Articles | 03.18.24

CPV Three Rivers Energy Center (TREC) is a 1,250-megawatt natural gas-fueled combined-cycle electric generation facility located in Goose Lake Township, Grundy County, Illinois. The facility began operations in 2023 and is capable of powering more than 1.25 million homes. TREC consists of two combustion turbines, two heat recovery steam generators, and two steam turbines to maximize efficiency. This new single-shaft design allows for efficient electric generation from each specific unit, independent of maintenance or outage work on the other sister unit. The plant is owned by Competitive Power Ventures and operated by CAMS.

Carbon Footprint

TREC is using combined-cycle technology and the latest “H” class gas turbine, approximately 30- 40 percent more efficient than older baseload electric generation technologies. This state-of-the-art technology combined with clean-burning natural gas replaces less efficient generating units, with offsetting carbon dioxide emissions equivalent to removing 300,000 cars off the road each year. Additionally, the facility uses advanced emissions control technology, including ammonia injection and dry low emission burners, to reduce total nitrogen oxide emissions.

Water Use

TRECs’ air-cooled condenser design reduces water use by 90 percent compared to a wet cooled facility, helping conserve valuable natural resources. The relatively small amount of water needed for process makeup comes from onsite wells. By utilizing air-cooled condensers, the facility is also able to implement a zero-liquid discharge system. Zero liquid discharge is a strategic wastewater management system that ensures that there will be no discharge of industrial wastewater into the environment. This benefits the environment through recycling and recovery for subsequent reuse for industrial purposes. This wastewater would otherwise be discharged into the Illinois, Kankakee, and Des Plaines River basin areas.

Articles | 08.22.22

New Covert designed an upgrade of its turbines and emission control systems to improve operational efficiencyThe New Covert Generating Facility (New Covert) is a natural gas fired, combined-cycle plant, consisting of three individually dispatchable combined-cycle units and state of the art emission controls. The plant, located in Covert, Van Buren County, Michigan, has operated since 2003. CAMS has operated the facility since 2015 and the facility is owned by Segreto Power Holdings, LLC, a subsidiary of Eastern Generation Holdings, LLC. The New Covert plant can provide electricity to over one million homes.

In 2018, the facility designed an upgrade of all three Mitsubishi 501G combustion turbines to improve the facility performance to a gross nominal output of 1,230 megawatts (MW). The gross nominal output of the combustion turbines increased from 245 MW each pre-project to 260 MW each post -project, and the heat recovery steam generators increased from 125 MW each pre-project to 150 MW each post-project.

The upgrade involved replacing several rows of turbine blades and vanes on each turbine and resulted in the need for less cooling air and a corresponding increase in fuel consumption, exhaust flow rate and temperature, turbine efficiency, and electricity production. In parallel, the plant upgraded its emission control systems for both NOx and CO. Upgrades to the NOx control system involved the ammonia injection grid and the aqueous ammonia system to ensure an emission concentration of 2 ppmvd at 15% O2 could be achieved.

As part of these upgrades, over the last three years New Covert developed and implemented a new ammonia distribution system for NOx control. The improved system includes new pumps, control systems, distribution headers and nozzles, and a reformulated Selective Catalytic Reduction catalyst. As a result of these investments, New Covert reduced ammonia consumption by 7.5%.  The relative cost for ammonia was $240,000 less in 2021 than in 2018, while increasing electricity output and producing lower concentrations of NOx. Overall, the project was beneficial to the environment while improving operational efficiency.

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