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SRP Approves Arizona Expansion with 16 Gas-Fired Turbines

September 14, 2021

The board of directors of Arizona’s second-largest public utility has approved a nearly $1 billion plan to expand the natural gas-fired Coolidge Generating Station, adding 820 MW of generation capacity.

The Coolidge station at present is a 575-MW power plant with 12 single-cycle gas turbines; the plant began operating in 2011. The expansion plan approved Sept. 13 would add another 16 gas-fired turbines to the site.

The Coolidge station is operated by Salt River Project (SRP). The expansion plan was approved by an 8-6 vote of the utility’s board on Monday. The board also rejected a motion to table the decision for one month so the proposal and associated data could be analyzed.

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