enXco Signs Agreement with MEC to Build a 100.5 MW Wind Farm

Escondido, CA.—June 16, 2008—enXco, an EDF Energies Nouvelles Company, and MidAmerican Energy Company have announced that an agreement has been signed to build a 100.5 megawatt wind facility located in Pottawannamie County, Iowa.

Construction of the Walnut Wind Project, which will utilize 67 GE 1.5 megawatt turbines will begin mid-June 2008 and is scheduled for completion by year-end. The Walnut Wind Project will then be transferred to MidAmerican upon completion.

"We're pleased to continue our strong relationship with MEC, demonstrated by the fact that this is the 5th project enXco will build for the MEC group in the last four years. The Walnut Wind project follows the success of the recently completed 198 MW, 2 phase, Pomeroy project in Iowa. Supporting MEC's growth in their renewable energy portfolio has been a great experience for enXco" said Scott Nelson, Assistant Vice President for enXco.

About enXco, an EDF EN Company

enXco, Inc. (www.enxco.com) an EDF-EN Company (www.edf-energies.nouvelles.com) develops, constructs, operates and manages renewable energy projects throughout the United States. For more than two decades, we have been a leader in wind-energy focusing on large-scale wind projects. Today enXco's portfolio includes solar and biomass technologies, in an effort to help drive our nation's transition to a sustainable energy economy. enXco is a significant owner and developer of wind-energy installations in the United States, and is the largest third-party operations & maintenance provider for wind farms in North America.

About MidAmerican Energy Group (MEC)

MidAmerican Energy Company is the largest utility in Iowa and is strategically located in the middle of several major markets in the Midwest. We provide service to more than 720,000 electric customers and more than 702,000 natural gas customers in a 10,600 square-mile area from Sioux Falls, S. D. to the Quad Cities area of Iowa and Illinois.

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