Alabama
- Alabama Rural Electric Association of Cooperatives (AREA)
- Arab Electric Cooperative
- Baldwin EMC
- Black Warrior EMC
- Central Alabama Electric Cooperative (CAEC)
- Cherokee Electric Cooperative
- City of Florence Utilities Electricity Department
- City of Troy
- Clarke-Washington EMC
- Coosa Valley Electric Cooperative
- Covington Electric Cooperative
- Cullman Electric Cooperative
- Dixie Electric Cooperative
- Franklin Electric Cooperative
- Joe Wheeler EMC
- Marshall-DeKalb Electric Cooperative
- North Alabama Electric Cooperative
- Pea River Electric Cooperative
- Pioneer Electric Cooperative
- Sand Mountain Electric Cooperative
- South Alabama Electric Cooperative
- Southern Pine Electric Cooperative
- Tallapoosa River Electric Cooperative
- Tombigbee Electric Cooperative
- Wiregrass Electric Cooperative
Arizona
Arkansas
- Arkansas Valley Electric Cooperative Corporation
- Ashley-Chicot Electric Cooperative, Inc.
- C & L Electric Cooperative
- Carroll Electric Cooperative Corporation
- Clay County Electric Cooperative
- Craighead Electric Cooperative Corporation
- Electric Cooperatives of Arkansas
- Farmers Electric Cooperative Corporation (AR)
- First Electric Cooperative
- Mississippi County Electric Cooperative
- North Arkansas Electric Cooperative
- Ouachita Electric Cooperative
- Ozarks Electric Cooperative
- Petit Jean Electric Cooperative
- Rich Mountain Electric Cooperative
- South Central Arkansas Electric Cooperative
- Southwest Arkansas Electric Cooperative Corp.
- Woodruff Electric Cooperative Corp.
California
Colorado
- Colorado Rural Electric Association (CREA)
- Delta-Montrose Electric Association (DMEA)
- Empire Electric Association, Inc.
- Grand Valley Power
- Gunnison County Electric
- High West Energy
- Highline Electric Association
- Holy Cross Energy
- K.C. Electric Association
- La Plata Electric Association, Inc.
- Moon Lake Electric Association, Inc.
- Morgan County Rural Electric Association
- Mountain Parks Electric Inc.
- Mountain View Electric Association
- Poudre Valley REA
- San Isabel Electric Association, Inc.
- San Luis Valley REC
- San Miguel Power Association
- Sangre de Cristo Electric
- Southeast Colorado Power Association
- Tri-County Electric Cooperative, Inc., Oklahoma
- Tri-State
- United Power, Inc.
- White River Electric Association
- Y-W Electric Association, Inc.
- Yampa Valley Electric Association Inc.
District of Columbia
Florida
Georgia
- Carroll Electric Membership Corporation
- Coweta-Fayette EMC
- Diverse Power, Inc.
- Middle Georgia EMC
- Mitchell EMC
- Sumter EMC
Idaho
Illinois
- Adams Electric Cooperative
- Ameren Illinois
- Association of Illinois Electric Cooperatives (AIEC)
- City of Naperville
- City Water, Light & Power (CWLP)
- Clay Electric Cooperative, Inc.
- Clinton County Electric Cooperative
- Coles-Moultrie Electric Cooperative
- ComEd, an Exelon Company
- Corn Belt Energy Corporation (IL)
- Dairyland Power Cooperative
- Eastern Illini Electric Cooperative
- Egyptian Electric Cooperative Association
- EnerStar Electric Cooperative
- Exelon Corporation
- Illinois Rural Electric Cooperative
- Jo-Carroll Energy
- M.J.M. Electric Cooperative, Inc.
- McDonough Power Cooperative
- Menard Electric Cooperative
- Monroe County Electric Cooperative, Inc.
- Mt. Carmel Public Utility
- Norris Electric Cooperative
- Prairie Power, Inc.
- Rock Energy Cooperative
- Rural Electric Convenience Cooperative
- Shelby Electric Cooperative
- Southeastern Illinois Electric Cooperative
- Southern Illinois Electric Cooperative
- Spoon River Electric Cooperative, Inc.
- Tri-County Electric Cooperative, Inc., Illinois
- Wayne-White Counties Electric Cooperative
- Western Illinois Electrical Cooperative
Indiana
- Carroll White Rural Electric Membership Corporation
- Clark County REMC
- Crawfordsville Electric Light & Power
- Hendricks Power Cooperative
- Henry County REMC
- Noble County REMC
- Parke County REMC
Iowa
- Access Energy Cooperative
- Allamakee-Clayton Elec. Coop, Inc.
- Boone Valley Electric Cooperative
- Butler County Rural Electric Cooperative (IA)
- Calhoun County REC
- Central Iowa Power Cooperative (CIPCO)
- Chariton Valley Electric Coop, Inc.
- Clarke Electric Cooperative, Inc.
- Consumers Energy
- Corn Belt Power Cooperative
- Dairyland Power Cooperative
- East-Central Iowa REC
- Eastern Iowa Light & Power Cooperative
- Farmers Electric Cooperative Kalona (IA)
- Farmers Electric Cooperative, Inc. (IA)
- Franklin Rural Electric Cooperative (REC)
- Grundy County Rural Electric Cooperative (IA)
- Guthrie County REC
- Harrison County REC
- Heartland Power Cooperative
- Iowa Association of Electric Cooperatives
- Iowa Lakes Electric Cooperative
- Linn County Rural Electric Cooperative
- Lyon Rural Electric Cooperative
- Maquoketa Valley Electric Cooperative
- Midland Power Cooperative
- MiEnergy Cooperative
- Nishnabotna Valley REC
- North West Rural Electric Cooperative
- Northwest Iowa Power Cooperative
- Osceola Electric Cooperative, Inc.
- Pella Co-op Electric Assn.
- Prairie Energy Cooperative
- Raccoon Valley Electric Cooperative
- Southern Iowa Electric Cooperative
- Southwest Iowa Rural Electric Co-op
- T.I.P. Rural Electric Cooperative
- Waverly Utilties
- Western Iowa Power Cooperative
- Woodbury County REC
Kansas
- 4 Rivers Electric Cooperative, Inc.
- Bluestem Electric Cooperative
- Brown-Atchison Electric Cooperative
- Butler Electric Cooperative Assn. Inc.
- Caney Valley Electric Cooperative Assn.
- City of Belleville, KS
- City of Summerfield, KS
- City of Webber
- CMS Electric Cooperative, Inc.
- Doniphan Electric Coop Association, Inc.
- DS&O Rural Electric Cooperative Assn., Inc.
- Flint Hills Rural Electric Cooperative Association, Inc.
- FreeState Electric Cooperative
- Heartland Rural Electric Cooperative
- Kansas Electric Cooperatives, Inc.
- Lane-Scott Electric Cooperative
- Midwest Energy, Inc.
- Nebraska Public Power District
- Nemaha-Marshall Electric Cooperative Association, Inc.
- Ninnescah Electric Cooperative
- Pioneer Electric Cooperative, Inc. (KS)
- Prairie Land Electric Cooperative, Inc.
- Rolling Hills Electric Cooperative, Inc.
- Sedgwick County Electric Cooperative Assn.
- Southern Pioneer Electric Cooperative
- Sumner-Cowley Electric Cooperative, Inc.
- Tri-County Electric Cooperative, Inc., Oklahoma
- Twin Valley Electric Cooperative
- Victory Electric Cooperative Association, Inc.
- Western Cooperative Electric
- Wheatland Electric Cooperative
Kentucky
- Big Rivers Electric Corporation
- Jackson Purchase Energy Corporation
- Kenergy Corporation
- Meade County Rural Electric Cooperative Corporation
Maine
Maryland
Michigan
- Cloverland Electric Cooperative
- Coldwater Board of Public Utilities
- Grand Haven Board of Light & Power
- Traverse City Light & Power
Minnesota
- Agralite Electric Cooperative
- Beltrami Electric Cooperative
- BENCO Electric Cooperative
- Cooperative Light & Power
- Crow Wing Power
- Dairyland Power Cooperative
- East Central Energy (MN)
- East River Electric Power Cooperative
- Freeborn-Mower Electric Cooperative
- Itasca-Mantrap Cooperative Electrical Association
- Kandiyohi Power Cooperative
- Lake Country Power
- Lyon-Lincoln Electric Cooperative, Inc.
- MiEnergy Cooperative
- Minnesota Valley Cooperative Light & Power Association
- Moorhead Public Service
- New Ulm Public Utilities
- Nobles Cooperative Electric
- North Star Electric Co-op., Inc.
- People’s Energy Cooperative
- PKM Electric Cooperative
- Red Lake Electric Cooperative, Inc.
- Red River Valley (MN)
- Redwood Electric Cooperative
- Renville-Sibley Cooperative Power Association
- Roseau Electric Cooperative Inc
- Sioux Valley Energy
- South Central Electric Association
- Steele-Waseca Cooperative Electric Utility
- Traverse Electric Cooperative (SD)
- Wild Rice Electric Cooperative, Inc
Mississippi
Missouri
- Associated Electric Cooperative Inc.
- Association of Missouri Electric Cooperatives (AMEC)
- Atchison-Holt Electric Cooperative
- Barry Electric Cooperative
- Barton County Electric Cooperative
- Black River Electric Cooperative
- Boone Electric Cooperative
- Callaway Electric Cooperative
- Central Electric Power Cooperative
- Central Missouri Electric Cooperative
- Citizens Electric Corporation
- Co-Mo Electric Cooperative
- Consolidated Electric Cooperative
- Crawford Electric Cooperative
- Cuivre River Electric Cooperative
- Farmers’ Electric Cooperative (MO)
- Gascosage Electric Cooperative
- Grundy Electric Cooperative, Inc. (MO)
- Howard Electric Cooperative
- Howell-Oregon Electric Cooperative, Inc.
- Intercounty Electric Cooperative
- KAMO Power
- Laclede Electric Cooperative
- Lewis County Rural Electric Cooperative
- M&A Electric Power Cooperative
- Macon Electric Cooperative
- Missouri Rural Electric Cooperative (REC)
- N.W. Electric Power Cooperative, Inc
- N.W. Electric Power Cooperative, Inc.
- New-Mac Electric Cooperative, Inc.
- North Central Missouri Electric Cooperative
- Northeast Missouri Electric Power Cooperative
- Osage Valley Electric Cooperative
- Ozark Border Electric Cooperative
- Ozark Electric Cooperative
- Pemiscot-Dunklin Electric Cooperative
- Platte-Clay Electric Cooperative
- Ralls County Electric Cooperative
- Sac Osage Electric Cooperative
- Se-Ma-No Electric Cooperative
- SEMO Electric Cooperative
- Sho-Me Power Electric Cooperative
- Southwest Electric Cooperative
- Three Rivers Electric Cooperative
- Tri-County Electric Cooperative, Missouri
- United Electric Cooperative, Inc.
- Webster Electric Cooperative
- West Central Electric Cooperative, Inc.
- White River Valley Electric Cooperative
Montana
- Beartooth Electric Co-op, Inc
- Big Horn REA
- Lower Yellowstone Rural Electric Cooperative
- Mid-Yellowstone Electric Cooperative
- Powder River Energy Corporation
- Southeast Electric Cooperative
Nebraska
- Burt County Public Power District
- Butler Public Power District
- Cedar-Knox Public Power District
- Cherry-Todd Electric Cooperative, Inc.
- Chimney Rock Public Power District
- City of Arapahoe
- City of Arapahoe
- City of Auburn
- City of Battle Creek
- City of Beatrice
- City of Cambridge
- City of Central City
- City of Cozad
- City of David City
- City of Deshler
- City of Franklin
- City of Friend
- City of Gothenburg
- City of Grand Island Utilities
- City of Holdrege
- City of Lexington
- City of Lyons
- City of Madison
- City of Minden
- City of Nelson
- City of North Platte
- City of Ord
- City of Randolph
- City of Scribner
- City of Seward
- City of South Sioux City
- City of Summerfield, KS
- City of Superior
- City of Sutton
- City of Valentine
- City of Wahoo
- City of Wakefield
- City of Wayne
- City of Webber
- City of Wilber
- City of Wymore
- Cornhusker Public Power District
- Cuming County Public Power District
- Custer Public Power District
- Dawson Public Power District
- Elkhorn Rural Public Power District
- High West Energy
- Howard Greeley Rural Public Power District
- KBR Rural Public Power District
- Lacreek Electric Association, Inc.
- Loup Power District
- Loup Valleys Rural Public Power District
- McCook Public Power District
- Midwest Electric Cooperative Corporation
- Nebraska Public Power District
- Nebraska Rural Electric Association (NREA)
- Niobrara Electric Association, Inc.
- Niobrara Valley Electric Membership Corporation
- Norris Public Power District
- North Central Public Power District
- Northeast Power
- Northwest Rural Public Power District
- Panhandle Rural Electric Membership Association
- Perennial Public Power District
- Polk County Rural Public Power District
- Roosevelt Public Power District
- South Central Public Power District
- Southern Public Power District
- Southwest Public Power District
- Stanton County Public Power District
- Tri-State
- Twin Valleys Public Power District
- Village of Bradshaw
- Village of Brainard
- Village of Chester
- Village of Davenport
- Village of DeWitt
- Village of Dorchester
- Village of Fairmont
- Village of Hemingford
- Village of Hildreth
- Village of Lodgepole
- Village of Mullen
- Village of Prague
- Village of Walthill, NE
- Village of Wauneta
- Village of Wilcox
- Wheat Belt PPD
- Wyrulec Company
Nevada
New Jersey
New Mexico
- Central New Mexico Electric Cooperative, Inc.
- Central Valley Electric Cooperative, Inc.
- Columbus Electric Cooperative
- Continental Divide Electric Cooperative, Inc.
- Farmers’ Electric Cooperative, Inc. of New Mexico
- Jemez Mountains Electric Cooperative
- Lea County Electric Cooperative, Inc.
- Mora-San Miguel Electric Cooperative, Inc.
- New Mexico Rural Electric Cooperatives Association, Inc
- Northern Rio Arriba Electric Cooperative, Inc.
- Otero County Electric Cooperative Inc
- Roosevelt County Electric Cooperative, Inc.
- Sierra Electric Cooperative, Inc.
- Socorro Electric Cooperative, Inc.
- Southwestern Electric Cooperative, Inc.
- Springer Electric Cooperative, Inc.
- Tri-State
- Western Farmers Electric Cooperative (WFEC)
New York
- DCEC Delaware County Electric Cooperative
- Oneida-Madison Electric Co-op., Inc.
- Otsego Electric Cooperative, Inc.
- Steuben Rural Electric Cooperative
North Carolina
- BlueRidge Energy
- Edgecombe-Martin EMC
- Pee Dee Electric Cooperative
- Randolph Electric Membership Corporation
- Surry-Yadkin Electric Membership Corporation
- Tideland EMC
North Dakota
- Cass County Electric Cooperative
- Lower Yellowstone Rural Electric Cooperative
- McKenzie Electric Cooperative
- Nodak Electric Cooperative
- Traverse Electric Cooperative (SD)
Ohio
- City of Hamilton
- Lorain-Medina Rural Electric Cooperative
- North Central Electric Co-op, Inc.
- Paulding-Putnam Electric Cooperative
- Union Rural Electric Cooperative
Oklahoma
- Alfalfa Electric Cooperative, Inc.
- Canadian Valley Electric Cooperative, Inc.
- Central Rural Electric Cooperative
- Choctaw Electric Cooperative
- Cimarron Electric Cooperative
- CKenergy Electric Cooperative, Inc.
- Cookson Hills Electric Cooperative, Inc.
- Cotton Electric Cooperative
- East Central Oklahoma Electric Cooperative, Inc.
- Harmon Electric Association, Inc.
- Indian Electric Cooperative, Inc.
- KAMO Power
- Kay Electric Cooperative
- Kiamichi Electric Cooperative, Inc.
- Lake Region Electric Cooperative, Inc.
- Northeast Oklahoma Electric Cooperative
- Northfork Electric Cooperative
- Northwestern Electric Cooperative
- Oklahoma Association of Electric Cooperatives (OAEC)
- Oklahoma Electric Cooperative
- People’s Electric Cooperative
- Red River Valley Rural Electric
- Rural Electric Cooperative
- Southeastern Electric Cooperative, Inc.
- Southwest Rural Electric Association
- Tri-County Electric Cooperative, Inc., Oklahoma
- Verdigris Valley Electric Cooperative
- Western Farmers Electric Cooperative (WFEC)
Oregon
- Blachly-Lane Electric Cooperative
- Midstate Electric Cooperative, Inc
- Oregon Trail Electric Cooperative
- Tillamook People’s Utility District
Pennsylvania
- Adams Electric Cooperative, Inc. (PA)
- Allegheny Electric Cooperative
- Bedford Rural Electric Cooperative, Inc.
- BGE, an Exelon Company
- Central Electric Cooperative, Inc. (PA)
- Citizens’ Electric Company
- Claverack Rural Electric Cooperative, Inc.
- New Enterprise Rural Electric Cooperative, Inc.
- Northwestern Rural Electric Cooperative Association, Inc. (PA)
- PECO, an Exelon Company
- Pennsylvania Rural Electric Association
- REA Energy Cooperative Inc.
- Somerset Rural Electric Cooperative, Inc.
- Sullivan County Rural Electric Cooperative, Inc.
- Tri-County Rural Electric Cooperative, Inc., (PA)
- United Electric Cooperative, Inc. (PA)
- Valley Rural Electric Cooperative, Inc.
- Warren Electric Cooperative, Inc. (PA)
South Carolina
South Dakota
- Bon Homme Yankton Electric Association
- Central Electric Cooperative Association
- Charles Mix Electric
- Cherry-Todd Electric Cooperative, Inc.
- City of Elk Point
- Clay Union Electric Corporation
- Codington-Clark Electric Cooperative, Inc.
- Dakota Energy Cooperative, Inc.
- Douglas Electric Cooperative, Inc.
- East River Electric Power Cooperative
- FEM Electric Cooperative
- H-D Electric Cooperative, Inc.
- Kingsbury Electric Cooperative
- Lacreek Electric Association, Inc.
- Lake Region Electric Cooperative (SD)
- Lyon-Lincoln Electric Cooperative, Inc.
- Niobrara Electric Association, Inc.
- Northern Electric Cooperative
- Oahe Electric
- Sioux Valley Energy
- Southeastern Electric Cooperative, Inc. (SD)
- Traverse Electric Cooperative (SD)
- Union County Electric Cooperative
- Whetstone Valley Electric Cooperative
Tennessee
Texas
- Big Country Electric Cooperative, Inc.
- Bowie-Cass Electric Cooperative
- Brownsville Public Utilities Board
- City of Greenville
- Fayette Electric Cooperative, Inc.
- Grayson-Collin Electric Cooperative
- Jackson Electric Cooperative Inc.
- Jasper-Newton Electric Cooperative, Inc.
- Kerrville Public Utility Board
- Lighthouse Electric Cooperative, Inc.
- Lyntegar Electric Cooperative
- Navasota Valley Electric Cooperative, Inc.
- New Braunfels Utilities
- San Bernard Electric Cooperative, Inc.
- South Plains Electric Cooperative, Inc.
- Southwest Rural Electric Association
- Wharton County Electric Cooperative
Utah
- Bridger Valley Electric Association, Inc.
- Moon Lake Electric Association, Inc.
- Raft River Rural Electric Co-op, Inc.
Virginia
Washington
- Big Bend Electric Cooperative, Inc.
- Elmhurst Mutual Power & Light
- Franklin Public Utility District
- Kittitas PUD
- Vera Water & Power
Wisconsin
- Adams-Columbia Electric Cooperative
- Barron Electric Cooperative
- Bayfield Electric Cooperative, Inc.
- Central Wisconsin Electric Cooperative
- Chippewa Valley Electric Cooperative
- Clark Electric Cooperative
- Dairyland Power Cooperative
- Dunn Energy Cooperative
- East Central Energy (MN)
- Eau Claire Energy Cooperative
- Jackson Electric Cooperative
- Jump River Electric Cooperative, Inc.
- Oakdale Electric Cooperative
- Oconto Electric Cooperative
- Pierce-Pepin Cooperative Services
- Polk-Burnett Electric Cooperative
- Price Electric Cooperative
- Richland Electric Cooperative
- Riverland Energy Cooperative
- Rock Energy Cooperative
- Scenic Rivers Energy Cooperative
- St. Croix Electric Cooperative
- Taylor Electric Cooperative, WI
- Vernon Electric Cooperative
- Washington Island Electric Cooperative, Inc.
- Wisconsin Electric Cooperative Association
Wyoming
- Big Horn REA
- Bridger Valley Electric Association, Inc.
- Carbon Power and Light
- Garland Light and Power Company
- High Plains Power Inc.
- High West Energy
- Lower Valley Energy
- Niobrara Electric Association, Inc.
- Powder River Energy Corporation
- Tri-State
- Waverly Utilities
- Wheatland Rural Electric Association (REA)
- Wyoming Rural Electric Association (WREA)
- Wyrulec Company