Wisconsin Power and Light Company Issues $10.2 Million in Credits

Approximate $43.21 Credit to be Issued on January or February Bills

Jan 05, 2007, 00:00 ET from Wisconsin Power and Light Company

    MADISON, Wis., Jan. 5 /PRNewswire-FirstCall/ -- Wisconsin Power and
 Light Company (WP&L), a subsidiary of Alliant Energy Corporation (NYSE:  
 LNT), will issue the first in a two-part credit for its natural gas
 customers in January or February. The first credit totals approximately
 $10.2 million. After an audit by the Public Service Commission of Wisconsin
 (PSC), the total credit amount is expected to be approximately $12.8
     (Logo: http://www.newscom.com/cgi-bin/prnh/20020405/LNTLOGO )
     The credit represents gas purchase savings from November 2005 through
 October 2006 and is the result of an innovative natural gas purchase plan
 WP&L developed to share natural gas purchase cost savings with customers.
 Customers get billed at market prices and to the extent WP&L is able to
 purchase gas for less than these market prices, the difference is shared
 between the company and its customers. This credit represents 80% of the
 customers' share of those below-market purchases.
     The natural gas purchase credit is based on customer usage over the
 individual credit audit period. Customers will see the first of the
 two-part credit on either their January or February bill. The credit is
 expected to be about $43.21 for the typical residential customer using
 approximately 800 therms per year.
     "In addition to this credit, our natural gas customers received an
 average credit of $50 last year," said Barbara J. Swan, president-WP&L. "We
 are pleased to share the savings from our prudent fuel purchasing decisions
 with our customers to help offset the costs of winter heating."
     Alliant Energy is an energy-services provider with subsidiaries serving
 approximately 1 million electric and over 400,000 natural gas customers.
 Providing its customers in the Midwest with regulated electric and natural
 gas service is the company's primary focus. Wisconsin Power and Light, the
 company's Wisconsin utility subsidiary, serves 453,000 electric and 179,000
 natural gas customers. Alliant Energy, headquartered in Madison, Wis., is a
 Fortune 1000 company traded on the New York Stock Exchange under the symbol
 LNT. For more information, visit the company's Web site at
 http://www.alliantenergy.com .

SOURCE Wisconsin Power and Light Company