US blocks all offshore wind construction, says reason is classified

December 23, 2025

TL;DR

The US Department of the Interior has paused leases for all five offshore wind sites currently under construction.
The pause is attributed to a classified Department of Defense report citing national security risks.
Several projects have already made significant construction progress, with some nearing completion.
This action follows previous attempts by the administration to halt offshore wind projects, which faced legal challenges and were often overturned.
Affected states and project developers, who have invested heavily, are likely to oppose the decision and explore legal options.
The classification of the Defense Department's report makes it difficult to ascertain the specific risks and challenge the decision.

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