The Platreef project will be powered by solar power, combined with liquefied natural gas.
The parties said the MoU is a precursor to signing a long-term Power Purchase Agreement
Ark Energy was founded in 2021, with a mandate to decarbonise Korea Zinc's energy supply.
Companies say deal to begin in 2022 and last for three years
Rio hopes to achieve net-zero emissions by 2050
Capex for the project is estimated at US$37 million.
Miner plans to use high-temperature solar technology developed by US renewables startup Heliogen.
Company has retained technology's inventor as a consultant and may start a JV with him.
Company plans to reduce dependence on the domestic utility due to recurring supply disruptions.
Collahuasi plans a transition to 100% green electricity.
Aurubis Bulgaria aims to produce 20% of the electricity needed for its smelter by 2030.
The lightweight system will be integrated with a diesel engine.