Cedar Rapids, Iowa, November 2, 2010 — Executing on Alliant Energy’s Strategic Plan, Interstate Power and Light Co., a unit of Alliant Energy Corp., is announcing planned adjustments to its electric power generating fleet.
These adjustments will help the company manage future energy costs for its Minnesota and Iowa customers amidst evolving environmental regulations.
In its integrated resource plan filed with the Minnesota Public Utilities Commission, the company provided a blueprint for meeting the electric needs of customers at a reasonable cost. The plan allows for potential changes to environmental regulations and allows IPL to meet current environmental requirements.
Through environmental and efficiency improvements at IPL‘s largest, newest and most-efficient generating facilities, efficient operation of slightly smaller units in the fleet and cost-effective purchased power agreements, the Plan illustrates that IPL is well-situated to meet the energy needs of IPL customers during the planning period.
The plan provides details of a process to retire older, smaller, and less-efficient equipment at certain locations. Among the facilities scheduled to see such changes include the Lansing, Sutherland, Prairie Creek, ML Kapp, and Fox Lake Generating Stations, although each plant will continue to generate cost-effective power on behalf of IPL customers.
The IRP also begins a process of retiring the Dubuque Generating Station. While it is expected that the retirement of the Dubuque plant will be completed by 2015, specific timing will depend on operational, market and other factors.
The state of Minnesota requires that new IRPs be filed once every two years. The IRP covers a 15-year planning period (2010 – 2025) and considers a number of factors that influence resource selection. The ultimate goal is to develop a plan that provides the best resource portfolio for our customers.
Given reasonable assumptions and after careful consideration of costs, reliability and risks, a reference case is constructed. All combinations of existing resource alternatives are considered when determining the optimal integrated resource plan.
Alliant Energy is an energy-services provider with subsidiaries serving about 1 million electric and over 412,000 natural gas customers. Providing its customers in the Midwest with regulated electric and natural gas service is the company’s primary focus. Interstate Power and Light, the company’s Iowa and Minnesota utility subsidiary, serves about 527,000 electric and 234,000 natural gas customers.