Tiwai Point aluminium smelter's owner and operator has begun exploring "potential pathways" with electricity generators for a future beyond the plant's previously-signalled closing in 2024.
New Zealand Aluminium Smelters (NZAS) chief executive and general manager Chris Blenkiron said the company understood the importance of providing certainty to its staff and the people of Southland.
"There is lots of work to do, but we believe there is a positive pathway to securing a long-term presence for the smelter," he said in a statement.
"Irrespective of any agreement, we will remediate the site.
"Work is already under way to remove waste, improve our environmental performance, and continue building enduring relationships with our community."