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Type Public (NYSEALE)
Headquarters 30 West Superior St.
Duluth, MN 55802
Area served FL, MN, ND, WI
Key people Donald J. Shippar, CEO
Industry Electric Producer and Utility; Coal Mining; Real Estate
Products Electricity, Coal
Revenue $841.7 million (2007)[1]
Net income $87.6 million (2007)[1]
Employees 1,400
Subsidiaries ALLETE Properties (FL)
Minnesota Power (MN, WI)
Superior Water, Light & Power (WI)
BNI Coal (ND)

ALLETE is involved in electricity production and retail, coal mining, and real estate.

Power portfolio

Out of its total 1,662 MW of electric generating capacity (0.2% of the U.S. total), ALLETE gets 86.7% from coal, 7.3% from hydroelectricity, and 6.0% from wood. All of ALLETE's power plants are in Minnesota.[2]

Existing coal-fired power plants

ALLETE had 9 coal-fired generating stations in 2005, with 1,441 MW of capacity. Here are more details on ALLETE's coal power plants:[2][3][4]

Plant Name State County Year(s) Built Capacity 2007 CO2 Emissions 2006 SO2 Emissions
Clay Boswell MN Itasca 1958, 1960, 1973, 1980 1073 MW 7,150,000 tons 20,407 tons
Taconite Harbor MN Cook 1957, 1967 252 MW 1,715,000 tons 14,800 tons
Syl Laskin MN St. Louis 1953 116 MW 936,000 tons 1,889 tons

In 2005, these 3 coal-fired power plants emitted 9.8 million tons of CO2 and 37,000 tons of SO2.

Existing Coal Mines

Articles and Resources


  1. 1.0 1.1 ALLETE Inc., BusinessWeek Company Insight Center, accessed July 2008.
  2. 2.0 2.1 Existing Electric Generating Units in the United States, 2005, Energy Information Administration, accessed April 2008.
  3. Environmental Integrity Project, Dirty Kilowatts: America’s Most Polluting Power Plants, July 2007.
  4. Dig Deeper, Carbon Monitoring for Action database, accessed June 2008.

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