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John Twitty Energy Center is an operating power station of at least 603-megawatts (MW) in Springfield, Greene, Missouri, United States. It is also known as Southwest Power Station.
Location
Table 1: Project-level location details
| Plant name | Location | Coordinates (WGS 84) |
|---|---|---|
| John Twitty Energy Center | Springfield, Greene, Missouri, United States | 37.150882, -93.389741 (exact) |
The map below shows the exact location of the power station.
Unit-level coordinates (WGS 84):
- GT1, GT2, Unit 1, Unit 2: 37.150882, -93.389741
Project Details
Table 2: Unit-level details
| Unit name | Status | Fuel(s) | Capacity (MW) | Technology | CHP | Start year | Retired year |
|---|---|---|---|---|---|---|---|
| GT1 | Operating[1] | fossil gas: natural gas, fossil liquids: fuel oil[2] | 57[1] | gas turbine[1] | no[1] | 1983[1] | – |
| GT2 | Operating[1] | fossil gas: natural gas, fossil liquids: fuel oil[2] | 52[1] | gas turbine[1] | no[1] | 1983[1] | – |
| Unit 1 | Operating | coal: bituminous | 194 | subcritical | – | 1976 | 2030 (planned) |
| Unit 2 | Operating | coal: subbituminous | 300 | subcritical | – | 2011 | 2051 (planned) |
CHP is an abbreviation for Combined Heat and Power. It is a technology that produces electricity and thermal energy at high efficiencies. Coal units track this information in the Captive Use section when known.
Table 3: Unit-level ownership and operator details
| Unit name | Owner | Parent |
|---|---|---|
| GT1 | City Utilities of Springfield - (MO) [100%] | City Utilities of Springfield - (MO) [100.0%] |
| GT2 | City Utilities of Springfield - (MO) [100%] | City Utilities of Springfield - (MO) [100.0%] |
| Unit 1 | City Utilities of Springfield - (MO) [100%] | City Utilities of Springfield - (MO) [100.0%] |
| Unit 2 | City Utilities of Springfield - (MO) [100%] | City Utilities of Springfield - (MO) [100.0%] |
Background on Unit 2
In Nov. 2004, Springfield voters rejected a proposed new unit at the power station, but City Utilities of Springfield (SCU) put the plant on the ballot as a special election in June 2006, at which point the vote passed.[3]
On Aug. 24, 2006, the Sierra Club appealed a Missouri judge’s decision to allow City Utilities of Springfield to go forward with plans to build Southwest II.[4] In August 2007, the Missouri Supreme Court declined to hear Sierra Club’s appeal of the permit.[5]
City Councilman Doug Burlison initiated a petition asking state auditors to consider whether the way SCU handled the permit was improper; the petition gathered 5,874 signatures, more than the 5,000 necessary to force a state audit. State Auditor Susan Montee’s 73-page report, released Dec. 18, 2007, criticizes SCU for behaving more like a corporation than a public utility, and suggests that SCU contributions to local organizations may violate the Missouri State Constitution. The Missouri Attorney General will be responsible for any final decision on SCU’s practices.[6]
The plant began operating in November 2010, and began producing power commercially in January 2011.[7] The plant burns about 87,000 pounds of coal an hour at full power.[8]
Retirement plans
Pursuant to a 2019 Integrated Resource Plan (IRP), City Utilities was planning to retire the coal/gas turbine-generator at Unit 1 in 2027. The move would serve to reduce the utility's reliance on coal. Management was planning to evaluate options to replace the energy source in conjunction with an updated IRP in 2022, and the energy would possibly be replaced with a renewable long-term purchased power agreement.[9]
In their 2022 IRP, City Utilities indicated they planned to delay the retirement of Unit 1 to 2030. Unit 2 was slated to retire in 2051.[10]
Emissions Data
- 2006 CO2 Emissions: 1,459,659 tons
- 2006 SO2 Emissions:
- 2006 SO2 Emissions per MWh:
- 2006 NOx Emissions:
- 2005 Mercury Emissions:
Death and disease attributable to fine particle pollution from Southwest Power 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.[11] 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.[12]
Table 1: Death and disease attributable to fine particle pollution from the Southwest Power Station
| Type of Impact | Annual Incidence | Valuation |
|---|---|---|
| Deaths | 4 | $26,000,000 |
| Heart attacks | 6 | $610,000 |
| Asthma attacks | 61 | $3,000 |
| Hospital admissions | 3 | $61,000 |
| Chronic bronchitis | 2 | $980,000 |
| Asthma ER visits | 4 | $1,000 |
Source: "Find Your Risk from Power Plant Pollution," Clean Air Task Force interactive table, accessed February 2011
Citizen Groups
- Columbia Climate Change Coalition, monta [at] columbiaclimatechangecoalition.org
- Missouri Sierra Club, Melissa Hope, melissa.hope [at] sierraclub.org
- Missouri Coalition for the Environment, Erin Noble, enoble [at] moenviron.org
Articles and Resources
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 https://web.archive.org/web/20200612191408/https://www.eia.gov/electricity/data/eia860m/archive/xls/november_generator2019.xlsx. Archived from the original on 12 June 2020.
{{cite web}}: Missing or empty|title=(help) - ↑ 2.0 2.1 https://web.archive.org/web/20211122185052/https://www.eia.gov/electricity/data/eia860m/archive/xls/july_generator2021.xlsx. Archived from the original on 22 November 2021.
{{cite web}}: Missing or empty|title=(help) - ↑ "Southwest 2: This Time, Voters Say Yes", News Leader, June 7, 2006.
- ↑ "Permit Errors and Future Pollution Levels Prompt Sierra Club Appeal", Missouri Sierra Club, September 2006.
- ↑ "Highest Court Last Resort for Sierra Club in Mo. Coal-Plant Duel", LegalNewsline, August 23, 2007.
- ↑ “Audit Criticizes CU; Utility Fires Back", News-Leader, December 19, 2007.
- ↑ "New coal-fired power plant begins producing electricity in southwest Missouri" KSPR, Nov. 9, 2010.
- ↑ Wes Johnson, "Southwest 2 power plant now burning coal" News-Leader.com, Nov. 20, 2010.
- ↑ "Fitch Rates Board of Public Utilities of Springfield, MO's COPs 'AA'; Outlook Stable," FitchRatings, September 9, 2021
- ↑ "2022 Integrated Resource Plan Overview," City Utilities, December 2022
- ↑ "The Toll from Coal: An Updated Assessment of Death and Disease from America's Dirtiest Energy Source," Clean Air Task Force, September 2010.
- ↑ "Technical Support Document for the Powerplant Impact Estimator Software Tool," Prepared for the Clean Air Task Force by Abt Associates, July 2010
Additional data
To access additional data, including interactive maps of the power stations, downloadable datasets, and summary data, please visit the Global Coal Plant Tracker and the Global Oil and Gas Plant Tracker on the Global Energy Monitor website.
