CMS Energy

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CMS Energy Corporation
Type Public (NYSECMS)
Headquarters 212 West Michigan Ave.
Jackson, MI 49201
Area served MI
Key people David W. Joos, CEO
Industry Electric Producer and Utility
Natural Gas Utility
Products Electricity
Revenue $6.46 billion (2007)[1]
Net income Loss of $215 million (2007)[1]
Employees 7,898 (2007)
Subsidiaries Consumers Energy
CMS Enterprises

CMS Energy is a public utility supplying electric power and natural gas to most of Michigan. Its headquarters are located in Jackson, Michigan. The company has operated since 1890.

Its two principal subsidiaries are Consumers Energy and CMS Enterprises. Consumers Energy is a public utility that provides natural gas and electricity to more than 6 million of Michigan's 10 million residents and serves customers in all 68 of the state’s Lower Peninsula counties. CMS Enterprises' primary businesses are independent power production and natural gas transmission.

Political contributions

CMS Energy is one of the largest energy company contributors to both Republican and Democratic candidates for Congress. These contributions total $124,850 to the 110th US Congress (as of the third quarter), the largest of which has been to Sen. John Dingell (D-MI) for $17,000. Rep. Dingell, for his part, has consistently voted with the coal industry on energy, war and climate bills [1]. CMS Energy also contributed to Joseph K. Knollenberg, David Lee Camp, $8,500; Bart Stupak, $6,600 and Frederick Stephen Upton, $6,000.[2]

Contributions like this from fossil fuel companies to members of Congress are often seen as a political barrier to pursuing clean energy, and this is particularly true in the case of Rep. Dingell, who chaired the Committee on Energy and Commerce until 2009.

More information on coal industry contributions to Congress can be found at, a project sponsored by the nonpartisan, nonprofit Oil Change International and Appalachian Voices.

CEO Compensation

In May 2007, Forbes listed CMS Energy CEO David Joos as receiving $2.38 million in total compensation for the latest fiscal year, with a three-year total compensation of $6.16 million. He ranked 35th on the list of CEOs in the Utilities industry, and 419th among all CEOs in the United States.[3]

Power portfolio

Out of its total 8,439 MW of electric generating capacity in 2005 (0.79% of the U.S. total), CMS produces 36.6% from coal, 26.4% from natural gas, 25.0% from hydroelectricity, 9.6% from nuclear, and 2.8% from wood, oil, and tires. CMS owns power plants in Michigan, California, Connecticut, and North Carolina; 98.6% of its generating capacity comes from Michigan.[4]

Governor Granhom, in her 2009 State of the State message, has asked all Michigan utilities to evaluate renewable alternatives to new generation projects.[5]

Proposed coal-fired power plants

Existing coal-fired power plants

CMS had 14 coal-fired generating stations in 2005, with 3,055 MW of capacity. Here is a list of CMS's coal power plants:[4][6][7]

Plant Name State County Year(s) Built Capacity 2007 CO2 Emissions 2006 SO2 Emissions
J.H. Campbell MI Ottawa 1962, 1967, 1980 1540 MW 9,703,000 tons 36,790 tons
Karn MI Bay 1959, 1961 544 MW 3,324,000 tons 18,410 tons
Whiting MI Monroe 1952, 1953 345 MW 2,780,000 tons 10,980 tons
Cobb MI Muskegon 1956, 1957 313 MW 2,319,000 tons 12,164 tons
Weadock MI Bay 1955, 1958 313 MW 2,143,000 tons 10,792 tons

In 2006, CMS's five coal-fired power plants emitted 20.3 million tons of CO2 and 89,000 tons of SO2 (0.6% of all U.S. SO2 emissions).

Consumers Energy cancels Karn/Weadock expansion, announces retirement of seven aging coal units, and develops two new wind farms

On December 2, 2011, Consumers Energy announced that is was cancelling the proposed 800 megawatt Karn/Weadock Generating Complex Expansion because of "reduced customer demand for electricity due to the recession and slow economic recovery, surplus generating capacity in the Midwest market, and lower natural gas prices linked to expanded shale gas supplies." In addition, the company announced that it was suspending operations by the end of 2014 at seven existing generating units, included two units at the Whiting Generating Plant, two units at the Cobb Generating Plant, and two at the Karn Weadock Generating Complex. The company reported that it began construction in November 2011 of its first wind farm, the 100 MW Lake Winds Energy Park, in Mason County. Consumers Energy is also developing the 150 MW Cross Winds Energy Park in Tuscola County.[8]

Articles and Resources


  1. 1.0 1.1 CMS Energy Corp., BusinessWeek Company Insight Center, accessed July 2008.
  2. "House Members of the 110th (2007-2008) Congress", FollowtheCoalMoney, accessed March 2009.
  3. CEO Compensation: #419 David W Joos,, May 3, 2007.
  4. 4.0 4.1 Existing Electric Generating Units in the United States, 2005, Energy Information Administration, accessed April 2008.
  5. Utilities Asked to Seek Greener Alternatives"John Flescher, Associated Press, February 27, 2009"
  6. Environmental Integrity Project, Dirty Kilowatts: America’s Most Polluting Power Plants, July 2007.
  7. Dig Deeper, Carbon Monitoring for Action database, accessed June 2008.
  8. "Consumers Energy announces cancellation of proposed new coal plant, continued substantial investments in major coal units, anticipated suspension of operation of smaller units in 2015," Consumers Energy press release, December 2, 2011

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