The plant has drawn fire from U.S. lawmakers for its use of technology supplied by Chinese battery maker CATL. Representative Mike Gallagher, who chairs the select committee on China, and Representative Cathy McMorris Rodgers, who chairs the Energy and Commerce Committee, urged the Commerce Department to investigate and impose export restrictions on four Chinese companies they said were involved in the "facility's design, construction, and information technology (IT) processes."

(Reporting by David Shepardson)