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Regulated Industries > Energy >
Gas Utility Companies - Reporting to the WUTC

GAS UTILITIES reporting to
the Washington Utilities and Transportation Commission

Company Tariff pages are located below each Company's name.

Avista Corporation http://www.avistautilities.com/home.asp?view=res
P.O. Box 3727
Spokane, WA 99202
(800) 227-9187

Avista's Gas Tariffs
  • Provides natural gas service to about 300,000 customers in Eastern Washington, including Spokane and surrounding communities.

    Counties served: Adams, Asotin, Franklin, Grant, Klickitat, Lincoln, Skamania, Spokane, Stevens and Whitman Counties.


    Cascade Natural Gas Corporation http://www.cngc.com/
    8113 W. Grandridge Boulevard
    Kennewick, WA 99336


    Cascade's Gas Tariffs
  • Cascade serves approximately 210,000 customers in 91 cities in Washington and Oregon situated primarily along Williams Gas Pipeline. Major Washington locations include: Bellingham, Bremerton, Yakima, and Walla Walla.

    Counties served: Adams, Benton, Chelan, Cowlitz, Douglas, Franklin, Grant, Grays Harbor, Island, Kitsap, Mason, Skagit, Snohomish, Walla Walla, Whatcom and Yakima Counties.



    Northwest Natural Gas Company http://www.nwnatural.com/home/home.asp

    One Pacific Square
    220 N.W. Second Avenue
    Portland, OR 97209-3991
    (800) 422-4012

    Northwest Natural's Gas Tariffs
  • NW Natural gas serves approximately 600,000 residential, commercial, and industrial customers through 15,000 miles of mains and service lines in western Oregon and southwestern Washington.

    Areas served: Battleground, Bingen, Camas, La Center, North Bonneville, Ridgefield, Vancouver, Washougal, and White Salmon..



    Puget Sound Energy http://www.pse.com/
    P.O. Box 97034
    Bellevue, WA 98009-9734
    (888) 225-5773

    Puget's Gas Tafiffs
  • PSE serves approximately 581,000 gas customers in parts of Washington State.

    Areas served: King, Lewis, Pierce, Snohomish, Kittitas, Thurston Counties.




    Posted/updated: 11/09/2010
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