Investor-owned utility
An investor-owned utility or IOU is a business organization, providing a product or service regarded as a utility (often termed a public utility regardless of ownership), and managed as private enterprise rather than a function of government or a utility cooperative. Such businesses can range from a family whose residential property includes a well whose flow in excess of the family's own needs produces a secondary income, to international communications conglomerates, but political and infrastructure considerations in some countries makes the private sector of the electric-power production and distribution industry the most often discussed investor-owned utilities there.
List of Investor Owned Electric Power Delivery Utilities with Assets in the United States of America
| Parent Company | Operating Company | Operating States |
|---|---|---|
| AES Corporation | Indianapolis Power & Light | IN |
| Dayton Power and Light | OH | |
| Allete | Minnesota Power | MN |
| Superior Water, Light and Power | WI | |
| Alliant Energy | Interstate Power and Light | IA, MN |
| Wisconsin Power and Light | WI | |
| Ameren | Ameren Illinois | IL |
| Ameren Missouri | MO | |
| American Electric Power | 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 | Avista Utilities | ID, WA |
| Black Hills Corporation | Black Hills Power | CO, SD, IA, KS, NE |
| Cheyenne Light, Fuel & Power | WY | |
| CenterPoint Energy | CenterPoint Energy | TX |
| Fortis Inc. | Central Hudson Gas & Electric | NY |
| CLECO | Cleco | LA |
| Consolidated Edison | Consolidated Edison | NY |
| Orange and Rockland Utilities | NY, NJ, PA | |
| CMS Energy | Consumers Energy | MI |
| Dominion Resources | Dominion Virginia Power | VA |
| Dominion North Carolina Power | NC | |
| DQE | Duquesne Light | PA |
| DTE Energy Electric Company | Detroit Edison | MI |
| Duke Energy | 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 | Southern California Edison | CA |
| El Paso Electric | El Paso Electric | TX, NM |
| Emera | Bangor Hydro Electric | ME |
| Maine Public Service | ME | |
| Energy Future Holdings | Oncor Electric Delivery | TX |
| Entergy | Entergy Arkansas | AR |
| Entergy Louisiana | LA | |
| Entergy Gulf States | LA | |
| Entergy Mississippi | MS | |
| Entergy New Orleans | LA | |
| Entergy Texas | TX | |
| Exelon | Commonwealth Edison | IL |
| Philadelphia Electric | PA | |
| Baltimore Gas & Electric | MD | |
| FirstEnergy | 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 | |
| Gaz Metro | Central Vermont Public Service | VT |
| Green Mountain Power | VT | |
| Great Plains Energy | Kansas City Power and Light | MO, KS |
| Hawaiian Electric Industries | Hawaii Electric Company | HI |
| Hawaii Electric Light Company | HI | |
| Maui Electric Company | HI | |
| Iberdrola | 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 | Montana-Dakota Utilities | MT, ND, SD, WY |
| MGE Energy | Madison Gas and Electric | WI |
| Berkshire Hathaway Energy | MidAmerican Energy Company | IL, SD, NE |
| Pacificorp--Pacific Power | OR, CA, WA | |
| Pacificorp--Rocky Mountain Power | UT, WY, ID | |
| NV Energy | NV, CA | |
| National Grid plc | New England Power | MA, NH, RI, VT, CT, ME |
| Massachusetts Electric | MA | |
| Nantucket Electric | MA | |
| Narragansett Electric | MA | |
| Granite State Electric | NH | |
| Niagara Mohawk Power | NY | |
| Long Island Lighting | NY | |
| NextEra Energy | Florida Power & Light | FL |
| NiSource | Northern Indiana Public Service Company | IN |
| Northeast Utilities | Connecticut Light & Power | CT |
| Public Service New Hampshire | NH | |
| Western Massachusetts Electric | MA | |
| NorthWestern Corporation | NorthWestern Energy | SD, MT, NE |
| NRG Energy | Reliant Energy | TX |
| NSTAR | Boston Edison | MA |
| Cambridge Electric Light | MA | |
| Commonwealth Electric | MA | |
| OGE Energy Corporation | Oklahoma Gas & Electric | OK, AR |
| Otter Tail Corporation | Otter Tail Power | ND, MN, SD |
| PG&E Corporation | Pacific Gas & Electric Company | CA |
| Pepco Holdings | Potomac Electric Power | DC, MD |
| Delmarva Power | DE | |
| Atlantic City Electric | NJ | |
| Pinnacle West Capital | Arizona Public Service | AZ |
| PNM Resources | Public Service Company of New Mexico | NM |
| Texas-New Mexico Power | TX | |
| Portland General Electric | Portland General Electric | OR |
| PPL | PPL Electric Utilities | PA |
| Louisville Gas & Electric | KY | |
| Kentucky Utilities | KY | |
| Public Service Enterprise Group | Public Service Electric & Gas | NJ |
| Puget Energy | Puget Sound Energy | WA |
| SCANA | South Carolina Electric & Gas Company | SC |
| Sempra Energy | San Diego Gas & Electric | CA |
| Southern Company | Alabama Power | AL |
| Georgia Power | GA | |
| Gulf Power | FL | |
| Mississippi Power | MS | |
| TECO Energy | Tampa Electric | FL |
| UGI Corporation | United Electric Company | PA |
| UIL Holdings Corporation | The United Illuminating Company | CT |
| UniSource Energy | Tucson Electric Power | AZ |
| UNS Electric | AZ | |
| Unitil | Unitil Energy | MA, NH |
| Fitchburg Gas & Electric | MA | |
| Vectren | Southern Indiana Gas and Electric | IN |
| Westar Energy | Westar Energy | KS |
| Wisconsin Energy Corporation | We Energies | WI |
| Xcel Energy | Northern States Power Company | MN, ND, SD, WI |
| Public Service Colorado | CO | |
| Southwestern Public Service | NM, TX |
References
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