Milton Kapp Generating Station

From Global Energy Monitor

Milton L. Kapp Generating Station was a 218.5-megawatt (MW) gas- and coal-fired power station operated by Interstate Power and Light near Clinton, Iowa.


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Plant Data

  • Owner: Interstate Power and Light
  • Parent Company: Alliant Energy
  • Plant Nameplate Capacity: 237.3 MW (Megawatts)
  • Units and In-Service Dates: Unit 1: 18.8 MW (1947), Unit 2: 218.5 MW (1967)
  • Location: 2001 Beaver Channel Pkwy., Clinton, IA 52732
  • GPS Coordinates: 41.807927, -90.233542
  • Coal Consumption:
  • Coal Source:
  • Number of Employees:
  • Unit Conversions: Unit 2 switched from coal to natural gas in 2015.[1]
  • Unit Retirement: Unit 1 retired in 2010 and Unit 2 retired in 2018.[1]

Switch to Natural Gas

Unit 2 switched to natural gas in 2015.[2] and retired in 2018.[1]

2010: Alliant to close coal boilers at six sites

According to plans filed with the Minnesota Public Service Commission on November 1, 2010, Alliant Energy plans to close coal-fired boilers at six sites in Iowa:[3]

The plan also designates two boilers at Dubuque Generating Station and another at the Sutherland Generating Station for retirement in 2015. Of this list, only one boiler (Lansing 3) is currently operational, and the replacement generation will come in significant part from running newer coal boilers at higher capacity.[3]

Emissions Data

  • CO2 Emissions: 1,260,776 tons (2006), 888,017.47 tons (2008)[4]
  • SO2 Emissions: 2,706.36 tons (2008) [5]
  • SO2 Emissions per MWh:
  • NOx Emissions: 525.86 tons (2008)[5]
  • Mercury Emissions:

Coal Waste Sites

Death and disease attributable to fine particle pollution from Milton Kapp

In 2010, Abt Associates issued a study commissioned by the Clean Air Task Force, a nonprofit research and advocacy organization, quantifying the deaths and other health effects attributable to fine particle pollution from coal-fired power plants.[6] Fine particle pollution consists of a complex mixture of soot, heavy metals, sulfur dioxide, and nitrogen oxides. Among these particles, the most dangerous are those less than 2.5 microns in diameter, which are so tiny that they can evade the lung's natural defenses, enter the bloodstream, and be transported to vital organs. Impacts are especially severe among the elderly, children, and those with respiratory disease. The study found that over 13,000 deaths and tens of thousands of cases of chronic bronchitis, acute bronchitis, asthma, congestive heart failure, acute myocardial infarction, dysrhythmia, ischemic heart disease, chronic lung disease, and pneumonia each year are attributable to fine particle pollution from U.S. coal plant emissions. These deaths and illnesses are major examples of coal's external costs, i.e. uncompensated harms inflicted upon the public at large. Low-income and minority populations are disproportionately impacted as well, due to the tendency of companies to avoid locating power plants upwind of affluent communities. To monetize the health impact of fine particle pollution from each coal plant, Abt assigned a value of $7,300,000 to each 2010 mortality, based on a range of government and private studies. Valuations of illnesses ranged from $52 for an asthma episode to $440,000 for a case of chronic bronchitis.[7]

Table 1: Death and disease attributable to fine particle pollution from Milton Kapp

Type of Impact Annual Incidence Valuation
Deaths 11 $79,000,000
Heart attacks 17 $1,900,000
Asthma attacks 180 $10,000
Hospital admissions 8 $180,000
Chronic bronchitis 7 $3,000,000
Asthma ER visits 12 $4,000

Source: "Find Your Risk from Power Plant Pollution," Clean Air Task Force interactive table, accessed April 2011

Articles and Resources


  1. 1.0 1.1 1.2 "Preliminary Monthly Electric Generator Inventory", 860m March 2020
  2. "Alliant Energy continues to bring clean energy to customers," Alliant Energy, July 15, 2015
  3. 3.0 3.1 Carrie Lowry La Seur, "Alliant to Close Coal Boilers at 7 Sites Across Iowa" Plains Justice Today, Nov. 8, 2010.
  4. Iowa Operating Permit Application, Title V Annual Emissions Summary
  5. 5.0 5.1 Iowa Operating Permit Application, Form 5.0, Title V Annual Emissions Summary
  6. "The Toll from Coal: An Updated Assessment of Death and Disease from America's Dirtiest Energy Source," Clean Air Task Force, September 2010.
  7. "Technical Support Document for the Powerplant Impact Estimator Software Tool," Prepared for the Clean Air Task Force by Abt Associates, July 2010

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