Judge Restores Clean Energy Tax Credits for Wind, Solar

Thousands of wind and solar projects just got a lifeline thanks to a federal court decision that restores a critical funding pathway.

On June 6, 2026, U.S. District Judge Colleen Kollar-Kotelly vacated Treasury Department guidance that had eliminated the "5% safe harbor rule." This rule allowed renewable energy projects to prove they'd started construction by showing they'd spent at least 5% of total project costs, making them eligible for valuable tax credits.

The Treasury Department had removed this option in August, leaving many projects scrambling to meet stricter requirements before the July 4, 2026 deadline set by recent legislation. Without these tax credits, many wind and solar farms would become financially unviable.

Judge Kollar-Kotelly ruled that the Trump administration acted unreasonably in eliminating the pathway. She found officials failed to provide proper reasoning for treating wind and solar projects differently than other energy developments, violating standard administrative procedures.

The decision restores access to two major incentives: the 45Y clean energy production tax credit and the 48E clean energy investment tax credit. These credits help make renewable energy projects affordable and competitive.

The Ripple Effect

This ruling does more than save individual projects. It sends a clear signal that clean energy development has legal protections, giving investors and developers confidence to move forward with long-term plans.

The Natural Resources Defense Council, which sued to challenge the original guidance, called the decision part of "a string of defeats" for attempts to block new renewable energy projects. Communities that depend on these projects for jobs and cleaner air stand to benefit.

Legal experts caution that the government could appeal, and the tight timeline before the July 4 deadline creates uncertainty. Still, the door is now open for projects that had lost hope of qualifying.

Small solar facilities under 1.5 megawatts had never lost access to the 5% rule, but this decision restores it for the large-scale wind and solar farms that power entire regions. Clean energy just cleared a major hurdle on its path forward.