The U.S. Interior Department has ordered construction to stop on Ørsted’s Revolution Wind farm, an $8 billion project under development roughly 15 miles south of Rhode Island. The move, issued late last week without public explanation beyond unspecified national-security concerns, idled work crews after 45 of the project’s planned 65 turbines were installed—about 80 percent of the build-out. The halt imperils electricity supplies for some 350,000 homes in Rhode Island and Connecticut and threatens roughly 1,000 union jobs, according to ISO New England and the North America’s Building Trades Unions. The regional grid operator said its near-term reliability assessments assume the 704-megawatt facility comes online next year; delaying it “will increase risks to reliability.” Democratic officials intensified pressure on Washington on Monday. Connecticut Governor Ned Lamont said there is “a deal to be had” with the Trump administration and has begun talks with the Interior and Energy departments. Rhode Island Governor Dan McKee visited the project’s logistics base in North Kingstown, while Senator Richard Blumenthal of Connecticut called the stop-work order “blatantly illegal” and predicted a court fight. Several House Democrats urged the White House to rescind the decision, warning of higher electricity prices and lost climate-policy momentum. The dispute unfolds as the Commerce Department opens a Section 232 national-security investigation into imported wind-turbine components. Capstone analysts estimate prospective tariffs of 25 percent to 50 percent could lift input costs for new offshore projects by about 10 percent and raise their levelised cost of energy by 4 percent, adding to uncertainty for developers already reeling from the Revolution Wind suspension.