Springerville Unit 3 Partnership LP is a private entity that owns Unit 3 of the Springerville Generating Station, a power plant located in Springerville, Apache County, Arizona. The Springerville Generating Station is a coal-fired power plant with a total capacity of at least 1,765 megawatts (MW) across its four units. Unit 3, specifically, has a capacity of 400 MW and began operation in 2006. Tri-State Generation and Transmission Association Inc. holds a 51% ownership stake in Springerville Unit 3 Holding LLC, which wholly owns Springerville Unit 3. Tri-State Generation and Transmission Association is a wholesale power cooperative serving members in Colorado, New Mexico, Wyoming, and Nebraska.
The company's primary operation is its ownership of a portion of the Springerville Generating Station, contributing to the generation of electricity. Historically, Springerville Unit 3 has been a coal-fired unit, though plans for conversion and retirement are underway for various units at the station. Tri-State Generation and Transmission Association announced in December 2023 that Springerville Unit 3 would retire in 2031 and be replaced with 1,250 MW of renewable energy.
Springerville Unit 3 Partnership LP has been involved in patent litigation as a defendant in one tracked case: Midwest Energy Emissions Corp. et al. v. Tucson Electric Power Co. et al. filed in the Arizona District Court on 2024-07-30. This indicates a posture of an operating company defending against patent infringement claims.