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Detroit Edison, founded in 1903, is an investor-owned electric utility which serves most of Southeast Michiganmarker. Its parent company, DTE Energy ( ), provides energy services to a variety of clients beyond Detroit Edison's service area.


Detroit Edison was part of a large holding company called North American Edison Company. North American's stock had once been one of the twelve component stocks of the May 1896 original Dow Jones Industrial Average. North American Company was broken up by the Securities and Exchange Commission, following the United States Supreme Courtmarker decision of April 1, 1946.

After that Detroit Edison operated independently, and publicly traded on the New York Stock Exchange, under the ticker symbol DTE through the mid 1990s. In early 1996, it became an operating subsidiary of the new holding company, DTE Energy Company, which replaced Detroit Edison Company on the stock exchange, and took over the trading ticker symbol.

Power generation

The utility operates eleven fossil-fuel generating plants, as well as the Enrico Fermi Nuclear Generating Stationmarker. The company is co-owner, with Consumers Energy, of the Ludington Pumped Storage Power Plantmarker, a hydroelectric pumped storage facility in Ludington, Michiganmarker. Detroit Edison uses fossil fuels (mainly coal) to generate 80-85 percent of its total electrical output, with the bulk of the remainder coming from nuclear power. At 3,300 megawatts, Detroit Edisons's Monroe Power Plantmarker has the third largest generating capacity of any coal-fired power plant in North America. Only Southern Company's Plant Bowenmarker located near Atlanta, Georgiamarker and Ontario Power Generation's Nanticoke Generating Stationmarker in Canadamarker have more generating capacity. Detroit Edison operates the St. Clairmarker and Belle River Power Plantsmarker in East China, Michiganmarker and the Marysvillemarker Power Plant near Port Huronmarker, all on the shores of the St. Clair Rivermarker. On the Detroit River it operates the Conners Creek Power Plant in the City Of Detroit and the River Rouge Power Plant and the Trenton Channel Power Plant. Farther north are the Harbor Beach Power Plant and the Greenwood Energy Center.

Energy transmission

Due to electric utility deregulation in Michigan, DTE Energy was forced to sell off Detroit Edison's sister subsidiary involved in high-voltage energy transmission: International Transmission Co. (ITC)

Energy distribution

Detroit Edison's near 11-gigawatt generating capacity is offered to its service area, which encompasses 13 counties in the southeastern portion of Michiganmarker's lower peninsula. Energy is distributed throughout Huron, Tuscola, Sanilacmarker, Saint Clairmarker, Lapeermarker, Livingstonmarker, Inghammarker, Oaklandmarker, Macombmarker, Waynemarker, Washtenawmarker, Lenaweemarker and Monroemarker counties by over a million utility poles and of power lines.

Detroit Edison's distribution line voltages are three-phase 4,800 Δ volts and 7,620/13,200 Y volts. All new distibution circuits constructed after 1959 are 13,200 volts.


  1. Jeremy J. Siegel, Stocks for the Long Run, McGraw-Hill, Second Edition, 1998, ISBN 0-07-058043-X
  2. Standard & Poor's Stock Guide, April 1996
  3. [1]

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