Wisconsin Public Service and enXco Seek Iowa Wind Farm Deal

GREEN BAY, Wis. and ESCONDIDO, Calif., Sept. 14 /PRNewswire/ — Wisconsin Public Service Corporation (WPSC), a subsidiary of Integrys Energy Group, Inc. (NYSE:TEG) and enXco Development Corporation, an EDF-EN company based in California, are negotiating a transaction calling for WPSC to purchase a 99-megawatt wind facility to be constructed in Howard County, Iowa, by enXco.


The two companies are currently performing due diligence and negotiating commercial terms and conditions for the construction and sale of the project. The parties expect to reach an agreement before the end of 2007.


WPSC had earlier announced its intention to build or buy wind facilities within the Midwest Independent System Operator’s footprint. “enXco brought us a viable project and they have a proven track record with involvement in nearly 20 wind farms in the U.S.,” said Rob Benninghoff, WPSC’s Director — Renewable and Special Projects. “Early in October, we plan to file for regulatory approval to purchase the project, pending a successful outcome of the negotiations.”


“Wisconsin Public Service is a nationally-respected utility with an award-winning commitment to its customers,” said Jorge Colmenares, Vice President of Project Transactions & Structuring for enXco. “We look forward to completing an agreement and providing the company with turnkey engineering, procurement, and construction services.”


About Wisconsin Public Service


Wisconsin Public Service Corporation, a wholly owned subsidiary of Integrys Energy Group, Inc. (NYSE:TEG) , is an investor-owned electric and natural gas utility headquartered in Green Bay, Wisconsin. It serves approximately 429,000 electric customers and 312,000 retail natural gas customers in residential, agricultural, industrial, and commercial markets, as well as wholesale customers. The company’s service area includes northeastern and central Wisconsin, as well as an adjacent portion of Upper Michigan. Information is available online at http://www.wisconsinpublicservice.com/.


About enXco Development Corporation


enXco Development Corporation, a subsidiary of enXco, inc. (http://www.enxco.com/) an EDF-EN Company (http://www.edf-en.com/) develops, operates and manages wind-energy projects throughout the United States. Since 1987, enXco has grown to be a significant owner and developer of wind-energy installations in the US and is the largest third-party O&M provider for wind parks, currently servicing more than 3600 turbines (1500 MW).


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Source: Wisconsin Public Service Corporation


CONTACT: Rob Benninghoff, WPSC Director – Renewable and Special
Projects, +1-920-433-1128; or Donna Lotz, Marketing Coordinator of enXco,
+1-760-329-1437, ext. 112


Web site: http://www.wisconsinpublicservice.com/
http://www.enxco.com/
http://www.edf-en.com/