Zimmer Generating Station

From Global Energy Monitor

William H. Zimmer Generating Station was a 1,425.6-megawatt (MW) coal-fired power station operated by Vistra Corp near Moscow, Ohio. The plant was shut down on May 31, 2022.[1]


The undated satellite photo below shows the power station in Moscow, Ohio.

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Plant Data

  • Owner: Dynegy W H Zimmer
  • Parent Company: Vistra Energy
  • Plant Nameplate Capacity: 1,425.6 MW (Megawatts)
  • Units and In-Service Dates: Unit 1: 1,425.6 MW (1991)
  • Location: 1781 Route 52, Moscow, OH 45153
  • GPS Coordinates: 38.867159, -84.228703
  • Technology:
  • Coal type:
  • Coal Consumption:
  • Coal Source: Tunnel Ridge Mine (Alliance Coal), Cumberland Mine (Contura), Shoemaker Mine (Murray Energy), Ireland River Loading Facility (Murray Energy)[2]
  • Number of Employees: 150 [3]
  • Unit Retirements: Unit 1, the power station's only unit, retired on May 31, 2022.[4][1]

Unit Retirement

In September 2020, plant owner Vistra Energy said the power station will retire by the end of 2027.[5][6]

In July 2021 it was announced that closure of Unit 1 had been moved up to May 31, 2022, due to the plant having "struggled economically due to its configuration, costs and performance.”[4]

Emissions Data

  • 2006 CO2 Emissions: 8,518,481 tons
  • 2006 SO2 Emissions: 22,054 tons
  • 2006 SO2 Emissions per MWh:
  • 2006 NOx Emissions: 13,855 tons
  • 2005 Mercury Emissions: 270 lb.

Death and disease attributable to fine particle pollution from Zimmer Generating Station

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.[7] 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.[8]

Table 1: Death and disease attributable to fine particle pollution from the Zimmer Generating Station

Type of Impact Annual Incidence Valuation
Deaths 21 $150,000,000
Heart attacks 32 $3,500,000
Asthma attacks 330 $17,000
Hospital admissions 15 $350,000
Chronic bronchitis 12 $5,500,000
Asthma ER visits 20 $7,000

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

Articles and Resources


  1. 1.0 1.1 Editor, Megan Alley Sun (2022-06-01). "Zimmer closes". The Clermont Sun. Retrieved 2022-06-03.
  2. "EIA 923 July 2020" EIA 923 July 2020.
  3. "Vistra Accelerates Closure of Ohio Coal Plant to Mid-2022, Years Earlier Than Planned" Prnweswire.com, July 19, 2021
  4. 4.0 4.1 "Vistra to shut down Ohio coal plant five years earlier than expected". Dallas News. 2021-07-19. Retrieved 2021-07-19.
  5. "Sierra Club Calls for State Transition Planning as Vistra Announces Coal Retirements in Illinois, Ohio". Sierra Club. 2020-09-29. Retrieved 2020-10-01.
  6. "Vistra to retire 6.8 GW coal, blaming 'irreparably dysfunctional MISO market" Utilitydive.com, September 30, 2020
  7. "The Toll from Coal: An Updated Assessment of Death and Disease from America's Dirtiest Energy Source," Clean Air Task Force, September 2010.
  8. "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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