enXco Announces Commissioning of Turbines at the 153 MW Walnut Wind Farm

Escondido, CA.—February 17, 2009—enXco, an EDF Energies Nouvelles Company (PARIS: EEN), and MidAmerican Energy Company have announced the commissioning of the 102 turbines of the Walnut Wind Farm.

enXco Development Corporation began construction of the Walnut Wind Project, located in Pottawattamie County, Iowa, in June 2008. MidAmerican Energy Company and enXco agreed in the fall to expand the project from 100.5 MW to the current 153 MW. The project, owned by MEC, represents the 5th project built for the group for a total of 595 MW.

"The Walnut Wind Project serves as another example of the solid working relationship between MEC and enXco, and the fast pace the two organizations can bring projects to successful completion. The expansion occurred under similar circumstances to our Pomeroy Project and demonstrated the ability of both organizations to quickly adapt to change," said Tristan Grimbert, president and CEO of enXco.

enXco Service Corporation will provide operations and maintenance for the turbines, as well as provide 24/7 remote monitoring and fault resets from their Operations Control Center in Chandler, Minnesota.

About enXco, an EDF EN Company

enXco (www.enxco.com) - an EDF Energies Nouvelles 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 leading third-party operations & maintenance provider for wind farms in North America.

About Carrier Clinic

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.

Media Contact

Marketing & Communications
858.521.3300 ext 3525