Tenaska Announces Changes in Company’s Operations Group

OMAHA, Nebraska – Michael C. Lebens, a key Tenaska manager since the company’s formation in 1987, has been named president and chief executive officer of Tenaska’s Operations Group, effective April 1, 2008.

Lebens has been serving as the group’s executive vice president of engineering, construction and operations. The Operations Group is responsible for the direct operation or oversight of 22 electric generating plants in 11 states and one foreign country, totaling almost 13,000 megawatts of generation.

He succeeds Larry V. Pearson as Operations Group president and CEO. Pearson, also one of Tenaska’s earliest employees, has announced his retirement to be effective at the end of 2008. Until then, he will remain as executive vice president and support the transition in the Operations Group, serve on the Tenaska BioFuels, LLC Management Committee, and take part in special projects. After his retirement, Pearson will remain on the Tenaska Executive Board.

Nicholas N. Borman, vice president of engineering and construction, has been promoted to the lead role in engineering, with additional responsibilities for project engineering and environmental affairs.

Lebens has directed project engineering and operation of all generating projects in which Tenaska and its affiliates have ownership interests, including design, environmental permitting, construction, and operation. He has more than 30 years of experience as an engineer and manager in the energy industry, including development, design and construction of major power generation facilities and other energy-related projects. Before joining Tenaska, Lebens was employed by InterNorth, Inc. as director of engineering; and Gibbs & Hill and Burns & McDonnell with a variety of power plant design and construction responsibilities.

Borman, who joined Tenaska in 1991, has more than 23 years of experience in project management and engineering. He is responsible for engineering and construction of new Tenaska power plant projects, as well as new project development and acquisition activities.

Before joining Tenaska, Borman was senior mechanical engineer with Bibb and Associates where he was responsible for design and engineering of mechanical systems for coal-fueled power plant projects. He had held similar positions with Black and Veatch where he was responsible for engineering and design of systems for fossil-fuel power plant projects and field construction engineering of nuclear power plant systems.

About Tenaska 
Tenaska, based in Omaha, Neb., is one of the leading independent power producers in the U.S., with regional offices in Dallas, Denver and Calgary. Tenaska has developed approximately 9,000 megawatts (MW) of power generation and manages and operates 10 power plants totaling 6.800 MW that it owns in partnership with other companies. Tenaska also provides energy risk management services and is involved in asset acquisition and management, power marketing, fuel supply, gas transportation systems, biofuels marketing and electric transmission development. In 2007, Tenaska and its affiliates managed 35,400 MW of assets on behalf of a variety of customers and private equity investors. An affiliate, Tenaska Marketing Ventures, is regarded as one of the top 10 natural gas marketers in North America, and provides natural gas commodity, volume management, hedging and asset management products and services. Another affiliate, Tenaska Power Services Co., specializes in physical power marketing and electric asset management for utilities and non-utility generators, and is one of the largest marketers of physical power in the United States. For more information about Tenaska, visit the company’s Web site at www.tenaska.com