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News Release

Alliant Energy and Infrastructure & Energy Alternatives enter into definitive agreement regarding sale of RMT, Inc.

Transaction expected to close in January 2013

Madison, Wis. and Chicago, Ill. - December 12, 2012 - Alliant Energy Corporation (NYSE: LNT) announced today that it has entered into a definitive agreement to sell RMT, Inc. (RMT), its renewable energy services subsidiary, to Infrastructure and Energy Alternatives, LLC (IEA).

“We announced our intent earlier this year to sell the RMT business because our belief was that RMT would be best served by an owner whose operations were better aligned with RMT’s engineering and construction business,” said Patricia Kampling, Alliant Energy Chairman, President and CEO. “We are pleased that we found a partner in IEA that offers a good fit for RMT and can move the business forward successfully.”

IEA is a leading provider of engineering, procurement and construction services to a variety of markets including renewable energy and fossil generation across North America. RMT will become a subsidiary of IEA working in their renewable energy group along with existing IEA subsidiary White Construction, Inc. RMT’s headquarters will remain in Madison, Wis.

"This transaction strategically strengthens our customer base and the services we provide in the renewable energy market," said Paul Daily, Chief Executive Officer of IEA. “We will leverage RMT’s industry leading engineering and project development group across all IEA companies and its long history of safely providing the highest quality construction of utility-scale clean energy generating facilities and high-voltage transmission lines in 26 states positions IEA for continued growth in North American renewable energy and infrastructure services markets.”

UBS Investment Bank advised Alliant Energy on the transaction. Subject to customary closing conditions, the acquisition is expected to close in January 2013.

Alliant Energy Media Contact: Scott Reigstad (608) 458-3145
IEA Contacts: Alyson Hanson or Kim Early (765) 832-8526