Lithium output at Greenbushes, the world’s largest hard rock lithium mine, may increase by as much as 10 per cent, as miners around the world elect to slash production amid the prolonged slump in prices for the battery metal.

Greenbushes, a joint venture 49 per cent-owned by US-listed Albemarle and 51 per cent by ASX-listed IGO and China’s Tianqi, can withstand low prices because it is one of the lowest-cost lithium projects in the world.