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Report Shows Cleanest Coal-Fired Commercial Scale Power Plant to be Built With Minimal Rate Impact and More Jobs Than Expected

Once constructed, TEC will be the cleanest coal-fueled commercial scale power plant in the United States, converting Illinois coal into substitute natural gas, and then efficiently burning the gas to produce electricity.

"We're gratified that more than 120,000 engineering hours performed by some of the leading firms in the world confirmed our expectations for the price and performance of the Taylorville Energy Center," said Bart Ford, Vice President of Tenaska. "Once the ICC submits its evaluation of this report, we look forward to Illinois General Assembly approval allowing this project to go forward. Depending upon when the ICC issues its report, construction could begin as early as year end."

Under the Illinois Clean Coal Portfolio Standard Law, the project was required to perform a Front End Engineering and Design (FEED) study to estimate the cost based upon a detailed engineering assessment of the labor and materials needed to build the plant. The FEED study was paid for in part through an $18 million grant by the Illinois Department of Commerce and Economic Opportunity.

This effort, led by the internationally recognized firms of Kiewit Energy Company (www.kiewit.com) and Burns and McDonnell (www.burnsmcd.com), required more than 120,000 engineering hours. Upon completion of the FEED study, a Facility Cost Report (FCR) including more than 1,500 pages of text and exhibits was prepared identifying the projected price, rate impact and environmental performance of the plant. Numerous additional consulting firms contributed their analysis to the FCR.

FCR findings for construction of the plant include:

    --  Nearly 10 million labor hours needed to build TEC resulting in almost
        2,500 construction jobs
    --  Total projected capital cost including contingency, escalation,
        financing, insurance and other expenses is $3.5 billion
    --  No cost to ratepayers before 2015, when TEC comes online

FCR findings for operation of the plant include:

    --  Hundreds of permanent plant and mining jobs will be required
    --  More than 1.5 million tons of Illinois coal/year will be used
    --  Projected residential rate impact over 30 years averages approximately
        1.8% over 2009 rates, or an increase of less than $.06/day in 2010
        dollars
    --  The $2.58 billion U.S. Department of Energy Loan Guarantee, for which
        the Taylorville Project has been selected for term sheet negotiations,
        will provide approximately $60 million per year in interest cost savings
        that will be passed through to electric customers
    --  By providing 602 megawatts (MW) in essential "baseload" power, TEC will
        push down market prices resulting in "market savings" of approximately
        $1.2 billion in first 10 years

Environmental performance of the project includes:

    --  By replacing higher polluting plants with lower polluting/more efficient
        TEC power, the project will cut net CO2 emissions by approximately 1.9
        million tons/year
    --  Conventional pollutants, including mercury, sulfur dioxide, nitrogen
        oxides and particulate matter, will be dramatically reduced to a
        fraction of conventional coal plant levels
    --  Carbon emissions will be comparable to clean burning natural gas plants,
        capturing and storing more than 50% of the carbon dioxide from coal
    --  Dry cooling design reduces water usage by 70% and produces no liquid
        discharge

Ford concluded, "After investing tens of millions of dollars and hundreds of thousands of hours of effort, we are more convinced than ever that the Taylorville Energy Center will lead to a renaissance for the Illinois coal industry and a resurgence of the economy of Central and Southern Illinois. We look forward to helping Illinois lead the nation in development of clean, affordable and domestically produced power."

About Tenaska

Tenaska has developed approximately 9,000 megawatts (MW) of electric generating capacity across the United States. Tenaska's affiliates operate and manage eight power plants in six states totaling more than 6,700 MW of generating capacity owned in partnership with other companies. Tenaska Capital Management, an affiliate, provides management services for stand-alone private equity funds, with nearly $5 billion in assets, including nine power plants (with approximately 5,400 MW of capacity), natural gas assets, and transmission infrastructure construction and maintenance operations.

Tenaska is applying proven pre- and post-combustion technologies on a commercial scale in its two environmentally friendly clean coal projects. In addition to the Taylorville Energy Center in Taylorville, Ill., Trailblazer Energy Center in Nolan County, Texas, is expected to be the first commercial scale, conventional coal-fueled power plant in the world to capture a significant portion of its CO2 after combustion. This plant's success would demonstrate how existing plants in the U.S. and China could be retrofitted cost-effectively with this carbon-reducing technology. In 2008, Tenaska was listed in benchmarking studies by the Natural Resources Defense Council as having the best fleet-wide record in the United States for controlling emissions of CO2 and as one of the top performing companies for controlling emissions of nitrogen oxides and sulfur dioxide. For more information about Tenaska, visit www.tenaska.com.

About Christian County Generation, LLC

Christian County Generation, LLC, a joint venture of Omaha-based independent power developer Tenaska and Louisville, Ky.-based MDL Holding Co., LLC, is developing the Taylorville Energy Center (TEC). TEC is Illinois' first proposed clean coal power plant. It incorporates coal gasification, combined-cycle and CO2 capture and storage technology, making it among the most environmentally-sustainable, commercially-sized coal plants in the world.

The Taylorville Energy Center's Integrated Gasification Combined-Cycle (IGCC) with Carbon Capture and Storage process can be seen at www.cleancoalillinois.com, along with details on the project, the technology and the law.

SOURCE Tenaska