Alabama
Electric: Alabama Power
Gas: Spire Alabama
Alaska
Electric: Alaska Electric Light & Power (AEL&P); Chugach Electric (coop, major)
Gas: ENSTAR Natural Gas
Arizona
Electric: Arizona Public Service (APS); Tucson Electric Power (TEP); UNS Electric; (SRP is large but quasi-public)
Gas: Southwest Gas
Arkansas
Electric: Entergy Arkansas; SWEPCO (AEP); OG&E (Fort Smith area)
Gas: Summit Utilities Arkansas
California
Electric: Pacific Gas & Electric (PG&E); Southern California Edison (SCE); San Diego Gas & Electric (SDG&E)
Gas: PG&E Gas; SoCalGas; SDG&E Gas
Colorado
Electric: Xcel Energy (Public Service Co. of CO); Black Hills Energy
Gas: Xcel Energy; Black Hills Energy; Atmos Energy
Connecticut
Electric: Eversource; United Illuminating (UI)
Gas: Eversource Gas; Connecticut Natural Gas (CNG); Southern Connecticut Gas (SCG)
Delaware
Electric: Delmarva Power
Gas: Chesapeake Utilities (Delaware Division)
District of Columbia
Electric: Pepco
Gas: Washington Gas
Florida
Electric: Florida Power & Light (FPL); Duke Energy Florida; Tampa Electric (TECO); Florida Public Utilities (FPU)
Gas: TECO Peoples Gas; Florida City Gas; Florida Public Utilities (FPU)
Georgia
Electric: Georgia Power
Gas: Atlanta Gas Light (AGL)
Hawaii
Electric: Hawaiian Electric (HECO, incl. O‘ahu/Maui/Hawai‘i Island ops)
Gas: Hawaii Gas
Idaho
Electric: Idaho Power; Avista; Rocky Mountain Power
Gas: Intermountain Gas; Avista
Illinois
Electric: ComEd; Ameren Illinois; MidAmerican Energy (west)
Gas: Nicor Gas; Peoples Gas; North Shore Gas; Ameren Illinois Gas; MidAmerican Gas
Indiana
Electric: Duke Energy Indiana; AES Indiana (IPL); NIPSCO; Indiana Michigan Power (AEP); CenterPoint Energy (Vectren South)
Gas: NIPSCO Gas; CenterPoint Energy (Vectren) Gas; Citizens Energy Group (Indy, municipal)
Iowa
Electric: MidAmerican Energy; Alliant Energy (Interstate Power & Light)
Gas: MidAmerican; Alliant/IPL; Black Hills Energy
Kansas
Electric: Evergy; Liberty (Empire District)
Gas: Kansas Gas Service (ONE Gas); Atmos Energy; Black Hills Energy
Kentucky
Electric: Kentucky Utilities (KU); Louisville Gas & Electric (LG&E); Duke Energy Kentucky; Kentucky Power (AEP)
Gas: LG&E Gas; Columbia Gas of Kentucky; Delta Natural Gas; Duke Energy Kentucky Gas
Louisiana
Electric: Entergy Louisiana; Cleco Power; SWEPCO (AEP)
Gas: Atmos Energy; CenterPoint Energy (select areas)
Maine
Electric: Central Maine Power (CMP); Versant Power
Gas: Unitil (Northern Utilities); Summit Natural Gas of Maine; Bangor Natural Gas
Maryland
Electric: BGE; Pepco; Delmarva Power; Potomac Edison (FirstEnergy)
Gas: BGE Gas; Washington Gas; Columbia Gas of Maryland; Elkton Gas
Massachusetts
Electric: Eversource MA; National Grid MA; Unitil MA
Gas: Eversource Gas (formerly Columbia Gas of MA assets); National Grid Gas; Berkshire Gas; Unitil Gas; Liberty Utilities
Michigan
Electric: DTE Electric; Consumers Energy; Indiana Michigan Power; Upper Michigan Energy Resources (UMERC); UPPCO; MG&E (tiny slice via wholesale—primary retail is above)
Gas: DTE Gas; Consumers Energy Gas; SEMCO Energy; Michigan Gas Utilities (MGU)
Minnesota
Electric: Xcel Energy; Minnesota Power (ALLETE); Otter Tail Power
Gas: CenterPoint Energy; Xcel Energy Gas; Minnesota Energy Resources (MERC)
Mississippi
Electric: Entergy Mississippi; Mississippi Power
Gas: Atmos Energy; CenterPoint Energy (select areas)
Missouri
Electric: Ameren Missouri; Evergy Missouri; Liberty (Empire District)
Gas: Spire Missouri; Liberty Utilities Gas
Montana
Electric: NorthWestern Energy; Montana-Dakota Utilities (MDU)
Gas: NorthWestern Energy; MDU
Nebraska
Electric: Nebraska Public Power District (NPPD); Omaha Public Power District (OPPD); Lincoln Electric System (LES) (public power state)
Gas: Black Hills Energy; Metropolitan Utilities District (MUD, Omaha – municipal)
Nevada
Electric: NV Energy (Nevada Power/Sierra Pacific)
Gas: Southwest Gas
New Hampshire
Electric: Eversource NH; Unitil; Liberty Utilities (electric)
Gas: Unitil Gas; Liberty Utilities Gas
New Jersey
Electric: PSE&G; Jersey Central Power & Light (JCP&L); Atlantic City Electric
Gas: PSE&G Gas; New Jersey Natural Gas; Elizabethtown Gas; South Jersey Gas
New Mexico
Electric: PNM; El Paso Electric; Xcel Energy (SPS)
Gas: New Mexico Gas Company; Zia Natural Gas (regional)
New York
Electric: Con Edison; National Grid NY; NYSEG; RG&E; Central Hudson; Orange & Rockland (O&R)
Gas: Con Edison Gas; National Grid Gas; NYSEG Gas; RG&E Gas; Central Hudson Gas
North Carolina
Electric: Duke Energy Carolinas; Duke Energy Progress; Dominion Energy NC (electric)
Gas: Piedmont Natural Gas; Dominion Energy North Carolina Gas (PSNC)
North Dakota
Electric: Montana-Dakota Utilities; Otter Tail Power; Xcel Energy (Fargo area)
Gas: MDU; Xcel Energy Gas
Ohio
Electric: AEP Ohio; FirstEnergy (Ohio Edison, Toledo Edison, The Illuminating Co.); Duke Energy Ohio; AES Ohio (Dayton Power & Light)
Gas: Columbia Gas of Ohio; Dominion Energy Ohio; CenterPoint Energy Ohio; Duke Energy Ohio Gas
Oklahoma
Electric: OG&E; PSO (Public Service Co. of Oklahoma, AEP); Liberty (Empire)
Gas: Oklahoma Natural Gas (ONE Gas)
Oregon
Electric: Portland General Electric; Pacific Power (PacifiCorp); Idaho Power (east)
Gas: NW Natural; Avista; Cascade Natural Gas
Pennsylvania
Electric: PECO; PPL Electric; Duquesne Light; FirstEnergy PA (Met-Ed, Penelec, Penn Power, West Penn Power)
Gas: Philadelphia Gas Works (PGW); Peoples Natural Gas; UGI Utilities; Columbia Gas of Pennsylvania; National Fuel Gas
Rhode Island
Electric: Rhode Island Energy
Gas: Rhode Island Energy Gas
South Carolina
Electric: Dominion Energy South Carolina; Duke Energy Carolinas; Duke Energy Progress; Santee Cooper (state-owned)
Gas: Dominion Energy South Carolina Gas; Piedmont Natural Gas (select areas)
South Dakota
Electric: Xcel Energy; Black Hills Energy; NorthWestern Energy; MDU (regional)
Gas: Black Hills Energy; MDU; MidAmerican (Sioux Falls area)
Tennessee
Electric: (Retail via local power companies buying from TVA) Memphis Light, Gas & Water (MLGW); Nashville Electric Service (NES); Knoxville Utilities Board (KUB)
Gas: Piedmont Natural Gas; Chattanooga Gas; Knoxville Utilities Board Gas; MLGW Gas
Texas
Electric (TDUs/IOUs): Oncor; CenterPoint Energy; AEP Texas; Texas-New Mexico Power; plus regulated areas: Entergy Texas; Xcel/SPS (Panhandle); CPS Energy (San Antonio, muni); Austin Energy (muni)
Gas: Atmos Energy; CenterPoint Energy Gas Texas; Texas Gas Service (ONE Gas)
Utah
Electric: Rocky Mountain Power (PacifiCorp)
Gas: Dominion Energy Utah
Vermont
Electric: Green Mountain Power; Burlington Electric Department (municipal); Vermont Electric Coop (major coop)
Gas: Vermont Gas Systems
Virginia
Electric: Dominion Energy Virginia; Appalachian Power (AEP)
Gas: Washington Gas; Columbia Gas of Virginia; Virginia Natural Gas; Roanoke Gas
Washington
Electric: Puget Sound Energy; Pacific Power; Avista; Seattle City Light (municipal); Snohomish PUD
Gas: Puget Sound Energy Gas; Cascade Natural Gas; Avista Gas
West Virginia
Electric: Appalachian Power (AEP); FirstEnergy WV (Mon Power, Potomac Edison)
Gas: Mountaineer Gas
Wisconsin
Electric: We Energies; Wisconsin Public Service (WPS); Alliant Energy (WPL); Xcel Energy (NSPW); Madison Gas & Electric (MG&E)
Gas: We Energies Gas; WPS Gas; Alliant/WPL Gas; Xcel Gas; MG&E Gas
Wyoming
Electric: Rocky Mountain Power; Black Hills Energy; MDU (northeast)
Gas: Black Hills Energy; MDU; Wyoming Gas