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Conversion of Arizona coal plants to natural gas approved by Corporation Commission

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Two coal plants in rural Arizona are a step closer to converting to natural gas production.

The Arizona Corporation Commission gave its official signoff during a Wednesday meeting.

Tucson Electric Power’s plans to convert units at its coal powered Springerville Generating Station was approved.

TEP’s goal is to have the natural gas pipeline built by 2029, with full conversion the following year. During the meeting, TEP’s Terry Nay said conversion will cost about $200 million, but an application to the commission said it would cost about $170 million.

SRP has said it will convert its unit at Springerville to natural gas as well.

The commission has also approved SRP’s plan to turn its Coronado coal plant near St. Johns to natural gas by 2029. That carries a heftier price tag of about $1.1 billion over 20 years.

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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.