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Arizona geothermal project moves forward as regulatory board approves new wells

Distant mountains dump trucks in foreground of strip mine landscape in Morenci, Arizona.
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Distant mountains dump trucks in foreground of strip mine landscape in Morenci, Arizona.

A state board that regulates drilling has greenlit new geothermal exploration wells in Greenlee County.

The governor’s office says it’s a step toward expanding geothermal energy projects in Arizona.

The wells, approved by the Arizona Oil and Gas Conservation Commission, are part of a project to use geothermal energy to directly power Freeport McMoRan’s Morenci Mine, reportedly the largest copper mine in North America.

The geothermal exploration company Zanskar is supporting the venture.

"Zanskar is excited to be a committed partner to Freeport-McMoRan in bringing Arizona's first geothermal development to life. Zanskar leads the geothermal exploration and technical development work, while Freeport provides land access and project resources," Zanskar said.

Gov. Katie Hobbs says the so-called MILESHIGH Project could entice more geothermal developers to the state.

"Arizona has abundant geothermal resource potential and Governor Hobbs is committed to advancing deployment of such a clean, firm power resource as part of her all-of-the-above energy strategy. As demonstrated by her visit to the MILESHIGH project last month, Governor Hobbs is committed to showcasing Arizona’s geothermal potential, encouraging private investments and activities in the state. The Oil and Gas Conservation Commission’s approval represents a step toward unleashing Arizona's geothermal potential, supporting a reliable and affordable energy future for all Arizonans," a governor spokesperson said.

Hobbs's office says new technology advancements mean geothermal could be a valid utility energy source, as the state’s geology has previously blocked traditional projects.

Freeport MacMoRan did not respond to a request for comment.

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Greg Hahne started as a news intern at KJZZ in 2020 and returned as a field correspondent in 2021. He learned his love for radio by joining Arizona State University's Blaze Radio, where he worked on the production team.