| Parent company |
Operating company |
Operating 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 Texas |
TX
|
| Appalachian Power |
TN, VA, WV
|
| Indiana Michigan Power |
IN, MI
|
| Kentucky Power |
KY
|
| Public Service Company of Oklahoma |
OK
|
| Southwestern Electric Power |
TX
|
| American Transmission Company |
American Transmission Company |
WI, MI
|
| Avista Corporation (AVA) |
Avista Utilities |
ID, WA
|
| Black Hills Corporation (BKH) |
Black Hills Energy |
CO, SD, IA, KS, NE, WY
|
| CenterPoint Energy (CNP) |
CenterPoint Energy |
TX
|
| Fortis Inc. (FTS) |
Central Hudson Gas & Electric |
NY
|
| Cleco Holdings |
Cleco |
LA
|
| Consolidated Edison (ED) |
Consolidated Edison |
NY
|
| Orange and Rockland Utilities |
NY, NJ, PA
|
| CMS Energy (CMS) |
Consumers Energy |
MI
|
| Dominion Energy |
Dominion Virginia Power |
VA
|
| Dominion North Carolina Power |
NC
|
| DQE |
Duquesne Light |
PA
|
| DTE Energy Electric Company (DTE) |
Detroit Edison |
MI
|
| Duke Energy (DUK) |
Duke Energy Carolinas |
NC, SC
|
| Duke Energy Progress |
NC, SC
|
| Duke Energy Indiana |
IN
|
| Duke Energy Ohio |
OH
|
| Duke Energy Kentucky |
KY
|
| Duke Energy Florida |
FL
|
| Edison International (EIX) |
Southern California Edison |
CA
|
| Emera |
Bangor Hydro Electric |
ME
|
| Maine Public Service |
ME
|
| Énergir |
Central Vermont Public Service |
VT
|
| Green Mountain Power |
VT
|
| Entergy (ETR) |
Entergy Arkansas |
AR
|
| Entergy Louisiana |
LA
|
| Entergy Gulf States |
LA
|
| Entergy Mississippi |
MS
|
| Entergy New Orleans |
LA
|
| Entergy Texas |
TX
|
| Evergy (EVRG) |
Evergy |
MO, KS
|
| Eversource Energy (ES) |
Connecticut Light & Power |
CT
|
| Public Service New Hampshire |
NH
|
| Western Massachusetts Electric |
MA
|
| Exelon (EXC) |
Commonwealth Edison |
IL
|
| Philadelphia Electric |
PA
|
| Baltimore Gas & Electric |
MD
|
| Potomac Electric Power |
DC, MD
|
| Delmarva Power |
DE, MD
|
| Atlantic City Electric |
NJ
|
| FirstEnergy (FE) |
Ohio Edison |
OH
|
| Cleveland Electric Illuminating |
OH
|
| Toledo Edison |
OH
|
| Pennsylvania Power |
PA
|
| Penelec |
PA
|
| Met-Ed |
PA
|
| Jersey Central P&L |
NJ
|
| Allegheny Energy |
PA
|
| Monongahela Power |
WV
|
| Potomac Edison |
MD, WV, VA
|
| West Penn |
PA
|
| Hawaiian Electric Industries (HE) |
Hawaii Electric Company |
HI
|
| Hawaii Electric Light Company |
HI
|
| Maui Electric Company |
HI
|
| Iberdrola (IBE.MC) |
Rochester Gas & Electric |
NY
|
| New York State Electric & Gas |
NY
|
| Central Maine Power |
ME
|
| Integrys Energy Group |
Wisconsin Public Service Corporation |
WI
|
| Upper Peninsula Power Company |
MI
|
| ITC Holdings |
ITC Transmission |
MI
|
| Michigan Electric Transmission Company |
MI
|
| ITC Midwest |
IA, MN, IL, MO
|
| ITC Great Plains |
OK, KS
|
| MDU Resources (MDU) |
Montana-Dakota Utilities |
MT, ND, SD, WY
|
| MGE Energy (MGEE) |
Madison Gas and Electric |
WI
|
| Berkshire Hathaway Energy |
MidAmerican Energy Company |
IA, IL, SD, NE
|
| Pacificorp--Pacific Power |
OR, CA, WA
|
| Pacificorp--Rocky Mountain Power |
UT, WY, ID
|
| NV Energy |
NV, CA
|
| National Grid plc (NGG) |
New England Power |
MA, NH, VT, CT, ME
|
| Massachusetts Electric |
MA
|
| Nantucket Electric |
MA
|
| Granite State Electric |
NH
|
| Niagara Mohawk Power |
NY
|
| Long Island Lighting |
NY
|
| NextEra Energy (NEE) |
Florida Power & Light |
FL
|
| Gulf Power |
FL
|
| NiSource (NI) |
Northern Indiana Public Service Company |
IN
|
| NorthWestern Corporation (NWE) |
NorthWestern Energy |
SD, MT, NE
|
| NRG Energy (NRG) |
Reliant Energy |
TX
|
| NSTAR (NSARO) |
Boston Edison |
MA
|
| Cambridge Electric Light |
MA
|
| Commonwealth Electric |
MA
|
| OGE Energy Corporation (OGE) |
Oklahoma Gas & Electric |
OK, AR
|
| Otter Tail Corporation (OTTR) |
Otter Tail Power |
ND, 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 Mexico |
NM
|
| Texas-New Mexico Power |
TX
|
| Portland General Electric (POR) |
Portland General Electric |
OR
|
| PPL Corporation (PPL) |
PPL Electric Utilities |
PA
|
| Louisville Gas & Electric |
KY
|
| Kentucky Utilities |
KY
|
| Rhode Island Energy |
RI
|
| Public Service Enterprise Group (PEG) |
Public Service Electric & Gas |
NJ
|
| Puget Energy |
Puget Sound Energy |
WA
|
| SCANA (SCG) |
South Carolina Electric & Gas Company |
SC
|
| Sempra Energy (SRE) |
San Diego Gas & Electric |
CA
|
| Southern Company (SO) |
Alabama Power |
AL
|
| Georgia Power |
GA
|
| Mississippi Power |
MS
|
| TECO Energy |
Tampa Electric |
FL
|
| UGI Corporation (UGI) |
United Electric Company |
PA
|
| UIL Holdings Corporation |
The United Illuminating Company |
CT
|
| UniSource Energy |
Tucson Electric Power |
AZ
|
| UNS Electric |
AZ
|
| Unitil (UTL) |
Unitil Energy |
MA, NH
|
| Fitchburg Gas & Electric |
MA
|
| Vectren (VVC) |
Southern Indiana Gas and Electric |
IN
|
| Wisconsin Energy Corporation |
We Energies |
WI
|
| Xcel Energy (XEL) |
Northern States Power Company |
MN, ND, SD, WI
|
| Public Service Colorado |
CO
|
| Southwestern Public Service |
NM, TX
|
