding approval and tax incentives may be deemed "arbitrary and capricious" under the U.S. Administrative Procedure Act, potentially rendering the action unlawful.

Michael Thomas of clean energy market platform Cleanview echoed these concerns on LinkedIn, warning that the executive order could lead to widespread project cancellations and may even threaten national grid reliability-especially as the U.S. struggles to meet its growing energy demands.