Proterra has announced a US cell option for its Onyx modular battery platform, used in commercial electric vehicles and heavy-duty equipment. Shipments begin Q1 2027. The move increases American content by more than 600% and targets OEM demand for domestic supply chain assurance under Buy America regulatory frameworks.
Burlingame, California-based Proterra has announced that its Onyx modular battery platform — supplied to commercial vehicle and heavy-duty equipment manufacturers — will be available with a US cell option, with shipments beginning in Q1 2027. Orders are open now.
The company says the move will increase American content across the Onyx platform by more than 600%, building on its existing US manufacturing footprint that includes a technology center in Burlingame and a battery manufacturing facility in Greer, South Carolina.
The announcement is framed as a direct response to demand from North American original equipment manufacturers (OEMs) for greater domestic content and supply chain assurance, amid shifting trade policy and regulatory requirements including Buy America and Build America, Buy America (BABA) provisions.
“The market is asking for greater supply chain certainty and stronger domestic content. We’re answering,” says Chris Bailey, chief executive at Proterra. “This investment ensures we can deliver both while continuing to lead in performance and safety.”
Beyond the cell sourcing change, Proterra says it is also onshoring and nearshoring battery pack and module components and other internal subsystems. The company says the strategy is designed to reduce supply disruption risk, diversify geographic dependency and support scalable production for OEM partners.
The Onyx platform is a modular battery system targeting commercial vehicle and heavy-duty equipment applications, where it competes on energy density, durability and safety architecture.
