Colorado Utilities Surpass $1 Billion in Cutting Emissions and New Construction

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Researched by Industrial Info Resources (Sugar Land, Texas). Right now, there is almost 5,000 megawatts of new power generation under development in the state of Colorado. The majority, about 80%, is for coal-fired unit additions.

Click on the image at right to view a chart showing the breakdown of pre-commissioned units under development in Colorado.

One company, the Public Service Company of Colorado (Denver, Colorado), owned by Xcel Energy, will invest at least $1 billion in the next five years at its Colorado power plants for new generation and improving air emissions.

The largest project, a $900 million, 750-megawatt Unit #3 addition is currently under construction at the Comanche Power Station in Pueblo, Colorado. The project includes the construction of a coal/gas-fired dry bottom Alstom boiler, along with a Mitsubishi Heavy Industries (NHI) steam turbine/generator set. Engineering services are being provided by Utility Engineering Corporation (Denver, Colorado), with the construction contract awarded to the Shaw Group’s (NYSE:SGR)(Baton Rouge, Louisiana) subsidiary, Stone & Webster Engineering Corporation (Englewood, Colorado). Project completion is expected in 2009.

Close to $100 million will be invested on Units #1 and #2 at the Comanche plant for a dry flue gas desulfurization (FGD) scrubber project that includes a coal/gas Babcock & Wilcox opposed-fired and a Combustion Engineering tangential-fired boiler. Construction is scheduled to take place this summer, with the OEM (original equipment manufacturer) Babcock & Wilcox, Incorporated (Barbeton, Ohio) providing engineering and construction services. Project completion is set for 2008.

A less costly technique of reducing nitrogen oxide (NOx) emission is through the use of low NOx burners, which are scheduled to be installed on the two units at the plant in 2008. The project also involves installation of an overfired air system.

Beginning service in 1981, Public Service of Colorado’s 500-megawatt Pawnee Power Station (Brush, Colorado) is being evaluated for a $120 million scrubber project scheduled for 2009.

Outside of Public Service Company of Colorado, Tri-State Generation & Transmission Association (Westminster, Colorado), a wholesale electric supplier, owned by the fourteen cooperatives that it serves, is conducting a study on a $45 million selective catalytic reduction (SCR) project at its 1,338-megawatt Craig Power Station (Craig, Colorado) in 2009.

Another project for private power producer (PPP), Invenergy, LLC (Chicago, Illinois) involves a request for a proposal to start construction this summer on a $100 million simple-cycle, Spindle Hill Energy Center (Longmont, Colorado). With General Electric Company (Norcross, Georgia) serving as the general contractor, the 314-megawatt gas plant is scheduled to come online in the summer of 2007.

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