AES Westover Generation Plant
Westover Generation Plant is a coal-fired power station owned and operated by AES near Johnson City, New York. In March 2011 the AES Westover retired its Unit 8 power station in March 2011. Additionally, AES announced it wanted to sell four of its New York coal plants, including Westover.
In 1999, AES purchased six power plants in New York (including the Westover station) from NGE Generation, Inc. for $953 million. The other stations included in the deal were AES Somerset, AES Cayuga, AES Greenidge, AES Hickling, and AES Jennison.
The now retired station sits between Interstate 86 and the Susquehanna River, near the intersections of Interstates 86 and 81. Downtown Binghamton is 3.2 miles from the Westover station.
- 1 Plant Data
- 2 Emissions Data
- 3 Emissions Reduction Technology
- 4 Battery Storage Project
- 5 Articles and Resources
- Owner: AES Westover LLC
- Parent Company: AES
- Plant Nameplate Capacity: 119 MW
- Units and In-Service Dates: 44 MW (1943), 75 MW (1951)
- Location: 720 Riverside Dr., Johnson City, NY 13790
- GPS Coordinates: 42.111389, -75.974111
- Coal Consumption:
- Coal Source:
- Number of Employees:
- 2006 CO2 Emissions: 615,505 tons
- 2006 SO2 Emissions:
- 2006 SO2 Emissions per MWh:
- 2006 NOx Emissions:
- 2005 Mercury Emissions:
The following table gives more info on this plant's SO2 emissions levels, as well as on whatever SO2 emissions "scrubbers" (Flue Gas Desulfurization units, or FGDs) have been installed at the plant. Each of the plant's units is listed separately, and at the bottom overall data for the plant is listed.
|Unit #||Year Built||Capacity||MWh Produced (2005)||SO2 Emissions (2005)||SO2 Emissions per MWh (2005)||Average Annual Coal Sulfur Content||FGD Unit Type||FGD In-Service Year||FGD SO2 Removal Efficiency|
|7||1943||44 MW||186,370 MWh||3,437 tons||36.88 lb./MWh||2.00%||none installed|
|8||1951||75 MW||613,413 MWh||7,642 tons||24.92 lb./MWh||1.96%||none installed|
|Total||119 MW||799,783 MWh||11,079 tons||27.71 lb./MWh|
Death and disease attributable to fine particle pollution from AES Westover Generation Plant
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. 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.
Table 1: Death and disease attributable to fine particle pollution from the AES Westover Generation Plant
|Type of Impact||Annual Incidence||Valuation|
|Asthma ER visits||14||$5,000|
Source: "Find Your Risk from Power Plant Pollution," Clean Air Task Force interactive table, accessed February 2011
Emissions Reduction Technology
In December 2006, AES announced the company would install emission-reducing technology on Unit 8 of the Westover station. Construction on the $50-million project began in early 2007 and was completed in 2008. AES installed a Selective Catalytic Reduction (SCR) system for a ninety percent reduction in nitrogen oxide (NOx) emissions. A dry scrubber and fabric filter bag-house was built to reduce sulfur dioxide (SO₂) emissions by ninety-five percent. AES expected mecury emissions would be reduced by ninety percent because of these additions.
Battery Storage Project
On April 15, 2010, $22.3 million battery storage project at the AES Westover station was approved by the New York Public Service Commission. Unit 7 of the Westover station will be converted for the project, which will store 20 megawatts of energy until it is needed by the grid. The project will include ten 53-foot containers, each with inverters and a direct current (DC) battery system storing 2 megawatts. The battery storage project will be built in two phases with the first beginning in the second quarter of 2010.
Articles and Resources
- "AES to sell four New York coal plants" Reuters, March, 4, 2011.
- "AES completes acquistion of six power plants in New York with total capacity of 1424 MW", Business Wire via High Beam Research, May 14, 1999.
- Coal Power Plant Database, National Energy Technology Laboratory, U.S. Dept. of Energy, 2007.
- EIA-767, Energy Information Administration, 2005.
- "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
- "AES to invest $50 million in clean-coal emission technology at AES Westover in New York", AES press release, December 13, 2006.
- "NY Oks AES plan for 20 MW battery storage project", Reuters, April 15, 2010
- "Energy storage system approved for AES Westover power plant", pressconnects.com, April 16, 2010.
- Existing Electric Generating Units in the United States, 2005, Energy Information Administration, accessed Jan. 2009.
- Environmental Integrity Project, "Dirty Kilowatts: America’s Most Polluting Power Plants", July 2007.
- Facility Registry System, U.S. Environmental Protection Agency, accessed Jan. 2009.
- Carbon Monitoring for Action database, accessed Feb. 2009.