PVTIME – According to analysis from Wood Mackenzie, revised federal permitting rules and withdrawn public funding have forced the cancellation or suspension of 7GW of renewable energy developments on US federal land in 2025. A further 12GW of projects on federal land and 80GW of projects on private land now face regulatory jeopardy, putting more than USD 121 billion of clean energy investment at risk.
The consultancy’s report, Federal Headwinds: Permitting Risks for Large-Scale US Renewable Assets, attributes these issues to longer, more rigorous inter-agency assessments prompted by a July 2025 guidance memorandum issued by the US Department of the Interior. Kaitlin Fung, a senior research analyst at Wood Mackenzie, notes that wetland compliance consistently creates regulatory challenges for solar, wind, and battery storage projects, with private land sites in Oregon, Alabama, Maine, Minnesota, and Montana being the most affected. Wind assets additionally face distinct limitations around airspace clearance. Since 2025, multiple GW of pre-construction capacity across all three technologies have been halted, with supply chain pressures and constrained financing acting as secondary contributory factors to some project withdrawals.
Wood Mackenzie’s quantitative modelling has identified that 30% of pipeline solar projects are subject to additional regulatory checks. Meanwhile, wind capacity has the highest exposure at 62%, excluding developments covered by existing Federal Aviation Administration moratoriums. Over 25% of planned storage capacity will be subject to increased compliance scrutiny. Updated permitting protocols require supplementary federal oversight for 32% of all announced, under-construction, and approved pre-construction assets. Developments on federal land scheduled for commissioning in 2029 carry the greatest risk of delayed commercial operation and potential loss of tax credit eligibility, with concentrated exposure in Texas, California and Arizona.
Limited regulatory mitigation has since materialised. In April 2026, a federal court issued a preliminary injunction halting the newly expanded review obligations for wind and solar infrastructure on the grounds that these measures may breach the Administrative Procedure Act. While this ruling cannot clear existing review backlogs, it does prevent the expansion of restrictive oversight processes. In December 2025, the US House of Representatives passed the Permitting Simplification and End Excessive Delays Act, which is still subject to further legislative scrutiny. The draft legislation seeks to narrow environmental assessment remit, streamline cross-agency coordination, and set fixed statutory deadlines for regulatory decisions.
Gaby Ackermann Logan, a research associate at Wood Mackenzie, notes that permitting bottlenecks remain a primary barrier to the delivery of renewables. Without consistent, harmonised procedures, unpredictable, disjointed review frameworks will continue to disrupt construction timelines and discourage investment. Co-deployed solar and storage assets face compounded delays due to inconsistent regulatory standards. Those able to forecast evolving compliance risks are better placed to protect project schedules and secure viable financing amid rapid regulatory shifts.
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