Investor-owned utilities in the United States

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Investor-owned utilities (IOUs) are private enterprises [1] acting as public utilities.

Investor-owned electric power delivery utilities with assets in the United States of America [2] [3] [4]
Parent companyOperating companyOperating states
AES Corporation (AES) AES Indiana, formerly Indianapolis Power & Light IN
Dayton Power and Light OH
Allete (ALE)Minnesota Power MN
Superior Water, Light and Power WI
Alliant Energy (LNT)Interstate Power and Light IA
Wisconsin Power and Light WI
Ameren (AEE) Ameren Illinois IL
Ameren Missouri MO
American Electric Power (AEP)AEP Ohio OH, WV
AEP TexasTX
Appalachian PowerTN, VA, WV
Indiana Michigan PowerIN, MI
Kentucky PowerKY
Public Service Company of OklahomaOK
Southwestern Electric PowerTX
American Transmission CompanyAmerican Transmission CompanyWI, MI
Avista Corporation (AVA)Avista UtilitiesID, WA
Black Hills Corporation (BKH)Black Hills EnergyCO, SD, IA, KS, NE, WY
CenterPoint Energy (CNP)CenterPoint EnergyTX
Fortis Inc. (FTS)Central Hudson Gas & ElectricNY
Cleco Holdings ClecoLA
Consolidated Edison (ED)Consolidated EdisonNY
Orange and Rockland UtilitiesNY, NJ, PA
CMS Energy (CMS) Consumers Energy MI
Dominion Energy Dominion Virginia PowerVA
Dominion North Carolina PowerNC
DQE Duquesne LightPA
DTE Energy Electric Company (DTE)Detroit EdisonMI
Duke Energy (DUK)Duke Energy CarolinasNC, SC
Duke Energy ProgressNC, SC
Duke Energy IndianaIN
Duke Energy OhioOH
Duke Energy KentuckyKY
Duke Energy FloridaFL
Edison International (EIX) Southern California Edison CA
Emera Bangor Hydro ElectricME
Maine Public ServiceME
Énergir Central Vermont Public ServiceVT
Green Mountain PowerVT
Entergy (ETR)Entergy ArkansasAR
Entergy LouisianaLA
Entergy Gulf StatesLA
Entergy MississippiMS
Entergy New OrleansLA
Entergy TexasTX
Evergy (EVRG) Evergy MO, KS
Eversource Energy (ES)Connecticut Light & PowerCT
Public Service New HampshireNH
Western Massachusetts ElectricMA
Exelon (EXC) Commonwealth Edison IL
Philadelphia Electric PA
Baltimore Gas & Electric MD
Potomac Electric Power DC, MD
Delmarva Power DE, MD
Atlantic City ElectricNJ
FirstEnergy (FE)Ohio EdisonOH
Cleveland Electric IlluminatingOH
Toledo EdisonOH
Pennsylvania PowerPA
PenelecPA
Met-EdPA
Jersey Central P&LNJ
Allegheny Energy PA
Monongahela PowerWV
Potomac EdisonMD, WV, VA
West PennPA
Hawaiian Electric Industries (HE)Hawaii Electric CompanyHI
Hawaii Electric Light CompanyHI
Maui Electric CompanyHI
Iberdrola (IBE.MC)Rochester Gas & ElectricNY
New York State Electric & GasNY
Central Maine PowerME
Integrys Energy Group Wisconsin Public Service Corporation WI
Upper Peninsula Power Company MI
ITC Holdings ITC Transmission MI
Michigan Electric Transmission CompanyMI
ITC MidwestIA, MN, IL, MO
ITC Great PlainsOK, KS
MDU Resources (MDU)Montana-Dakota UtilitiesMT, ND, SD, WY
MGE Energy (MGEE) Madison Gas and Electric WI
Berkshire Hathaway Energy MidAmerican Energy Company IA, IL, SD, NE
Pacificorp--Pacific PowerOR, CA, WA
Pacificorp--Rocky Mountain PowerUT, WY, ID
NV Energy NV, CA
National Grid plc (NGG)New England PowerMA, NH, VT, CT, ME
Massachusetts ElectricMA
Nantucket ElectricMA
Granite State ElectricNH
Niagara Mohawk PowerNY
Long Island Lighting NY
NextEra Energy (NEE) Florida Power & Light FL
Gulf Power FL
NiSource (NI)Northern Indiana Public Service CompanyIN
NorthWestern Corporation (NWE)NorthWestern EnergySD, MT, NE
NRG Energy (NRG)Reliant EnergyTX
NSTAR (NSARO)Boston EdisonMA
Cambridge Electric LightMA
Commonwealth ElectricMA
OGE Energy Corporation (OGE) Oklahoma Gas & Electric OK, AR
Otter Tail Corporation (OTTR)Otter Tail PowerND, MN, SD
PG&E Corporation (PCG) Pacific Gas & Electric Company CA
Pinnacle West Capital (PNW) Arizona Public Service AZ
PNM Resources (PNM)Public Service Company of New MexicoNM
Texas-New Mexico PowerTX
Portland General Electric (POR)Portland General ElectricOR
PPL Corporation (PPL)PPL Electric UtilitiesPA
Louisville Gas & Electric KY
Kentucky Utilities KY
Rhode Island Energy RI
Public Service Enterprise Group (PEG)Public Service Electric & GasNJ
Puget Energy Puget Sound Energy WA
SCANA (SCG)South Carolina Electric & Gas CompanySC
Sempra Energy (SRE) San Diego Gas & Electric CA
Southern Company (SO)Alabama PowerAL
Georgia PowerGA
Mississippi PowerMS
TECO Energy Tampa ElectricFL
UGI Corporation (UGI)United Electric CompanyPA
UIL Holdings Corporation The United Illuminating Company CT
UniSource Energy Tucson Electric Power AZ
UNS ElectricAZ
Unitil (UTL)Unitil EnergyMA, NH
Fitchburg Gas & ElectricMA
Vectren (VVC)Southern Indiana Gas and ElectricIN
Wisconsin Energy Corporation We EnergiesWI
Xcel Energy (XEL) Northern States Power Company MN, ND, SD, WI
Public Service ColoradoCO
Southwestern Public ServiceNM, TX

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References

  1. "Differences Between Publicly and Investor-Owned Utilities". California Energy Commission. California Energy Commission. Retrieved 29 January 2019.
  2. Energy Dictionary
  3. "Electric Utilities". www.utilityconnection.com.
  4. Pentland, William. "Investor-Owned Utilities: Asleep at the Switch or Above the Law?". Forbes.