Coal-Fired Power Plants in Arizona & New Mexico
Apache
Location: AZ
Operator: Arizona Electric Power Coop
Configuration: 1 X 82 MW, 2 X 212 MW
Operation: 1964-1979
Fuel: subbituminous coal, natural gas
Boiler supplier: RS
T/G supplier: GE
EPC: Kaiser, Bruns & McDonnel
Quick facts: Design fuel for Units 2&3 was New Mexico bituminous coal. The site is 220ac.

Photograph by Lance and Erin (flickr)
Posted 1 Mar 2009

Cholla
Location: AZ
Operator: Arizona Public Service Co
Configuration: 1 X 114 MW, 2 X 289 MW, 1 X 414 MW
Operation: 1962-1981
Fuel: bituminous and subbituminous coal
Boiler supplier: CE
T/G supplier: WH, GE
EPC: Ebasco, Bechtel
Quick facts: PacifiCorp owns Unit-4. The plant uses coal from the McKinley Mine in New Mexico. Cholla-1 has one of the first commercial FGD systems in the US, a Research Cottrell packed tower limestone system retrofit in Oct 1973. Unit-2 was equipped with a similar system from the start.

Photograph by nep (flickr)
Posted 14 Jun 2008

Coronado
Location: AZ
Operator: Salt River Project
Configuration: 2 X 410 MW
Operation: 1979-1980
Fuel: subbituminous coal
Boiler supplier: Riley Stoker
T/G supplier: GE
EPC: Bechtel
Quick facts: A thrid unit was planned at Coronado, but never built.

Photograph courtesy of Salt River Project
Posted 17 Jan 2001

Four Corners
Location: AZ
Operator: Arizona Public Service Co
Configuration: 2 X 190 MW (ret), 1 X 253 MW (ret), 2 X 818 MW
Operation: 1963-1970
Fuel: subbituminous coal
Boiler supplier: RS, FW, B&W
T/G supplier: GE
EPC: Ebasco, Bechtel
Quick facts: Four Corners is on the Navajo Indian Reservation near Farmington, San Juan County. APS operates the plant and is the sole owner of Units 1-3, which were closed on 30 Dec 2013. Units 4&5 were jointly-owned by APS (15%), El Paso Electric Co (7%), Public Service New Mexico (13%), Salt River Project (10%), Southern California Edison Co (48%), and Tucson Electric Power Co (7%). APS bought out SCE in Dec 2013 for $182mn as part of a plan announced in Nov 2010 to close the oldest units and install additonal controls on Units 4&5, Four Corners was built to deliver power via 500- and 345kV lines to customers in four states. The original construction cost of all five units was $238mn. Subsequently, the owners invested over $500mn in new quipment and controls. Units 4&5 were retrofit with baghouses and wet lime scrubbers and all five boilers were retrofit with low-NOX burners. Morgan Lake, a man-made reservoir, supplies the plant's cooling water. A Power Plant Trading Card was made for this plant.

Photograph courtesy of Arizona Public Service
Posted 1 Jan 2014

Navajo
Location: AZ
Operator: Arizona Public Service Co
Configuration: 3 X 803 MW
Operation: 1974-1976
Fuel: bituminous coal
Boiler supplier: CE
T/G supplier: GE
EPC: Bechtel
Quick facts: Navajo is the largest coal-fired power plant west of the Missisippi Navajo Indian Reservation near Page AZ, about 80mi from the South Rim of the Grand Canyon. SRP operates the plant and and has a 21.7% ownership stake. Other owners are BUREC (24.3%), LADWP (21.2%), APS (14%), Nevada Power (11.3%), and Tucson Electric (7.5%). Fuel is from the Peabody Kayenta mine. Navajo serves customers in three states and supplies 90% of the electricity needed for water pumpting for the Central Arizona Project. The plant cost about $650mn to build. In 1999, the owners finished a $420mn FGD construction retofit project with supplier ABB. $45mn more was spent in 2009-11 on NOX control systems. The original 775ft tall stacks were replaced by new stacks of the same height but larger diameter. Stakeholders are involved in complex negotiations on future plans for Navajo PS. A Power Plant Trading Card was made for this plant.

Photograph by Alex Proimos (wikimedia)
Posted 1 Jan 2014

Plains Escalante
Location: NM
Operator: Tri-State G&T Coop
Configuration: 1 X 233 MW
Operation: 1984
Fuel: coal
Boiler supplier: CE
T/G supplier: GE
Quick facts: Construction on Escalante started in 1984 and the plant cost $450mn. Fuel is delivered by rail from Peabody's Lee Ranch Mine.

Photograph courtesy of Tri-State G&T Association Inc
Posted 9 Jan 2002

 
San Juan
Location: NM
Operator: Public Service New Mexico
Configuration: 2 X 360 MW, 2 X 544 MW
Operation: 1973-1982
Fuel: subbituminous coal
Boiler supplier: B&W, FW
T/G supplier: GE, Westinghouse
Quick facts: San Juan is operated by PNM on behalf of nine Western utility owners including investor-owned companies, coops, and public power companies. The site is 15mi from Farmington and 8m away from Four Corners PS. All four units have FGD scrubbers. In Feb 2013, PNM, the state Environment Department and USEPA agreed on a new plan for the future of San Juan PS. This calls for the retirement of Units 2&3 by the end of 2017, and the installation of SNCR on the other two units in early 2016.

Photograph courtesy of Public Service New Mexico
Posted 24 Jan 2002

Springerville
Location: AZ
Operator: Tucson Electric Power Co
Configuration: 2 X 425 MW, 2 X 450 MW
Operation: 1985-2009
Fuel: subbituminous coal
Boiler supplier: CE, FW
T/G supplier: BBC, MHI, Melco
EPC: Bechtel, Brown & Root, WGI, TIC
Quick facts: Springerville was jointly-developed by Tucson Electric Power (Units 1&2), Tri-State G&T Coop (Unit 3), and SRP (Unit 4). Unit-4 completed in Dec 2009 and cost about $850mn including $90mn in upgrades to the FGDs and burner systems of Units 1&2. Unit-3 has SCR and dry FGD scrubbers. Fuel is from Peabody's Lee Ranch Mine.

Photograph courtesy of Salt River Project
Re-posted 7 May 2014

Abbreviations

Data: industcards, Platts UDI World Electric Power Plants Data Base

Updated 07-May-2014

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