Bath County Pumped Storage Station
| Bath County Pumped Storage Station | |
|---|---|
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| Country | United States |
| Location | Bath County, Virginia |
| Coordinates | 38°12′32″N 79°48′00″W / 38.20889°N 79.8°WCoordinates: 38°12′32″N 79°48′00″W / 38.20889°N 79.8°W |
| Status | Operational |
| Commission date | 1985 |
| Construction cost | US$1.6 billion |
| Owner(s) | Dominion Generation Allegheny Energy |
| Reservoir information | |
| Surface area | 1.1 km2 (0.4 sq mi) |
| Pumped-storage station information | |
| Pump-generators | 6 x 500 MW Francis pump-turbines |
| Power generation information | |
| Installed capacity | 3,003 MW |
| As of December 30, 2011 | |
The Bath County Pumped Storage Station is a pumped storage hydroelectric power plant with a generation capacity of 3,003 MW [1] The station is located in the northern corner of Bath County, Virginia, on the southeast side of the Eastern Continental Divide, which forms this section of the border between Virginia and West Virginia. The station consists of two reservoirs separated by about 1,260 feet (380 m) in elevation.
It cost $1.6 billion,[2] and was constructed with 2,100 megawatts (MW) capacity.[3] In 2004 upgrades started, increasing power generation to 510MW and pumping power to 480MW per turbine.[4] Bath County Station is jointly owned by Dominion Generation (60%) and the Allegheny Power System (40%), and managed by Dominion. It went into operation in 1985 and is still the largest-capacity pumped-storage power station in the world.[5]
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[edit] Environment
A fishing habitat was created downstream of the facility.[6] In times of drought[7] water quality can be maintained[8] by using nearby recreational reservoirs to supply extra water to the creeks.[9] The creeks and recreational reservoirs have water quality sufficient for fish.[10][11]
[edit] How it works
Water is released from the upper reservoir during periods of high demand and is used to generate electricity. What makes this different from other hydroelectric dams is that during times of low demand, power is taken from coal, nuclear, and other power plants and is used to pump water from the lower to the upper reservoir. Although this plant uses more power than it generates, it allows these other plants to operate at close to peak efficiency for an overall cost savings. Back Creek and Little Back Creek, the water sources used to create the reservoirs, have a relatively small flow rate. However, since water is pumped between the reservoirs equally, the only water taken from these creeks now that the reservoirs are full is to replace the water lost to evaporation. During operation, the water level fluctuates by over 105 feet (30 m) in the 265-acre (110 ha) upper reservoir and 60 feet (20 m) feet in the 555-acre (220 ha) lower reservoir.
When generating power, the water flow can be as much as 13.5 million US gallons (51,000 m3) per minute (850 m³/sec). When storing power, the flow can be as much as 12.7 million US gallons (48,000 m3) per minute (800 m³/sec).
[edit] Controversy
Around 1986, the station was the subject of complaint over electricity rates in case 86-524-E-SC.[12]
[edit] References
- ^ Bath County Pumped-storage Station, http://www.dom.com/about/stations/hydro/bath-county-pumped-storage-station.jsp, retrieved 2011-12-30
- ^ "Bath County Pumped Storage", Civil Engineering—ASCE, Vol. 55, No. 7, July 1985, pg. 55
- ^ Updating SCADA Systems ModComp. Retrieved: 29 August 2010.
- ^ Refurbishment Power Gen, 21 January 2004. Retrieved: 29 August 2010.
- ^ "Bath County Pumped Storage Station". Dominion Energy. http://www.dom.com/about/stations/hydro/bath-county-pumped-storage-station.jsp. Retrieved 2010-07-09.
- ^ Singletary, William C., Jr. Stream Habitat Improvements Water Resources Research Forum page 9, 1988. Retrieved: 29 August 2010.
- ^ Bollinger, Mike. Water customers asked to conserve in drought Recorder Online, 21 August 2008. Retrieved: 29 August 2010.
- ^ Watershed quality United States Environmental Protection Agency, 2008. Retrieved: 29 August 2010.
- ^ FR Doc 02-9027 Federal Register, 9 April 2002. Retrieved: 29 August 2010.
- ^ Colbert, Judy. Virginia Off the Beaten Path, 10th 2008, page 174. ISBN 0762748818, 9780762748815
- ^ Mark Fike. Bugas. Bream Fishing Virginia Game & Fish. Retrieved: 29 August 2010.
- ^ Commission Order West Virginia Public Service Commission, 14 January 1987. Retrieved: 29 August 2010.
[edit] External links
- Dominion Power
- Allegheny Energy Supply
- Bath County Pumped Storage Station Home Page
- Bath County Pumped Storage Station on YouTube
