(Reuters) – General Motors plans to invest at least $900 million to retool a Lansing, Michigan auto plant to build electric vehicles, Energy Secretary Jennifer Granholm said Thursday.

Granholm announced GM’s planned investment at an event in Lansing. Earlier on Thursday, she announced the largest U.S. automaker will receive $500 million in government grants to convert its Lansing Grand River Assembly Plant in Michigan to EVs at an unspecified future date. GM said it will produce EVs in Lansing at a future date and declined to discuss details of the planned models but said the plant will continue to produce the Cadillac CT4 and CT5.

(Reporting by David Shepardson)