Pentagon Backs 6K Battery Materials Factory
The Department of Defense has conditionally approved a $250 million loan to battery startup 6K for a planned Tennessee plant.
Updated on Nov. 6, 2026 in Electric Vehicles
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The Department of Defense conditionally approved a $250 million loan to 6K, a North Andover, Massachusetts battery startup. The loan will fund a battery materials factory in Tennessee.
Why it matters
The loan signals federal support for domestic battery materials production that does not depend on Chinese suppliers. The project follows the cancellation of a earlier Department of Energy grant, leaving the company to seek new funding.
The Department of Defense loan is $250 million, roughly five times the $50 million Department of Energy grant 6K received in 2023 before that award was canceled. It remains unclear whether the conditional approval will be finalized.
The players
6K
6K is a 12-year-old battery startup based in North Andover, Massachusetts, that uses microwave-based plasma processing to produce battery materials.
Department of Defense
The Department of Defense is the U.S. federal agency responsible for military affairs and national security, which granted the conditional loan to 6K.
Department of Energy
The Department of Energy is the U.S. federal agency that oversees energy policy and research, which awarded 6K a $50 million grant in 2023 before cancellation.
The details
6K uses microwaves to heat metals into a plasma, depositing them onto a surface to produce cathode material with fewer manufacturing steps. The company must reapply for funding after the Trump administration canceled its 2023 Department of Energy grant, and the Tennessee factory was originally slated to open in 2024.
Timeline
2023: The Department of Energy awards 6K a $50 million grant, later canceled by the Trump administration.
2024: The Tennessee factory was originally scheduled to open.
November 6, 2026: 6K announces conditional approval of the Pentagon loan.
Roadmap
The shift from a canceled Energy Department grant to a Pentagon loan illustrates how domestic battery makers are turning to defense funding as federal energy support for the sector shifts. The move places 6K among a growing group of U.S. battery firms seeking to build supply chains independent of China.
For electric vehicle buyers, the loan points toward more domestically sourced battery materials, which could affect long-term supply and cost. The company's delayed Tennessee factory means the new capacity is not yet available.
The takeaway
Battery supply chain projects increasingly depend on defense and energy funding that can change with political priorities. Readers following EV costs should watch whether 6K's loan is finalized and when domestic material capacity comes online.
Further reading
For more on the battery supply chain behind electric vehicles, see Electric Vehicles.
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