DETROIT: General Motors Co and South Korean joint-venture partner LG Energy Solution on Friday said they will build a second US battery cell manufacturing plant, revealing plans for a $2.3 billion factory in Spring Hill, Tennessee.

The planned 2.8 million-square-foot plant, scheduled to open in late 2023, will employ 1,300 people and will have production capacity of about 35 gigawatt-hours, similar to the companies' Ultium Cells joint-venture plant in Lordstown, Ohio, as they move to respond to the growing demand in the electric vehicle market. The plant's capacity would enable it to supply battery packs for more than 500,000 electric vehicles a year.

The United Auto Workers on Friday called on GM to ensure the new plant is staffed with union-represented workers, which GM officials have said would be determined by the employees. LG Chem said in a regulatory filing that its LG Energy Solution unit will invest $933.5 million in the plant between this year and 2023.