Mining giant Rio Tinto has inked a 15-year virtual power purchase agreement (VPPA) with U.S.-based TerraGen, aimed at strengthening its clean energy portfolio and accelerating emissions reduction at its Kennecott operation in Utah.
Under the arrangement, Rio Tinto will procure 78.5 megawatts (MW) of renewable electricity from TerraGen’s newly operational Monte Cristo I Windpower project in Texas. The Monte Cristo wind farm has a total capacity of 238.5 MW.
Strategic and Environmental Implications:
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The deal supports Rio Tinto’s commitment to cut its Scope 1 and 2 emissions by 50% by 2030 and reach net zero by 2050.
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It bolsters Rio Tinto’s renewable energy usage in the U.S., particularly for the Kennecott copper smelter — one of only two still operating in the country — which is strategically vital for copper supply used in EVs, power grids, and clean energy infrastructure.
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Globally, about 78% of Rio Tinto’s electricity consumption is already from renewables. The company aims to raise this to ~90% by the end of the decade.
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The purchase adds to Kennecott’s existing renewable capacity, including a 5 MW solar plant installed in 2023 and a second 25 MW solar facility nearing completion.
Comments from Management:
Nate Foster, Managing Director of Rio Tinto Kennecott, noted that the VPPA not only strengthens the company’s renewable energy portfolio but also supports the growth of renewable capacity in the U.S. grid.
Broader Context:
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The agreement aligns with global trends in decarbonization and cleaner metals production, especially as copper — a critical mineral for clean energy transition — becomes increasingly important.
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The move also reflects Rio Tinto’s long-term energy strategy, where industrial operations are progressively powered through green sources, reducing reliance on fossil fuels.