Floating solar panels to boost efficiency at Chilean copper mine

By Reuters / March 14, 2019 / www.mining.com / Article Link

Miner Anglo American on Thursday completed the installation of a floating island of solar panels in a tailings pond associated with its flagship Los Bronces copper mine outside the Chilean capital of Santiago, a bid to boost efficiency at the deposit.

The 256 panels, tethered to the bottom of the artificial lagoon to ensure proper orientation even in strong winds and changing water levels, have the capacity to produce 86 kilowatts, the company said.

It's an excellent alternative for generating energy and making better use of water

Chile mining minister Baldo Prokurica, who attended a ceremony inaugurating the project, said he saw the pilot program, the first of its kind, according to Anglo American, as a model to follow.

"I hope that, in practice, it extends to other in the country," Prokurica told Reuters. "It's an excellent alternative for generating energy and making better use of water."

Global miners are increasingly seeking innovations to boost efficiencies, lower costs and reduce use of water at mines. In Chile, the world's top copper producer, that has largely meant a turn to solar power and desalinated sea water.

Los Bronces' high altitude location on the outskirts of heavily populated Santiago has forced the company to seek alternatives. Tailings from the production of copper at the mine are piped 57 kilometers (35.4 miles) to the lower-altitude pond, where they can be reused in industrial processes.

The pond's newly installed solar panels, besides generating electricity, also aid in reducing evaporation of water, improving efficiencies, according to the company.

Los Bronces produced 370,000 tonnes of copper in 2018.

(By Fabian Cambero and Dave Sherwood; Editing by Susan Thomas)

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