On July 6, 2018, Zald?-var signed a new power plant supply agreement with Colb??n, a Chilean electric power utility company. The copper mine will be the first to operate with 100% renewable energy: a combination of hydro, solar, and wind power.
The Copper Mine, located in Northern Chile, is a 50% joint venture between Barrick Gold and Antofagasta since December 2015. Antofagasta's official website reports Zald?-var production at 51,700 tonnes in 2017 and forecasts 55,000 to 60,000 tonnes in 2018.
The use of 100% renewable energy will begin in July 2020 for a duration of 10 years. Antofagasta estimates to remove approximately 350,000 tonnes of greenhouse gases per year.