Yorktown Power Station's three generating units can produce 1,141 megawatts of electricity – as much in one hour as 110 average homes use in one year. The station generates more than 6 percent of the electric power used by the homes, businesses and industries located in the company's 30,000–square mile service area.
The station is located on the historic York River near the Yorktown battlefield, site of the last major battle of the Revolutionary War. Other nearby historic attractions include Colonial Williamsburg, the colonial capital of Virginia; Jamestown, the first permanent English settlement in North America; and Jamestown Festival Park, which recreates early colonial life.
As with any coal-burning power station, Yorktown's two coal units produce particles known as fly ash. The flue gas containing fly ash leaves the station's boilers and passes through electrostatic precipitators. The precipitators act like giant electric air cleaners and remove about 99 percent of the ash and other particles contained in the gases. The cleansed gases are vented to the atmosphere through one of two tall stacks at the station.
The fly ash removed from the gases, together with ash from the bottom of the boilers, is loaded on trucks and hauled to a disposal site near the station where it is disposed in an environmentally safe manner.
Oil burns more cleanly than coal, so less fly ash is produced during the combustion process at Unit 3 than at Units 1 and 2. At Unit 3, flue gases containing fly ash are forced through a series of bends and turns in mechanical dust collectors. This twisting pathway forces the fly ash to drop out before the flue gases go up the stack. The fly ash is then collected and re-injected repeatedly into the boiler to achieve optimum combustion.
Yorktown Units 1 and 2 use the Low Nox Burner technology to reduce the amount of nitrogen oxide (NOx) that is released into the environment. Along with other pollution control devices, the low NOx burners keep emissions from the station within federally mandated emissions guidelines.
Net Generating Capacity: 1,141 megawatts
Generating Capacity by Unit:
Average Daily Coal Consumption: 2,200 tons
Average Daily Oil Consumption: 20,000 barrels (when operating)
Station Employees: +/- 100
Boiler Manufacturer: All units - Combustion Engineering, Inc.
Turbine Generator Manufacturer:
*Oil fired and is used only as a peaking unit.