The utility Salt River Project Agricultural Improvement and Power District (SRP), which has proposed expanding its natural gas-fired power plant in Pinal County, AZ, hit a regulatory roadblock for the project Tuesday with the Arizona Corporate Commission (ACC).

srp coolidge

In a 4-1 vote, the ACC denied SRP a certificate of environmental compatibility (CEC) that would authorize the start of construction to expand the 575 MW Coolidge Generating Station, located in the Southeast Valley region between Phoenix and Tucson. 

“SRP will continue to evaluate what generation and market options to pursue in the near term to address the resource challenges this decision creates for serving our customers with reliable, affordable, sustainable energy,” the utility said. “Additional updates will be...