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“Given Arizona’s increasing demand for around-the-clock energy and the long timelines for adding new generation, the conversion has proven to be a viable option,” APS said.

Published July 6, 2026

The Cholla Power Plant in Navajo County, Ariz. Arizona Public Service plans to convert two units at the plant to natural gas generation, providing up to 380 GW of energy, it announced in July 2026.

Courtesy of Arizona Public Service