GM to Close Brownstown Battery Plant, Shift Celestiq and Corvette E-Ray Work
GM will close its leased Brownstown battery plant near Detroit, moving Celestiq and Corvette E-Ray work and employees while continuing EV investments.
Summary
GM confirmed on October 20, 2026, that it will close the leased Brownstown Battery Assembly Plant south of Detroit because the lease is nearing expiration, not because of a change in its electric vehicle strategy. Brownstown assembles battery packs for Cadillac’s flagship Celestiq EV, plus battery packs and electric drive units, the motors powering the vehicle, for the Chevrolet Corvette E-Ray plug-in hybrid. GM will transfer the work and employees to other facilities but has not identified them.
GM’s electrification plans faced pressure after the One Big Beautiful Bill Act, signed last year, repealed federal incentives for EV production and sales. Although GM has reduced its public discussion of EVs, it has not abandoned full electrification. It continues producing the Chevrolet Silverado EV and limited-time-only Chevrolet Bolt, researching lithium-manganese-rich and sodium-ion battery chemistries, and rolling out a $900 million facility to accelerate commercialization.
Positives
- Brownstown’s employees and work will transfer to other GM facilities rather than being eliminated.
- GM says the closure reflects an expiring property lease, not a retreat from its electric vehicle strategy.
- Chevrolet Silverado EV and limited-time-only Chevrolet Bolt production continues despite weaker federal support.
- A $900 million facility will accelerate commercialization of new battery technologies.
- Lithium-manganese-rich and sodium-ion battery research remains part of GM’s electrification program.
Risks & concerns
- Brownstown Battery Assembly Plant will close, ending GM operations at the leased site south of Detroit.
- GM has not identified which facilities will receive Brownstown’s employees and production work.
- The One Big Beautiful Bill Act repealed federal incentives for producing and selling electric vehicles.
- GM has reduced its public discussion of EVs since the federal policy reversal.