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Electric Reliability Regions | RTO/ISOs | Jurisdictional Utilities | Subject Matter Responsibilities (Natural Gas) | Natural Gas Pipelines Electric Reliability Regions: FRCC MAAC NPCC Most of SERC Back to top RTO/ISOs: PJM New England ISO New York ISO Back to top Jurisdictional Utilities: Alabama Power Co. (Southern Co.) Atlantic City Electric Co. (CONNECTIV) Applachian Power Co. (AEP) Baltimore Gas & Electric Co. Bangor Hydro-Electric Co. Blackstone Valley Electric Co. (EUA) Boston Edison Co. Cambridge Electric Light Co. (CES) Carolina Power & Light Co. Central Hudson Gas & Electric Columbus Southern Power Co. (AEP) Corp. Central Maine Power Co. Central Vermont Public Service Co. Commonwealth Edison Co. (Exelon) Commonwealth Edison Co. of Indiana (Exelon) Commonwealth Electric Co. (CES) Citizens Communications Co. Concord Electric Co. Connecticut Light & Power Co. (NU) Connecticut Valley Electric Co, Inc. Consolidated Edison Co. Dayton Power & Light Co. Delmarva Power & Light Co. (CONNECTIV) Duke Energy Carolinas, LLC Duquesne Light Co. Eastern Edison Co. (EUA) Exeter & Hamton Electric Co. Fitchburg Gas & Electric Light Co. Florida Power & Light Co. Florida Power Corp. Georgia Power Co. (Southern Co.) Granite State Electric Co.(NEES) Green Mt. Power Corp. Gulf Power Co. (Southern Co.) Holyoke Power and Electric Co. (NU) Holyoke Water and Power Co. (NU) Indiana Michigan Power Co. (AEP) ISO New England, Inc. Jersey Central Power & Light Co. (GPU) Kanawha Valley Power Co. (AEP) Kentucky Power Co. (AEP) Kingsport Power Co.(AEP) Lockhart Power Co. Long Island Lighting Co. (Keyspan Corp.) Maine Public Service Co. Massachusetts Electric Co. (NEES) Metropolitan Edison Co. (GPU) Mississippi Power Co. (Southern Co.) Monongahela Power Co. (APS) Montaup Electric Co (EUA) Nantahala Power and Light Co. Narragansett Electric Co. (NEES) New England Electric Transmission Co. (NEES) New England Hydro Transmission Corp. (NEES) New England Hydro Transmission Electric Co. (NEES) New England Power Co. (NEES) New England Power Pool (NEPool) New York ISO, Inc. New York Power Pool New York State Electric & Gas Corp. Newport Electric Corp. (EUA) Niagara Mohawk Power Corp. Ohio Power Co. (AEP) Old Dominion Electric Coop. Orange and Rockland Utilities, Inc. Orlando Utilities Commission PECO Energy Co. Pennsylvania Electric Co. (GPU) Pennsylvania Power and Light Co. Pike County Light and Power Co. (O&R) PJM ISO Power Pool Potomac-Appalachian Transmission Highline, LLC Potomac Edison Co. (APS) Potomac Electric Power Co. Public Service Co. of New Hampshire (NU) Public Service Electric & Gas Co. Rochester Gas & Electric Corp. Rockland Electric Co. (O&R) Savannah Electric & Power Co. (Southern Co.) South Carolina Electric & Gas Co. Tampa Electric Co. UGI Utilities, Inc. United Illuminating Co. Until Energy Systems, Inc. Unitil Power Corp. Vermont Electric Power Co. Vermont Electric Transmission Co. Virginia Electric & Power Co. West Penn Power Co. (APS) Western Massachusetts Electric Co. (NU) Wheeling Power Co. (AEP) Yadkin, Inc. Back to top Subject Matter Responsibilities (Natural Gas): Section 311 Rates Back to top Natural Gas Pipelines: AES Ocean Express LLC Algonquin Gas Transmission, LLC ANR Pipeline Co. ANR Storage Co. Blue Lake Gas Storage Co. Caledonia Energy Partners, LLC Calypso U.S. Pipeline, LLC Carolina Gas Transmission Corporation Central Kentucky Transmission Company Central New York Oil & Gas, LLC Columbia Gas Transmission, LLC Columbia Gulf Transmission Co. Distrigas LLC Distrigas of Massachusetts LLC Dominion Cove Point LNG, LP Dominion South Pipeline Co., LP Dominion Transmission, Inc. East Tennessee Natural Gas, LLC Eastern Shore Natural Gas Co. Egan Hub Storage, LLC Empire Pipeline, Inc. Enbridge Pipeline (Ala Tenn) LLC Enbridge Pipelines (Midla) LLC Equitrans, LP Florida Gas Transmission Co., LLC Freebird Gas Storage, LLC Granite State Gas Transmission, Inc. Gulfstream Natural Gas System, LLC Hardy Storage Company, LLC Honeoye Storage Corp. Iroquois Gas Transmission System, LP Keyspan LNG, LP KO Transmission Co. Liberty Gas Storage Maritimes & Northeast Pipeline LLC Millennium Pipeline Company, LLC Moss Bluff National Fuel Gas Supply Corp. NGO Transmission, Inc. Nornew Energy Supply , Inc. Pine Needle LNG Company, LLC Portland Natural Gas Transmission System Saltville Gas Storage, Co., LLC SCG Pipeline, Inc. Southeast Supply Header, LLC Southern Natural Gas Co. Southern LNG, Inc. Stagecoach Storage Steuben Gas Storage Co. Tennessee Gas Pipeline Co. Texas Eastern Transmission, LP Texas Gas Transmission, LLC Total Peaking Services, LLC Transcontinental Gas Pipe Line, LLC Electric Reliability Regions | RTO/ISOs | Federal Power Marketing Agencies | Jurisdictional Utilities | Subject Matter Responsibilities (Natural Gas) | Natural Gas Pipelines | Oil Pipelines Electric Reliability Regions: ECAR ERCOT MAIN MAPP Parts of SERC Back to top RTO/ISOs: MISO SPP Back to top Federal Power Marketing Agencies: Bonneville Pwr. Admin Southeastern Pwr. Admin Western Area Pwr. Admin Southwest Pwr. Authority Tennessee Valley Authority Back to top Jurisdictional Utilities: AEP Texas Central Co. (AEP) AEP Texas North Co. (AEP) Allete, Inc. American Transmission Co. Ameren Aquila, Inc. v Cent Illinois Light Co. Cent Illinois Public Service. Co. (Ameren) Central Louisiana Electric Co., Inc. CenterPoint Energy Houston, LLC Cleveland Electric Illuminating Co. (First Energy) Consol. Water Power Co. Consumers Power Co. Dairyland Power Cooperative Detroit Edison Co. Duke Energy Indiana, Inc. Duke Energy Kentucky, Inc. Duke Energy Ohio, Inc. Edison Sault Electric Co. Electric Energy, Inc. Empire District Electric Co. Entergy Arkansas, Inc. Entergy Gulf States, Inc. Entergy Louisiana, Inc. Entergy Mississippi, Inc. Entergy New Orleans, Inc. GridAmerica Illinois Power Co. (Ameren) Indiana-Kentucky Electric Corp. Indianapolis Power & Light Co. International Transmission Co. Interstate Power Co. Interstate Power & Light Co. Kansas City Power & Light Co. Kansas Gas & Electric Co. (Western Res.) Kentucky Utilities Co. KCP&L Greater Missouri Operations Company Long Sault, Inc. Louisville Gas & Electric Co. Madison Gas & Electric Co. MDU Resources Group, Inc. Michigan Electric Transmission Co. MidAmerican Energy Co. Midwest ISO Midwest Energy, Inc. Mt Carmel Public Utility Co. Northern Indiana Public Service Co. (GridAmerica) Northern States Power Co. (MN) (Xcel) Northern States Power Co. (WI) (Xcel) Northwestern Public Service Co. Northwestern Wisconsin Electric Co. Ohio Edison Co. (First Energy) Ohio Valley Electric Corp. Oklahoma Gas & Electric Co. Otter Tail Power Co. Prairie Wind Transmission, LLC Pennsylvania Power Co. (First Energy) Public Service Co. of Oklahoma (AEP) South Beloit Water, Gas & Electric Co. Southern Indiana Gas & Electric Co. Southwestern Electric Power Co. (AEP) Southwestern Public Service Co. (New Century Energies) (Xcel) Southwest Power Pool (SPP) Soyland Power Electric Coop. St. Joseph Light & Power Co. Superior Water, Light & Power Co. Tallgrass Transmission, LLC Toledo Edison Co.(First Energy) TXU Electric Delivery Company Union Electric Co. (Ameren) Upper Peninsula Power Co. Utilicorp United, Inc. Wabash Valley Power Assoc. Westar Energy, Inc. Westar Generating, Inc. Western Resources Inc. Wisconsin Electric Power Co. Wisconsin Power & Light, Co. Wisconsin Public Service Corp. Wolverine Electric Power Coop. Xcel Energy, Inc. Back to top Subject Matter Responsibilities (Natural Gas): Ad Valorem Taxes Wellhead Determination Gulf Offshore Pipelines: Black Marlin Pipeline Co. Chandeleur Pipeline Co. Destin Pipeline Co., LLC Dauphin Island Gathering Partners Discovery Gas Transmission LLC Enbridge Pipelines (KPC) Enbridge Pipelines (UTOS) LLC Garden Banks Gas Pipeline, LLC High Island Offshore System, LLC Mississippi Gas Canyon Pipeline, LLC Nautilus Pipeline Co., LLC Panther Interstate Pipeline Energy, LLC Sea Robin Pipeline Co. Shell Offshore Stingray Pipeline Co., LLC Venice Gathering System, LLC Wellhead Determination Back to top Natural Gas Pipelines: Alliance Pipeline L.P. Bluewater Gas Storage, LLC Bobcat Gas Storage Cameron Interstate Pipeline, LLC CenterPoint Energy Gas Transmission Co. Center Point Energy - Mississippi River Transmission Corp Cheniere Sabine Pass Pipeline Co. Cheyenne Plains Pipeline Company, LLC Cimarron River Pipeline, LLC Cotton Valley Compression, LLC Crossroads Pipeline Co. Destin Pipeline Co., LLC Energy West Development, Inc. Frontier Gas Storage Co. Gas Technology Institute Great Lakes Gas Transmission, L.P. Guardian Pipeline, LLC Gulf South Pipeline Co., LP Gulf States Transmission Corporation Horizon Pipeline Co., LLC Kinder Morgan Interstate Transmission, LLC Kinder Morgan Illinois Pipeline LLC Midcontinent Express Pipeline LLC Midwest Gas Storage Co. Midwestern Gas Transmission Co. MIGC, Inc. Missouri Interstate Gas, LLC Missouri Pipeline Co. LLC Natural Gas Pipeline Company of America, LLC Norteno Pipeline Co. Northern Border Pipeline Co. Northern Natural Gas Co. Ohio Valley Hub, LLC OkTex Pipeline Co. Ozark Gas Transmission, LLC Panhandle Eastern Pipe Line Company, LP Petal Gas Storage, LLC PetroLogistics Natural Gas Storage, LLC Pine Prairie Energy Center, LLC Quest Pipelines (KPC) Sabine Pipe Line, LLC SG Resources Mississippi, LLC Southern Star Central Gas Pipeline, Inc. Southwest Gas Storage Co. Southwest Gas Transmission Co., LP Trailblazer Pipeline Co. Trans-Union Interstate Pipeline, LLC Trunkline Gas Company, LLC Trunkline LNG Co., LLC USG Pipeline Company Vector Pipeline, LP Viking Gas Transmission Co. West Texas Gas, Inc. Williston Basin Interstate Pipeline Co. Back to top Oil Pipelines: Airforce Pipeline, Inc. AGIP Petroleum Inc. (joint w/ Unocal Pl. Co.) Alpine Transportation Company Amoco Capline Pipeline Company Anadarko GOM Pipeline, Inc. Anschutz Ranch East Pipeline, Inc. Apache GOM Pipeline, Inc. ARCO Midcon, L.L.C. Atofina Pipeline Company, Inc. Bengal Pipeline Company LLC BP Pipelines (North America) Inc. BP Oil Pipeline Company BP Pipelines (Alaska) Inc. BP Transportation (Alaska) Inc. Baton Rouge Pipeline L.L.C. Bayou City Pipeline, Inc. (joint w/ Chevron P. L. Co.) Belle Fourche Pipeline Company Belle Rose NGL Pipeline, L.L.C. Black Lake Pipe Line Company Blue Dolphin Pipe Line Company Bridger Lake, LLC Bridger Pipeline LLC Buckeye NGL Pipe Lines LLC Buckeye Pipe Line Company, L.P. Burlington Resources Hydrocarbons Inc. Butte Pipeline Compa Calnev Pipe Line, L.L.C. CamWest Pipeline, L.L.C. CCPS Transportation LLC CENEX Pipeline, L.L.C. Centennial Pipeline L.L.C. Centurion Pipeline L.P. Chaparral Pipeline Company, L.P. Chase Transportation Company Chevron Pipe Line Company Chicap Pipe Line Company Chisholm Pipeline Company Chunchula Pipeline Company, L.L.C. Citgo Pipeline Company Citgo Products Pipeline Company CKB Petroleum, Inc. Coffeyville Resources Crude Transportation, LLC Collins Pipeline Company Colonial Pipeline Company Concha Chemical Pipeline L.L.C. Conoco Offshore Pipe Line Company ConocoPhillips Pipe Line Company ConocoPhillips Transportation Alaska, Inc. Conquest Transmission Company Cottonwood Creek, Inc. Crown-Rancho Pipe Line Corporation Cypress Pipeline Company Dixie Pipeline Company Dome Pipeline Corporation Dry Trails Midstream Energy, LLC Dynegy NGL Pipeline Company Eighty-Eight Oil LLC Ellwood Pipeline, Inc. El Paso Merchant Energy-Petroleum Company El Paso Oil Transmission Inc. Emerald Pipe Line Corporation Enbridge Energy, Limited Partnership Enbridge Pipelines (NE Texas Liquids) L.L.C. Enbridge Pipelines (North Dakota) L.L.C. Enbridge Pipelines (Ozark) LLC Enbridge Pipelines (Toledo) Inc. Encore Clear Fork Pipeline LLC Endicott Pipeline Company Energy Development Corporation (HIPS), Inc. Enterprise Lou-Tex NGL Pipeline, L.P. Enterprise Lou-Tex Propylene Pipeline L.P. EOTT Energy Pipeline Limited Partnership EPL Pipeline, L.L.C. Explorer Pipeline Company Express Pipeline L.L.C. ExxonMobil Pipeline Company Forest Oil Corporation Frontier Pipeline Company Genesis Pipeline USA, L.P. Heartland Pipeline Company Hess Pipeline Company Holly Energy Partners – Operating, L.P. IMTT-Pipeline Inland Products Pipeline Interprovincial Pipe Line Limited Interstate Storage & Pipe Line Corporation Jayhawk Pipeline, L.L.C. Kaneb Pipe Line Operating Partnership, L.P. Kenai Pipe Line Company Kerr-McGee Pipeline Corporation Keystone Pipeline Company Kiantone Pipeline Corporation Kinder Morgan Cochin LLC Kinder Morgan Operating L.P. "A" Kinder Morgan Wink Pipeline LLC Koch Alaska Pipeline Company, L.L.C. Koch Pipeline Company, L.P. Kuparuk Transportation Company Laclede Pipeline Company LDH Energy Hastings Pipeline LLC Linder Oil Company, A Partnership Locap, L.L.C. Longhorn Partners Pipeline, L.P. Magellan Pipeline Company, L. P. MAPCO Petroleum Pipeline Systems Inc. Marathon Ashland Pipe Line L.L.C. Marathon Pipe Line L.L.C. Mark Oil Pipeline Company MarkWest Michigan Pipeline Company, L.L.C. Mars Oil Pipeline Company Mid-America Pipeline Company, L.L.C. Mid-Valley Pipeline Company Milne Point Pipe Line, L.L.C.   Minnesota Pipe Line Company, LLC Mobil Eugene Island Pipeline Company Mobil Pipe Line Company MOEM Pipeline L.L.C. Muskegon Pipeline L.L.C. Mustang Pipe Line LLC Navajo Nation Oil & Gas Company, Inc. DBA/Running Horse Pipeline Company Navajo Pipeline Co. Norco Pipeline Company, L.L.C. Nova Chemicals, Inc. Nuevo Energy Company NuStar Pipeline Operating Partnership, L.P. NuStar Logistics, L.P. NW Pipeline, Inc. Ohio Oil Gathering Corporation II Ohio River Pipe Line, L.L.C. Olympic Pipe Line Company Osage Pipe Line Company, LLC Overland Pass Pipeline Company, LLC Pennzoil Offshore Pipeline Company Pennzoil Petroleum Pipeline Company Phillips Texas Pipeline Company, Ltd. Pioneer Natural Resources USA, Inc. Pioneer Pipe Line Company Plains Pipeline, L. P. Plantation Pipe Line Company Platte Pipe Line Company P.M.I. Services North America, Inc. Pogo Offshore Pipeline Company Pogo Producing Company Point Arguello Pipeline Company Point Arguello Terminal Company Portland Pipe Line Corporation The Premcor Pipeline Co. Razorback Pipeline Company Red Butte Pipe Line Company Regency Liquids Pipeline LLC Rio Grande Pipeline Company Rio Vista Operating Partnership, LLC Rocky Mountain Pipeline System L.L.C. Salmon Resources Ltd. Samedan Oil Corporation Sanders Pipeline Company San Pedro Bay Pipeline Company Seaway Crude Pipeline Company Seaway Pipeline Company Seaway Products Pipeline Company Seminole Creek, Ltd. Seminole Pipeline Company (joint w/ Mid-America Pl. Co.) SemPipe, L.P. SFPP, L.P. Shamrock Pipe Line Corporation Shell Pipeline Company LP Ship Shoal Pipeline Company Sinclair Pipeline Company, L.L.C. Skelly-Belvieu Pipeline Company, L.L.C. Sorrento Pipeline Company, L.L.C. Southcap Pipe Line Company Southtex 66 Pipeline Company, Ltd. St. Louis Pipeline Corporation Suburban Propane, L.P. Sun Pipe Line Services (Out) L.L.C. Suncor Energy (USA) Pipeline Company Sunoco Pipeline L.P. Targa NGL Pipeline Company LLC TEPPCO Crude Pipeline, LLC TE Products Pipeline Company, LLC Tesoro High Plains Pipeline Company Total Petrochemicals Pipeline USA, Inc. TransMontaigne Product Services Inc. Trans Mountain Oil Pipe Line Corporation Tri-States NGL Pipeline, L.L.C. Unocal California Pipeline Company Unocal Pipeline Company Valero MKS Logistics, L.L.C. Valero Terminaling and Distribution Company Wesco Pipeline LLC WesPac Pipelines - Memphis, LLC West Shore Pipe Line Company WesTTex 66 Pipeline Company West Texas Gulf Pipe Line Company West Texas LPG Pipeline Limited Partnership Whiskey Springs Oil Pipeline Company White Shoal Pipeline Corporation Whiting Oil and Gas Corporation Williams Mid-South Pipeline, L.L.C. Wilprise Pipeline Company, L.L.C. Wolverine Pipe Line Company Wood River Pipe Lines, LLC Yellowstone Pipeline Company Electric Reliability Regions | RTO/ISOs | Subject Matter Responsibilities (Electric) | Jurisdictional Utilities | Natural Gas Pipelines Electric Reliability Regions: WECC Back to top RTO/ISOs: RTO West CA ISO Back to top Subject Matter Responsibilities (Electric): Market-Based Rates (Electric Marketers) Mergers & Corporate Information Qualifying Facilities (QFs) Securities Issuances Back to top Jurisdictional Utilities: Arizona Public Service, Co. Avista Corp. Basin Electric Power Cooperative Black Hills/Colorado Electric Utility Company, LP Black Hills Power, Inc. California ISO Corp. California Power Exchange Corp. Cheyenne Light, Fuel & Power Co. Deseret Generation and Transmission Coop. El Paso Electric Co. Idaho Power Co. MATL LLP Nevada Power Co. NorthWestern Corporation Pacific Gas & Electric Co. Pacificorp Peoples Electric Coop. Portland General Electric Co. Powder River Energy Corporation Public Service. Co. of Colorado (New Century Energies) Public Service Co. of New Mexico Puget Sound Energy, Inc. Rayburn Country Electric Coop. San Diego Gas & Electric Co. (SEMPRA) Sierra Pacific Power Co. Southern California Edison Co. Texas-New Mexico Power Co. Tucson Electric Power Co. UNS Electric, Inc. WestConnect Back to top Natural Gas Pipelines: B-R Pipeline Company Canyon Creek Compression Co. Clear Creek Storage Company, LLC Colorado Interstate Gas Co. El Paso Natural Gas Co. Entrega Gas Pipeline, LLC Gas Transmission - Northwest Corp. Georgia Strait Crossing Pipeline, LP Kern River Gas Transmission Co. MarkWest New Mexico, LLC Mojave Pipeline Co. North Baja Pipeline, LLC Northwest Pipeline GP Questar Overthrust Pipeline Co. Paiute Pipeline Co. Questar Pipeline Co. Questar Southern Trails Pipeline Co. Rockies Express Pipeline, LLC Sumas International Pipeline, Inc. TransColorado Gas Transmission Co. Transwestern Pipeline Co., LLC Tuscarora Gas Transmission Co. WestGas Interstate, Inc. White River Hub, LLC Wyoming Interstate Company, Ltd. Young Gas Storage Company, Ltd.