Offshore wind energy entered crisis mode this week after the Interior Department, acting on an order from President Trump, suspended wind farm leases in federal waters, halting construction and in some cases power generation at major projects along the East Coast. The move, justified by national security concerns cited in classified Pentagon reports, represents the most disruptive federal intervention the sector has faced since offshore wind development began accelerating nearly a decade ago.
The suspension affects five large-scale projects that, taken together, were expected to supply electricity to roughly 2.5 million homes:
- Vineyard Wind 1, now delivering power to the Massachusetts grid
- Coastal Virginia Offshore Wind, backed by Dominion Energy
- Revolution Wind
- Sunrise Wind
- Empire Wind
All five projects are located in federal waters, placing them under Interior Department lease authority.
National Security rationale:
Administration officials said the suspension is necessary to evaluate national security risks outlined in classified Defense Department assessments. While the classified findings remain undisclosed, officials also pointed to unclassified government research showing that offshore wind turbines – particularly their massive rotating blades – can interfere with radar systems used for military surveillance, aviation safety, and coastal monitoring.
Defense concerns related to offshore wind are not new. For years, the Pentagon has raised questions about radar clutter and sensor interference.
Relevant Paragraphs from the Order:
This withdrawal temporarily prevents consideration of any area in the Outer Continental Shelf for any new or renewed wind energy leasing for the purposes of generation of electricity or any other such use derived from the use of wind. This withdrawal does not apply to leasing related to any other purposes such as, but not limited to, oil, gas, minerals, and environmental conservation.
Nothing in this withdrawal affects rights under existing leases in the withdrawn areas. With respect to such existing leases, the Secretary of the Interior, in consultation with the Attorney General as needed, shall conduct a comprehensive review of the ecological, economic, and environmental necessity of terminating or amending any existing wind energy leases, identifying any legal bases for such removal, and submit a report with recommendations to the President, through the Assistant to the President for Economic Policy.
Sources: President Trump Jan. 20, 2025 memo; and, Dynamic Global Insights
