General Motors is delaying the launch of a planned battery plant in Indiana by a year, signaling another retreat for electric vehicles as automakers wrestle with softer-than-expected consumer demand. 

The news was announced Tuesday as the automaker disclosed its joint venture with Samsung SDI to invest $3.5 billion in a battery plant scheduled to start production in 2027. Last year, however, the company said the partnership aimed for mass production in 2026.