FTZ 129: Corvus Energy Expands Its U.S. Battery Strategy

FTZ News: 12 days after withdrawing an earlier application involving maritime battery equipment, Corvus Energy USA Ltd. has returned to the same Foreign-Trade Zone in Washington state with a new proposal centered on energy storage systems, offering a small but revealing glimpse into how manufacturers are navigating an increasingly complicated American trade regime.

The new filing, published Friday by the U.S. Foreign-Trade Zones Board, concerns Corvus Energy’s facility in Subzone 129C in Bellingham. The company submitted the notification on August 17, four days before its publication in the Federal Register. It is not yet an authorization to manufacture under FTZ procedures. Instead, it begins another regulatory process, with public comments accepted through September 30.
The timing is what makes the filing more interesting than its bureaucratic language suggests.

From Withdrawal to a New Filing

On  August 5 , Corvus requested the withdrawal of a production notification that it had filed in May for maritime battery equipment. That earlier proposal had been published on June 4. The Foreign-Trade Zones Board formally recorded the withdrawal on August 10.
Then came the new filing.
The gap between the withdrawal request and the new notification was just  12 days . The new proposal is for energy storage systems and would add specified foreign-status components to production authority that the Board had previously approved for the Bellingham operation.
That sequence does not, by itself, explain why Corvus changed its filing. The federal notice offers no reason for the withdrawal and does not say that the company abandoned its broader manufacturing plans. What it does show is that the company remains interested in using the FTZ framework at Bellingham while refining the products and inputs covered by its request.
For a manufacturer whose business depends on imported battery components, that distinction can matter.

Five Components, One Complicated Trade Regime

The new notification identifies  five principal categories of foreign-status materials and components : stainless-steel snap rings, steel compression springs, aluminum end plates, aluminum enclosure weldments and printed circuit boards.
The listed duty rates for those inputs range from  duty-free to 2.5 percent . But the tariff question does not end there. The filing says some of the materials may also be affected by duties imposed under  Section 232 of the Trade Expansion Act of 1962  and  Section 301 of the Trade Act of 1974 , depending on their country of origin.
That is where the economics of an FTZ become less straightforward than the familiar shorthand of “tariff savings.”
The FTZ does not simply erase every import duty. Under the rules cited by the Board, merchandise subject to Section 232 or Section 301 measures must enter the zone in  privileged foreign status . The same treatment applies to merchandise covered by applicable antidumping or countervailing-duty orders.
The filing specifically identifies a further complication: aluminum end plates and aluminum enclosure weldments imported from China may be subject to an antidumping or countervailing-duty order or investigation.
For Corvus, the zone is therefore less a tariff-free island than a carefully regulated customs environment.

A 200-MWh Factory Gets a New Role

The Bellingham operation has been part of Corvus' American expansion since 2022, when Washington officials announced that the company would establish its first U.S. manufacturing facility at the Port of Bellingham.
At the time, the state said the plant was designed for annual production capacity of 200 megawatt-hours of stored energy. Washington provided the Port of Bellingham with a  $250,000  strategic reserve grant to help prepare the facility. The Port itself owns and manages about 1,600 acres across Whatcom County, including industrial property, transportation facilities, a shipping terminal and an international airport.
The scale of the factory is modest compared with the enormous battery plants being built elsewhere in the United States. But Corvus occupies a different corner of the market. Its systems are designed primarily for maritime applications, including ferries, offshore vessels and other large marine platforms.
The company said in 2022 that it had experience across 500 projects, representing more than 400 MWh and more than 3.5 million operating hours. More recently, Corvus has described itself as having delivered more than 1,200 projects worldwide and employing more than 300 people across 15 locations*.
The numbers tell a story of a company that has moved well beyond its original Bellingham footprint.

Why the FTZ Matters Now

The significance of the new filing is not simply that Corvus wants to manufacture batteries in Washington. It is that the company is doing so while the cost and legal treatment of imported industrial components are becoming increasingly dependent on country of origin, tariff program and product classification.
The Bellingham facility began as a bet on the American maritime market. Four years later, its FTZ strategy reflects something broader: the attempt by manufacturers to build domestic production while still relying on global supply chains.
That tension is unlikely to disappear.
Corvus' new filing gives the company until September 30 to receive public comments before the regulatory process moves forward. Until the Board grants additional authority, the proposal remains just that: a proposal.
But the chronology is telling. A withdrawal on August 5, a new notification on August 17 and publication on August 21 suggest that, at least in Bellingham, the story of American battery manufacturing is still being written one customs classification at a time.