Consumers Energy announces major emissions reduction at its Dan E. Karn electric generating plant

ESSEXVILLE, Mich., Oct. 20, 2004 (PRNewswire-FirstCall) — Consumers Energy announced it has reduced emissions of nitrogen oxides at Units 1 and 2 of its Dan E. Karn electric generating plant by 83 percent during the 2004 ozone season.

The plant’s new Selective Catalytic Reduction (SCR) equipment reduced emissions of nitrogen oxides by 2,274 tons during the ozone season, from May 31 to September 30, 2004. Nitrogen oxides, which are emitted by cars, trucks and various industries, contribute to the formation of smog during hot summer weather. In 2003 the first of two SCRs was completed on Karn Unit 2, resulting in a 938-ton reduction of nitrogen oxide emissions during the first year of operation. The $120 million Karn SCR project was completed in May 2004 with commercial operation of the equipment on Unit 1.

“During the 2004 ozone season Karn/Weadock generated electricity with sharply reduced emissions of nitrogen oxides. That is another step forward in our commitment to protecting the environment, while providing the electricity that our customers need,” said Calvin H. Talley, Karn/Weadock General Manager.

“This is the first Consumers Energy generating plant to utilize Selective Catalytic Reduction units,” Talley said, adding that a $350 million SCR installation project is now underway at Unit 3 of Consumers Energy’s James H. Campbell generating plant, located in West Olive, Michigan. The utility is investing approximately $800 million in its Michigan power plants to meet the latest clean air standards in the most cost-effective way possible to hold down ultimate costs to electric customers.

The Selective Catalytic Reduction system works similarly to a catalytic converter on an automobile, but on a much bigger scale. It converts nitrogen oxides (NOx) in the Unit’s exhaust stream into nitrogen and water.

The Karn/Weadock Generating Complex is Consumers Energy’s largest power production complex and consists of three separate plants: the 310-megawatt coal-fueled Weadock plant; the 511-megawatt coal-fueled Karn 1&2 plant; and the 1276-megawatt natural gas- and oil-fueled Karn 3&4 plant. Together, Karn/Weadock and associated combustion turbines can generate up to 2,526 megawatts, enough to meet the electric needs of Bay City, Saginaw, Midland and Flint combined.

Consumers Energy, the principal subsidiary of CMS Energy, provides natural gas and electricity to more than six million of the state’s nearly 10 million residents in all 68 Lower Peninsula counties.

For more information about Consumers Energy, visit our Website at http://www.consumersenergy.com

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