The offshore wind stop-work orders, and what the courts said

A stop-work order is one of the more powerful levers a federal agency holds over a permitted project. It does not revoke a lease or cancel an approval — actions that trigger their own legal processes and compensation questions. It simply tells a developer to stop, immediately, while a project is mid-construction. For a project with vessels chartered, crews mobilized, and cable being laid on the seabed, a pause is not neutral. It burns money every day it lasts, and it can run long enough to break a project’s financing without the government ever having to defend a formal cancellation in court.

That is the lever the Interior Department reached for in December 2025. Over the following five months, federal courts took it back.

December 22: five projects halted

On December 22, 2025, the Bureau of Ocean Energy Management (BOEM), a unit of the Interior Department, issued stop-work orders to five offshore wind projects then under construction off the East Coast: Empire Wind 1 and Sunrise Wind off Long Island, Revolution Wind off Rhode Island, Vineyard Wind 1 off Massachusetts, and the Coastal Virginia Offshore Wind commercial project. Together the five represent roughly 5.8 gigawatts of generating capacity — when complete, enough to power well over two million homes (Offshore Wind).

The stated basis was national security. Interior cited “national security risks identified by the Department of War in recently completed classified reports,” pointing to the potential for large wind turbines to interfere with military radar (E&E News). Several of the projects were well advanced. Empire Wind was more than 60 percent complete; Coastal Virginia was producing electricity from completed turbines.

The national-security framing was not incidental. National-security determinations are the kind of executive judgment courts have historically been most reluctant to second-guess. If the rationale held, it would have given Interior a durable, hard-to-review reason to keep the projects frozen.

January–February: five projects, five reversals

All five developers sued, and every project secured a court order allowing construction to resume.

The first and most closely watched ruling came on January 12, 2026, when Judge Royce Lamberth of the US District Court for the District of Columbia — ruling from the bench — reinstated work on Revolution Wind (CT Mirror). Lamberth had already overturned an earlier suspension of the same project in 2025; this was the second time the administration’s halt of Revolution Wind failed in his courtroom.

His reasoning is the core of the legal story. Under the Administrative Procedure Act, an agency action is unlawful if it is “arbitrary and capricious” — if the agency fails to give a reasoned explanation connecting the evidence to the decision. Lamberth found that BOEM had not done so. The classified material the government cited, he concluded, did not constitute “a sufficient explanation for the bureau’s decision to entirely stop work” on a project that had been years in development and had already been reviewed by defense officials and BOEM itself. The judge also noted public statements by administration officials — including interviews in which Interior Secretary Doug Burgum discussed offshore wind’s cost and wildlife impacts, subjects unrelated to radar or national security — as evidence that the stated rationale did not match the apparent motive (Sierra Club).

The pattern held across three federal districts. Judge Carl Nichols, also of the District Court for the District of Columbia, granted a preliminary injunction for Empire Wind on January 15; a District of Columbia court cleared Sunrise Wind on February 2. A judge in the Eastern District of Virginia cleared Coastal Virginia on January 16, and a judge in the District of Massachusetts cleared Vineyard Wind 1 on January 27 (Harvard EELP). In each case the courts reached the same conclusion: an agency may not invoke a classified national-security label as a substitute for the reasoned explanation the law requires. Judges reviewed the underlying classified materials and found the asserted threat did not support a total construction halt.

That multiple judges, reviewing five separate cases independently, arrived at the same result is itself part of the story. It suggests the defect was not in any single project’s record but in the orders themselves.

April: the appeals that did not come

Interior could have appealed the rulings. Burgum initially said the department would (E&E News). It did not. By early April 2026, the deadlines for appealing the five stop-work injunctions had lapsed, leaving the district court orders in place and clearing all five projects to proceed to completion (Electrek).

Two explanations have been offered, and they are not mutually exclusive. The first is legal: a national-security justification that the government was unwilling to defend on appeal was, in the view of some observers, a justification it did not expect to win on. The second is political: a bipartisan group of senators had been negotiating a long-stalled energy permitting-reform bill, and Senator Sheldon Whitehouse of Rhode Island had signaled that the negotiations would collapse if Interior pressed its appeals. Letting the deadlines pass removed that obstacle (Grist).

April 21: the broader permitting freeze, enjoined

The stop-work orders were the most visible front, but not the only one. Since January 2025, a series of executive orders and agency actions had restricted federal permitting for wind and solar projects generally — not just the five under construction.

On April 21, 2026, Judge Denise Casper of the US District Court for the District of Massachusetts granted a preliminary injunction halting five of those actions (Crowell & Moring). They included a July 2025 Interior memo requiring multi-tier secretary-level review of wind and solar permitting decisions; a block on renewable developers’ access to the federal database used for Endangered Species Act consultations; an Interior land order directing officials to favor projects with higher “capacity density,” a metric that disadvantages wind and solar; a parallel Army Corps directive on Clean Water Act permits; and a May 2025 legal opinion restricting offshore wind under the Outer Continental Shelf Lands Act. Casper found each likely arbitrary and capricious — “an unreasoned, unexplained departure from prior practice” — and concluded that singling out renewable energy for slower review harmed the public interest in a reliable, affordable grid. Industry filings had documented roughly 57.2 gigawatts of capacity delayed or canceled by the restrictions.

The mechanism, and the limit

The through-line is the Administrative Procedure Act. Stop-work orders, review memos, and prioritization directives are all administrative actions, and the APA requires that administrative actions rest on a reasoned explanation. An agency is free to weigh national security, radar interference, or grid economics — but it must show its work, connect its evidence to its conclusion, and not use a label to paper over a motive the record does not support. That is what every one of these rulings found missing.

The limit is that none of these decisions is final. Preliminary injunctions hold while litigation continues; the underlying cases can still be fought, and the broader pause on new wind authorizations remains on appeal to the First Circuit. The same restraint that protected these five projects could, in a better-documented case, sustain a future restriction. And the deeper vulnerability is structural: a project that is permitted but not yet built remains exposed to executive levers like the stop-work order, which impose real cost long before any court can rule on whether the order was lawful.

What to watch

• The First Circuit appeal of the broader wind-authorization pause — the one appeal Interior did not abandon.
• Whether the five cleared projects reach completion without further administrative interference now that the stop-work injunctions are final.
• The Senate permitting-reform negotiations, whose survival was reportedly tied to Interior standing down on appeals.
• New agency actions that attempt to achieve the same restriction with a fuller record — the APA bars unreasoned decisions, not unwelcome ones.

The courts spent five months establishing that an agency cannot stop a permitted project simply by asserting that it must. That is a meaningful constraint. It is also a narrow one: it polices how a decision is made, not whether the next one can be made to stick.