TransCanada Gas Transmission Northwest (GTN) System
Headquarters:
1400 SW 5th Avenue, Suite 900, Portland, OR 97201
(503) 833-4000
Website: http://www.transcanada.com/BC_System/
http://www.gastransmissionnw.com/company_info/
Date service began
December 2, 1961. The GTN System was the first fully automated natural gas pipeline in the U.S.
Length:
612 miles
Maximum allowable operating pressure
911 psi
Location of Pipeline
Begins at British Columbia-Idaho border, extends through northern Idaho, southeastern Washington and central Oregon, and ends at the Oregon-California border.
Interconnects
The GTN system interconnects with TransCanada's BC System at Kingsgate, British Columbia; with Williams (Northwest Pipeline Corporation) at Spokane and Palouse, Wash., and at Stanfield, Ore.; and with Pacific Gas & Electric Company and Tuscarora Gas Transmission Company at Malin, Ore. Multiple taps also connect the GTN System to Avista Corporation and Cascade Natural Gas.
Gas Source
Western Canada is the primary source, but the GTN System also receives U.S. domestic gas supplies at Stanfield, Ore.
System Capacity:
The GTN System can transport more than 2.9 billion cubic feet of gas a day (Bcf/d). More than 2.1 Bcf/d can be delivered to California, and up to 1 Bcf/d to the Pacific Northwest (though typical deliveries there are 600-700 million cubic feet a day).
Number of compressors
12 compressor stations (5 stations have three units, 7 stations have 2 units), spaced 50 to 60 miles apart along the pipeline, providing approximately 513,400 horsepower (ISO).
Other Offices
Business office in Calgary. District offices in Sandpoint (Idaho), Spokane (Wash.), Rosalia (Wash.), Wallula (Wash.), Redmond (Ore.) and Klamath Falls (Ore.). Maintenance and compressor stations located along pipeline route.
Number of GTN System employees
About 200
Year/location of incorporation
1957, in California
Ownership
The GTN System is part of TransCanada Corp., based in Calgary in the Canadian province of Alberta. TransCanada's network of about 25,600 miles of pipeline transports most of Western Canada's natural gas production to the fastest growing markets in Canada and the United States. TransCanada also owns, controls, or is constructing more than 4,700 megawatts of electric generation, enough to meet the needs of about 4.7 million average households.
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