A US federal judge has allowed Danish offshore wind developer Ørsted to resume work on its almost completed Revolution Wind project, which the Trump administration halted along with four other projects.

The government’s attorneys had argued that the suspension of the project’s lease was justified by new, classified information regarding offshore wind’s impact on national security. The Pentagon revealed this information in November of last year.

US district judge Royce Lamberth rejected the argument that national security concerns justified halting the project, which would be harmed beyond repair by such an action.

The judge even asked DOJ attorneys if they intended to stop everything in place, costing the project $1.5m a day, until the administration decides what to do.

Revolution Wind attorneys stated the government’s pause had violated federal laws governing administrative procedure and due process, adding that the developer had not been able to review the classified assessment on offshore wind.

Ørsted’s Revolution Wind lawsuit is only one of several filed by both offshore wind companies and states seeking to reverse the December 22 suspension of five offshore wind leases over what the government claimed were national security concerns. The company also has an ongoing lawsuit over its Sunrise Wind project off the coast of New York.

The Danish firm beat the US government over work stop orders on this project for the second time. The project, located off the coast of Rhode Island, was ordered in August 2025 to stop all ongoing activities pending a review to address unspecified concerns raised by the Department of the Interior. A judge lifted the stop-work order the following month.

Revolution Wind, a 50-50 joint venture between Ørsted and Skyborn Renewables, is approximately 87% complete, has already installed all offshore foundations and 58 of 65 wind turbines. Export cable installation is complete, and both offshore substations have been installed. At the time of the lease suspension order, the project was expected to begin generating power as soon as January 2026.   

This hearing was the first of three preliminary injunction hearings that will be held this week in lawsuits looking to put offshore wind projects back on track. The other two are for Equinor’s Empire Wind and Dominion’s Coastal Virginia Offshore Wind.