- Alliant Energy
Alliant Energy Corporation (nyse|LNT) is a
public utilityholding company that incorporated in Madison, Wisconsinin 1981. It comprises several subsidiaries: [cite web|url=http://money.cnn.com/quote/snapshot/snapshot.html?symb=LNT|title=Alliant Energy Corporation snapshot|publisher=CNN Money|accessdate=2006-11-09]
Interstate Power and Light Company (IPL) is a public utility that generates and distributes
electricity, and purchases and distributes natural gas.
The company got its start in 1925 as the Interstate Power Company (IPC) and which was a consolidation of several small companies scattered across northern Iowa and southern Minnesota, the largest of these properties being the company in Dubuque, Iowa - and which would become its headquarters.
It expanded greatly in the late 1920s to include operations in Iowa, Wisconsin, Minnesota, North and South Dakota, Nebraska, Oklahoma, and Manitoba (Canada). One of the largest purchases in the late 1920s was the purchase of what became its northern Minnesota territory from the Wilbur Foshay interests.
In the 1930s and 1940s, the effects of the Depression and passage of laws to regulate utility operations at the state and federal level had an effect on IPC as well as its neighbors. In Iowa, the legislature passed laws making it easier for cities to establish municipal utilities (and indeed, there are over 100 municipal utilities in Iowa today). By 1940, the state of Nebraska had passed laws that forced all investor-owned utilities in that state to sell their operations to one of several 'public power districts' operating in that state.
During the 1940s, IPC divested itself of all its operations that were not part of its main territory in southern MN / northern Iowa. The largest chunk of territory was that operating in northeast ND / northern MN / Emerson, Manitoba which was sold in summer 1943 and fall 1944. The SD properties (around Winner) were sold in 1946. It would not be until 1956 when the last isolated district - the area around Waconia, MN - was sold to Northern States Power.
As IPC sold its properties that were isolated from the main system, it picked up others that were adjacent to its system and more easily interconnected: portions of the old Minnesota Utilities holding company, the Eastern Iowa Power system, and the Iowa / Minnesota properties of the Central States Power and Light Corporation.
The Wisconsin operations were sold to Wisonsin Power and Light (ironically, now the eastern half of Alliant's operations).
The other part of IP&L - IES Utilities - incorporated in Iowa in 1925 as the Iowa Railway and Light Corporation. IES expanded across that part of Iowa south of IPC's territory, eventually acquiring the Iowa operations of the Union Electric Company of St. Louis, MO.
IES and IPC in the mid-1990s to form IP&L. Today, it provides electricity and gas to communities in Iowa, Illinois, and southern Minnesota. [cite web|url=http://www.alliantenergy.com/docs/groups/public/documents/pub/p015419.pdf|title=Interstate Power and Light Company, Electric Tarrif|publisher=Alliant Energy|accessdate=2006-11-09]
Wisconsin Power and Light Company (WPL) provides similar services as IPL in Wisconsin.
In the 1970's IES constructed the
Duane Arnold Energy Center, a 615mw nuclear plant in Palo, Iowa. In 2006, Alliant closed a deal with Florida Power & Lightto sell their stake in the plant.
Alliant Energy also provides several non-regulated services, including ground transportation and energy engineering (such as wind and geothermal energy).
* [http://www.alliantenergy.com/ Alliant Energy]
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