Cherokee Combined Cycle Project - Denver, Colo.
As part of Xcel’s compliance with the Colorado Public Utilities Commission’s approved emissions reduction plan under the state’s Clean Air-Clean Jobs Act (CACJ), the utility will retire its coal-fired units at Cherokee Station located in Denver, Colo. Xcel Energy retired Unit 1 (107 MW) in May 2012 and Unit 2 (106 MW) in October 2011; Unit 3 (152 MW) will be retired in 2015, and Unit 4 (352 MW) will be converted to natural gas in 2017. The new Cherokee 569-megawatt 2x1 Combined Cycle Power Plant will provide replacement power at the Cherokee Site.
Xcel Energy procured the major equipment such as 7FA.05 CTGs, GE D-11 STG and Nooter Eriksen HRSGs and selected Kiewit to execute the project as a design-build contractor. Kiewit’s experience with combined cycle engineering and construction, impressive safety program and track record were important factors to Xcel Energy when selecting its partner.
Challenges include planning around the active coal rail loop, congestion on site with limited lay down and meeting equipment delivery schedules. With the project projected to utilize approximately 300 local craft persons during the peak of construction and the site location near a residential neighborhood, Cherokee is a high visibility project for both Xcel and Kiewit.