APS Announces Plans for Seasonal Operations at Four Corners Power Plant
Starting 2023, seasonal schedule will reduce annual carbon emissions an estimated 20-25%, furthering APS’s clean energy commitment
The agreement comes as PNM announced plans to transfer its share of ownership to NTEC in 2024. The transfer of ownership, in combination with seasonal operations, will bring substantial environmental benefits and ensure continued service reliability for customers, especially during Arizona’s notoriously hot summer months, as APS transitions to its planned exit from coal by 2031.
Compared to current conditions, the shift to seasonal operations will reduce annual carbon emissions by an estimated 20-25%, furthering APS’s commitment to achieve 100% clean energy by 2050 and the individual sustainability goals of the plant’s other owners. The Four Corners Power Plant has already cut annual nitrogen oxide emissions by 88% since the installation of selective catalytic reduction (SCR) equipment on Unit 4 and Unit 5 in 2018.
“Four Corners has provided reliable and affordable electricity for almost 60 years, fostering economic growth and prosperity in cities and towns throughout the region,” said
In alignment with APS’s Coal Communities Transition, a
By moving to seasonal operations, Four Corners will become a more flexible resource that supports increasing amounts of clean energy, helping to compensate for the intermittent output of renewable resources. This change also helps ensure reliability of a critical energy source while reducing operations and maintenance costs.
Under seasonal operation, one of the plant’s two remaining units will operate only throughout the summer season of June through October when customers’ energy needs are the highest across the region. By contrast, the plant’s other unit will continue generating power year-round, subject to market conditions and planned maintenance outages.
The transition to seasonal operations will not require layoffs or furloughs of APS employees.
APS serves about 1.3 million homes and businesses in 11 of Arizona’s 15 counties, and is a leader in delivering affordable, clean and reliable energy in the Southwest. The company is committed to serving customers with 100% clean power by 2050. As owner and operator of
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