BHP’s (ASX, LON, NYSE: BHP) Escondida and Spence copper mines in northern Chile are poised to pay a total of $840 million for an early end to a 2008 energy contract with a coal-fired thermoelectric plant.

The move follows a series of recent steps BHP has been taking to become an environmentally friendly miner, including carbon capture and storage and other innovations such as direct air capture.

Local power company AES Gener — a unit of AES Corp — said on Monday that the agreement signed with its Angamos plant will end in August 2021.

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