(Click on any state/province)

* NWPPA Members Alaska  Alaska Electric Light & Power Company * Alaska Power & Telephone Company Alaska Village Electric Cooperative * Anchorage Municipal Light & Power * Barrow Utilities & Electric Cooperative * Chugach Electric Association, Inc. * Copper Valley Electric Association * Cordova Electric Cooperative * Golden Valley Electric Association * Homer Electric Association * Ketchikan Public Utilities * Kodiak Electric Association * Kotzebue Electric Association * Matanuska Electric Association * McGrath Light & Power Co. Naknek Electric Association, Inc. * Nome Joint Utility System Nushagak Electric & Telephone Cooperative Inc. * Petersburg Municipal Light and Power * Seward Light and Power * Sitka Electric Dept. * Unalaska Electric Utility * Wrangell Light Department *

Arizona  Arizona Public Service Company Page Electric Utility  Salt River Project

California  Alameda Power & Telcom Anaheim Public Utilities Anza Electric Cooperative Azusa Light & Water Department City of Banning City of Gridley City of Headlsburg Electric Dept. City of Lompoc City of Shasta Lake Colton Electric Utility Hercules Municipal Utility * Imperial Irrigation District Lassen Municipal Utility District * Los Angeles Dept. of Water & Power Merced Irrigation District * Modesto Irrigation District Northern Calif. Power Agency * Pacific Gas and Electric Company Palo Alto Utilities Dept. Placer County Water Agency Plumas-Sierra Rural Electric Cooperative * Redding Electric Utility * Riverside Public Utilities Roseville Electric * Sacramento Municipal Utility District * San Diego Gas & Electric Company  Silicon Valley Power Southern California Edison Corporation - SCECorp Southern California Public Power Authority Surprise Valley Electrification Corp. Truckee Donner PUD Turlock Irrigation District * Ukiah Utilities Yuba County Water Agency

Idaho  Bonners Ferry Electric Department * City of Heyburn City of Rupert Electric Department * City of Soda Springs City of Weiser Clearwater Power Company * Fall River REC, Inc. * Idaho County Light & Power Cooperative Assoc. * Idaho Falls Power * Idaho Power Company Kootenai Electric Cooperative * Northern Lights Inc. * Rupert Electric Department * Salmon River Electric Cooperative United Electric Coop Inc. *

Montana  Beartooth Electric Cooperative, Inc. * Big Flat Electric Cooperative * Central Montana Electric Power Cooperative * Electric City Power, Inc. * Fergus Electric Cooperative * Flathead Electric Cooperative * Glacier Electric Cooperative * Goldenwest Electric Cooperative Hill County Electric Cooperative * Lincoln Electric Cooperative, Inc. * Lower Yellowstone REA * Marias River Electric Cooperative McCone Electric Cooperative Mid Yellowstone Electric Cooperative Mission Valley Power * Missoula Electric Cooperative * Northern Electric Cooperative Northwestern Energy (formerly Montana Power Co.) Park Electric Cooperative Ravalli County Electric Cooperative * Sheridan Electric Cooperative Southeast Electric Cooperative Southern Montana Electric G&T Cooperative, Inc. * Sun River Electric Cooperative, Inc * Troy Power & Light Upper Missouri G&T Electric Cooperative * Vigilante Electric Cooperative , Inc. Western Montana Electric G&T Cooperative, Inc. * Yellowstone Valley Electric Cooperative *

Nevada  Boulder City City of Fallon Mt. Wheeler Power Overton Power District No. 5 * Sierra Pacific Power Valley Electric Association, Inc. * Wells Rural Electric Company *

North Dakota Basin Electric

Oregon  Ashland, City Of Power & Telecommunications Utilities * Blachly-Lane County Cooperative Association * Bonneville Power Administration * Canby Utility Central Electric Co-op Central Lincoln PUD, Oregon * City of Bandon, Electric Dept. * City of Cascade Locks * City of Drain Light and Power City of Forest Grove, Light & Power Department * City of Monmouth * Clatskanie People's Utility District * Columbia Basin Electric Cooperative * Columbia River PUD * Consumers Power Inc. Coos-Curry Electric Cooperative, Inc. * Douglas Electric Cooperative, Oregon * Emerald P.U.D Lane County, Oregon * Eugene Water & Electric Board * Harney Electric Cooperative Hermiston Energy Services * Hood River Electric Cooperative * Lane Electric Cooperative * McMinnville Water and Light * Midstate Electric Cooperative, Inc. * Milton-Freewater Light and Power * Northern Wasco County PUD * Oregon Trail Electric Consumers Cooperative, Inc. * PacifiCorp * PNGC Power * Portland General Electric Salem Electric * Springfield Utility Board * Tillamook PUD * Umatilla Electric Cooperative Umpqua Indian Utility Cooperative * Wasco Electric Cooperative * West Oregon Electric Cooperative, Inc *

Washington  Asotin County PUD * Avista Corporation * Benton PUD * Benton Rural Electric Association * Big Bend Electric Cooperative * Centralia Light Department * Chelan County PUD * Cheney Light Department * Chewelah Light Department City of Blaine Public Works Department * City of Ellensburg * City of Milton * City of Richland Clallam County P.U.D. No. 1 * Clark Public Utilities * Columbia REA * Cowlitz County PUD * Douglas County PUD * Elmhurst Mutual Power & Light Co. * Energy Northwest * Ferry County PUD * Franklin PUD * Grant County PUD * Grays Harbor PUD * Inland Power & Light Company * Jefferson County PUD No. 1 Kittitas County PUD * Klickitat County PUD * Lakeview Light & Power * Lewis County PUD * Mason County PUD No. 1 * Mason County PUD No. 3 * Modern Electric Water Company * Nespelem Valley Electric Co-op * Okanogan County PUD No. 1 * Orcas Power & Light Company * Pacific County PUD No. 2 * Parkland Light & Water Company * Pend Oreille County PUD No. 1 * Peninsula Light Company * Port Angeles, City of * Puget Sound Energy * Richland Energy Services Seattle City Light * Skagit County PUD No. 1 * Skamania County PUD No. 1 * Snohomish County Public Utility District * Steilacoom, Town of * Sumas, City of * Tacoma Public Utilities * Tanner Electric Cooperative * Town of Eatonville * Vera Water & Power * PUD #1 of Whatcom County * Yakama Power *

Utah Bountiful City Light & Power Deseret Power Murray City Power Utah Association of Municipal Power Systems (UAMPS) Utah Municipal Power Agency

Wyoming  Big Horn Rural Electric Company City of Gillette Wyoming Municipal Power Agency

Canada  Alberta Watt Exchange ATCO Electric British Columbia Hydro and Power Authority City of Grand Forks * City of Medicine Hat City of Penticton * Enmax Corporation - Calgary's Electric System EPCOR Utilities Inc. Lethbridge Power Nelson Hydro * New Westminster Corporation Northwest Territories Power Red Deer Electric Light and Power Department Summerland Power

Associate Members A-Line E.D.S. ABB Inc. Accent Business Services Accu-Read Inc. Aclara Alcan Cable Corporation Allwire, Inc. Altec Industries Anderson & Wood Construction Company, Inc. Apogee Interactive, Inc. Aqua-Tronics Inc. ARNCO Corporation Ater Wynne LLP Autodesk Avista Energy, Inc. Avistar Inc. Barclays Captial. Bear Energy LP Bell Lumber & Pole Co. Blackburn Manufacturing Co., Inc. Border States Electric Supply Brown & Kysar, Inc. Browns Agency Northwest Bureau Veritas North America Burns & McDonnell Engineering Co. Cable Huston Benedict Haagensen & Lloyd LLP Carlson Sales Christenson Electric, Inc. Christy Concrete Products Clevest Solutions CoBank Commonwealth Associates, Inc. Composite Materials Technology (CMT) Constellation Energy Commodities Group Convectair Inc. Cooper Power Systems Cooperative Benefits and Financail Services, LLC Cooperative Response Center CVO Electrical Systems LLC D'Ewart Representatives L.L.C. D. Hittle & Associates Daffron & Associates, Inc. David Hatch & Associates DCS — Morgan/Basler Electric Decoria, Maichel & Teague Designer Decal, Inc. DIS-TRAN DJ's Electrical, Inc. DMC — Designed Metal Connections Dryden & LaRue Inc. Economic & Financial Strategies, LLC EES Consulting Elcon Associates Inc. Electrical Consultants Inc. Elster EnergyIdeas Clearinghouse EnerVision Inc. Engineered Solutions Group enXco ERMCO Transformers ETG, Inc. Evergreen Financial Services Evergreen Job & Safety Training FCI/Burndy Federated Rural Electric Insurance Exchange FLIR Systems General Electric Co. General Pacific, Inc. Genics, Inc. GeoEngineers Inc. Givens Pursley LLP Goldman, Sachs & Co. Gordon, Thomas, Honeywell, Malanca, Peterson & Daheim, PLLC Gore Electric Co., Inc. H2 Pre-Cast Inc. H2E, Inc. Hansen Supply Company Hanson Pipe & Precast Hardy Energy Consulting HD Supply Utilities, Ltd. HDR Engineering Hees Enterprises Helios Strategies Henkels & McCoy Inc. Hi-Line Engineering, LLC — A GDS Company Highpoint Power Systems, Inc. H J Arnett Industries Hogg & Davis Inc. Houston Wire & Cable Company Hubbell Power Systems Inc. IGI Resources, Inc. Independent Inspection Co. Inner-Tite Corp. Intec Services, Inc. Itron J P Morgan Securities Jaco Environmental Inc. JBR Environmental Consultants Inc. Joslyn Hi-Voltage K-Line Insulators USA L&S Electric, Inc. Landis+Gyr, Inc. Lands Energy Consulting Lefor Utility Sales & Associates, Inc. Lehman Brothers Lift-It Manufacturing Co. M.W. Bevins Company Marne & Associates, Inc. McFarland Cascade McIntosh Utility Services & Training (MUST) McKaig Evergreen McLaren Inc. Megger Merrill Lynch - Public Finance Grp. & Commodities Microsoft Corp. Milliman Consultants Montana State University Morgan Mequire Morgan Stanley Moss Adams LLP Mountain Power Construction Company MSE-Tetragenics MWH National Information Solutions Cooperative (NISC) National Rural Telecommunications Cooperative (NRTC) National Rural Utilities Cooperative Cooperative Finance Corp. (NRU CFC) Niagara Conservation Corporation Nielson, Hurtado & Associates NoaNet North Pacific Northwest Energy Efficiency Alliance Northwest Line Constructors Chapter Northwest Lineman College Northwest Power & Conservation Council Northwest Utility Sales, Inc. Northwestern Energy, LLC NOVINIUM NuEra Technologies Ocean Renewable Energy Coalition Oil Re-Refining Co. Inc Oldcastle Precast Origin Geosystems, Inc. Osmose Utilities Services, Inc. Pacific Rigging and Heavy Haul, Inc. Pacific Truck Colors Pacific NW Utilities Conference Committee (PNUCC) Pacific Underwriters Corp. PacifiCorp Peak Oilfield Service Company Pencell Plastics, Inc. Pennington Crossarm Co. Percipio Consulting Group, Inc. Platt Electric Supply PNGC Power Pole Maintenance Company Pondera Engineers, LLC Potelcom Supply, Inc. Potti Corp. USA, LLC POWER Engineers, Inc. Power Systems Consultants Inc. Powerex Powertrusion Products Professional Computer Systems (PCS) ProGlass Inc. Protective Equipment Testing Laboratory Prysmian Cables & Systems North America Puget Sound Energy Quality Resource & Services Inc. Radar Engineers RAI-Utility Automation RYCOM Instruments, Inc. Ruralite Services S&C Electric Co. Sabre Tubular Structures Sage Payment Solutions NW Division Schweitzer Engineering Laboratories, Inc. Scott Engineering, Inc. S.D. Myers Seattle-Northwest Securities Corp. SEDC Sempra Energy Trading Corp. Shamrock Supply Company, Inc. Shaw Energy Delivery Services Shell Trading Gas & Power Sherman Reilly Inc Siemens Power Transmission & Distribution SlipNot Metal Safety Flooring SML (Scott M. Lindsay) Consulting SNC-Lavalin ATP Inc. Solar Electric Power Association Solomon Corporation Sound & Sea Technology, Inc. Specialty Engineering, Inc. (A Division of Engineered Solutions Group) Stanley Hydraulic Tools Stantec Consulting, Inc. Stephens, McCarthy, Lancaster, LLC Strategies 360 Substation Technical Resources Inc. System Operations Success International T-Line Electric TCI of Alabama, LLC Tech Products, Inc. Technical Sales — NW Terex Utilities The Energy Authority The Saturn Partners, Inc. Thomas & Betts Utility Division Tiocco Filtration Systems TransAlta Energy Marketing (US), Inc. Transformer Protector Corp. Transformer Technologies Trayer Engineering Corp. TriAxis Engineering, Inc. Turkenburg Power Systems Inc. United Services Group Utility Systems & Applications UtilX Corp . Valmont-Newmark Van Ness Feldman Veolia Environmental Services, LLC Vivid Learning Systems, Inc. Wagner-Smith Equipment Wartsila North America, Inc. Waukesha Electric Systems Wesco Distribution Inc., Utility Sales Western Area Power Administration Western Wood Preservers Institute Wilson Construction Yukon Energy Corp.

Associations/Agencies Alaska Power Association (formerly ARECA) Alberta Government American Public Power Association (APPA) Association of Washington Cities (AWC) Association of Yukon Communities Bonneville Environmental Foundation California Municipal Utilities Association (CMUA) Canadian Electricity Association Department of Energy Edison Electric Institute (EEI) Electric League of the Pacific Northwest Electric Power Research Institute (EPRI) Energy Supply Association of Australia Energy Information Administration Federal Energy and Regulatory Commission (FERC) Foundation for Water and Energy Education General Accounting Office Golden State Power Cooperative Idaho Consumer-Owned Utilities Association Intermountain Rural Electric Association International Brotherhood of Electrical Workers (IBEW) Large Public Power Council Montana Electric Cooperative Association National Association of Regulatory Utility Commissioners National Electrical Contractors Association National Energy Foundation National Rural Electric Cooperative Association (NRECA) National Rural Utilities Cooperative Finance Corporation (CFC) Nevada Rural Electric Association Northeast Public Power Association Northwest Gas Association Northwest Power and Conservation Council Northwest Power Pool Northwest Requirements Utilities Northwest RiverPartners NW Energy Coalition Oregon PUD Association Oregon Rural Electric Cooperative Association OSHA Pacific Northwest Utilities Conference Committee Pacific Northwest Waterways Association Public Power Alliance (PPA) Public Power Council (PPC) Public Utility Risk Management Services Ruralite Services Inc. South Alta Rural Electrification Association Southwestern Power Administration Tennessee Valley Authority THOMAS: Legislative Information on the Internet University of Washington Power Engineering Professional Program U.S. Department of Energy Efficiency and Renewable Energy US Environmental Protection Agency (EPA) US Nuclear Regulatory Commission Utah Associated Municipal Power Systems (UAMPS) Washington PUD Association Washington Rural Electric Cooperative Association Western Area Power Administration Western Area Power Administration - Energy Services Program Western Electricity Coordinating Council Western Energy Institute Wyoming Rural Electric Association

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