Koma Kulshan Project
|Koma Kulshan Hydroelectric Project|
|Official name||Koma Kulshan Project|
|Location||Mount Baker National Forest in Whatcom County, Washington|
|Opening date||October 1990|
|Owner(s)||Covanta Energy and Atlantic Power|
|Operator(s)||Puget Sound Energy|
|Dam and spillways|
|Impounds||Sulphur Creek, Rocky Creek|
Rocky Creek Dam: 32 feet (9.8 m)|
Sulphur Creek Dam: 37 feet (11 m)
Rocky Creek Dam: 18 feet (5.5 m)|
Sulphur Creek Dam: 15 feet (4.6 m)
|Koma Kulshan powerhouse|
|Operator(s)||Puget Sound Energy|
|Hydraulic head||c. 1,600 ft (490 m)|
|Turbines||1 x Sulzer Escher Wyss Pelton wheel|
|Installed capacity||13.3 MW @ maximum flow 120 cu ft/s (3.4 m3/s)|
|Capacity factor||38.6% (2009-2010)|
|Annual generation||45,000,000 kWh (10/1/2009–9/30/2010)|
The Koma Kulshan Project is a 13.3 MW run-of-the-river hydroelectric generation facility on the slopes of Mount Baker, a stratovolcano in Washington state's North Cascades. The project commenced commercial operation in October 1990, and is owned by a Covanta Energy–Atlantic Power joint venture. It supplies Puget Sound Energy via a Power Supply Agreement (PSA) contract. Its single turbine is a Pelton wheel supplied by Sulzer Escher Wyss.
Intakes are located at diversion dams on the Rocky Creek and Sulphur Creek tributaries of Lake Shannon. A 42–45-inch (1,100–1,100 mm) diameter, 19,250-foot (5,870 m) long penstock carries water from a bifurcation ( , 2,750 feet (840 m) a.s.l.) to the powerhouse. Water is discharged from the powerhouse through a short run on Sandy Creek to Baker Lake. Up to 120 cubic feet per second (3.4 m3/s) is diverted to the powerhouse.:3–16
Rocky Creek Dam ( ) is 18 feet (5.5 m) high, 32 feet (9.8 m) long at 2,770 feet (840 m) a.s.l.
Sulphur Creek Dam ( ) is 15 feet (4.6 m) high, 37 feet (11 m) long at 2,755 feet (840 m) a.s.l.
Power generation peaks in May through July coinciding with snowmelt, and has a smaller peak in November coinciding with the wet season.
- Burkardt, Nina (April 1995). "Technical Clarity in Inter-Agency Negotiations: Lessons From Four Hydropower Projects" (PDF). Water Resources Bulletin. American Water Resources Association. 31 (2): 188–189. doi:10.1111/j.1752-1688.1995.tb03372.x. Retrieved 10 July 2015.
- Power generation statement, Koma Kulshan Associates, October 22, 2010 – via FERC
- "Koma Kulshan". Atlantic Power Corporation. Retrieved 8 July 2015.
- Renewable Resources Development Report California Energy Commission, State of California, November 2003, principal authors: Ann Peterson, Pamela Doughman, Todd Lieberg
- Northwest Regional Forecast of Power Loads and Resources August 2007 – July 2017 (PDF), Portland, Oregon: Pacific Northwest Utilities Conference Committee (PNUCC), April 2007 – via efsec.wa.gov
- Covanta Energy sustainability report 2009/2010
- Christopher Bergesen (ed.), "Kulshan site", Power Plants Around the World (Website), Bethesda, Maryland, retrieved 2015-07-08
- Micro hydro at Virtual Nuclear Tourist
- Koma Kulshan site, Global Energy Observatory, c. 2006
- Bright, William (2004), Native American Placenames of the United States, University of Oklahoma Press, ISBN 9780806135984
- Amended license, FERC, April 25, 1990
- Water quality certification, Koma Kulshan project (PDF), Washington Department of Ecology, September 16, 1986
- Site map, Hydrokinetics, September 8, 1980 – via FERC. Note: Site map shows two unbuilt diversion dams on Dillard Creek and Sandy Creek, and does not match as-built configuration of penstock.
- Koma Kulshan Hydroelectric Project average annual flows for the period 10/1/10 to 9/30/11, Koma Kulshan Associates, December 14, 2011 – via FERC
- Initial Consultation Document: Baker River Project, FERC No.2150, Existing Conditions (PDF), Puget Sound Energy
- Bryan Swan, "Upper Sulphur Creek Falls", Northwest Waterfall Survey, retrieved 2015-07-08
- Bryan Swan, "Middle Sulphur Creek Falls", Northwest Waterfall Survey, retrieved 2015-07-08
- Beth A.K. Coughlan, Nina Burkardt, and David Fulton (November 1993), "Assessing the "need to negotiate" in ferc licensing consultations: A study of two hydropower projects", Environmental Impact Assessment Review, 13 (6), pp. 331–351, doi:10.1016/0195-9255(93)90002-S
- Vassilia Angelaki and Jonathan M. Harbor (1995), "IMPACTS OF FLOW DIVERSION FOR SMALL HYDROELECTRIC POWER PLANTS ON SEDIMENT TRANSPORT, NORTHWEST WASHINGTON", Physical Geography, 16 (5): 432–443, doi:10.1080/02723646.1995.10642564