List of United States natural gas companies
Encyclopedia
This is a list of natural gas
Natural gas
Natural gas is a naturally occurring gas mixture consisting primarily of methane, typically with 0–20% higher hydrocarbons . It is found associated with other hydrocarbon fuel, in coal beds, as methane clathrates, and is an important fuel source and a major feedstock for fertilizers.Most natural...

 companies in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

.

  • Alabama
    Alabama
    Alabama is a state located in the southeastern region of the United States. It is bordered by Tennessee to the north, Georgia to the east, Florida and the Gulf of Mexico to the south, and Mississippi to the west. Alabama ranks 30th in total land area and ranks second in the size of its inland...

     – Alagasco
    Alagasco
    Alabama Gas Corporation, Alagasco, headquartered in Birmingham, Alabama, is the largest natural gas utility in north and central Alabama that provides energy to 460,000 homes and businesses. Its history dates back more than 150 years. It has operating divisions in Anniston, Birmingham, Gadsden,...

  • Alaska
    Alaska
    Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...

     – Enstar Natural Gas
  • Arizona
    Arizona
    Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

     – Transwestern Pipeline
    Transwestern Pipeline
    Transwestern Pipeline Company, LLC owns and operates a natural gas transmission system that provides access to natural gas supplies in the San Juan and Rocky Mountain Basins in northwest New Mexico, southwest Colorado, the Texas-Oklahoma Panhandle, and the Permian Basin region of West Texas and...

    , Southwest Gas Corporation
    Southwest Gas Corporation
    Southwest Gas Corporation is an investor-owned utility based in Las Vegas, Nevada.The company provides natural gas service to more than 1.8 million residential, commercial, and industrial customers in parts of Arizona, Nevada, and California.-History:...

  • Arkansas
    Arkansas
    Arkansas is a state located in the southern region of the United States. Its name is an Algonquian name of the Quapaw Indians. Arkansas shares borders with six states , and its eastern border is largely defined by the Mississippi River...

     - CenterPoint Energy Gas Transmission, Kinder Morgan, Inc., Spectra Energy, Inc., Mississippi River Transmission
  • California
    California
    California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

     – City of Long Beach Gas & Oil Department, Pacific Gas & Electric
    Pacific Gas and Electric Company
    The Pacific Gas and Electric Company , commonly known as PG&E, is the utility that provides natural gas and electricity to most of the northern two-thirds of California, from Bakersfield almost to the Oregon border...

    , San Diego Gas & Electric
    San Diego Gas & Electric
    San Diego Gas & Electric is the utility that provides natural gas and electricity to San Diego County and southern Orange County in southwestern California, United States...

    , Southern California Gas
  • Colorado
    Colorado
    Colorado is a U.S. state that encompasses much of the Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains...

     – Patara Oil & Gas, Xcel Energy
    Xcel Energy
    Xcel Energy, Inc. is a public utility company based in Minneapolis, Minnesota, serving customers in Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas, and Wisconsin. Primary services are electricity and natural gas...

    , Questar, El Paso Natural Gas
    El Paso Natural Gas
    El Paso Natural Gas is a system of natural gas pipelines that brings gas from the Permian Basin in Texas and the San Juan Basin in New Mexico and Colorado to West Texas, New Mexico, Nevada, California and Arizona. It also exports some natural gas to Mexico. It is owned by El Paso Corporation...

    , Transwestern Pipeline
    Transwestern Pipeline
    Transwestern Pipeline Company, LLC owns and operates a natural gas transmission system that provides access to natural gas supplies in the San Juan and Rocky Mountain Basins in northwest New Mexico, southwest Colorado, the Texas-Oklahoma Panhandle, and the Permian Basin region of West Texas and...

  • Connecticut
    Connecticut
    Connecticut is a state in the New England region of the northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, and the state of New York to the west and the south .Connecticut is named for the Connecticut River, the major U.S. river that approximately...

     – Northeast Utilities
    Northeast Utilities
    Northeast Utilities is a publicly-traded, Fortune 500 energy company headquartered in Berlin, Connecticut, with several regulated subsidiaries offering retail electricity and natural gas service to more than 2.1 million customers in New England....

     (via Yankee Gas), UIL Holdings Corp (via Connecticut Natural Gas
    Connecticut Natural Gas
    Connecticut Natural Gas is a natural gas distribution company that delivers natural gas and energy services to more than 165,000 residential, commercial and industrial customers in the Greater Hartford area and Greenwich, Connecticut areas. CNG is a subsidiary of UIL Holdings Corporation,...

     and Southern Connecticut Gas
    Southern Connecticut Gas
    -Overview & History:The Southern Connecticut Gas Company is a natural gas distribution company that delivers natural gas and energy services to more than 185,000 residential, commercial and industrial customers along or near the Long Island Sound shoreline. SCG is a subsidiary of UIL Holdings...

    ), City of Norwich Department of Public Utilities
  • Delaware
    Delaware
    Delaware is a U.S. state located on the Atlantic Coast in the Mid-Atlantic region of the United States. It is bordered to the south and west by Maryland, and to the north by Pennsylvania...

     – Northeast Utilities
    Northeast Utilities
    Northeast Utilities is a publicly-traded, Fortune 500 energy company headquartered in Berlin, Connecticut, with several regulated subsidiaries offering retail electricity and natural gas service to more than 2.1 million customers in New England....

  • District of Columbia – Washington Gas
    Washington Gas
    WGL Holdings, Inc. , is a public utility holding company located in the United States that serves customers in the District of Columbia, Maryland, and Virginia...

  • Florida
    Florida
    Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

     – Florida Gas Transmission Company
  • Georgia
    Georgia (U.S. state)
    Georgia is a state located in the southeastern United States. It was established in 1732, the last of the original Thirteen Colonies. The state is named after King George II of Great Britain. Georgia was the fourth state to ratify the United States Constitution, on January 2, 1788...

     – AGL Resources
    AGL Resources
    AGL Resources, Inc. is a Fortune 1000, Forbes 2000 energy services holding company. Their principal business is distribution of natural gas in Florida, Georgia, Maryland, New Jersey, Tennessee and Virginia, providing gas for more than 2.2 million customers....

  • Kansas
    Kansas
    Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...

     – Aquila, Inc.
    Aquila, Inc.
    Aquila, Inc. was an electricity and natural gas distribution network headquartered in Kansas City, Missouri in the United States. The company also owned and operated power generation assets...

    , Atmos Energy
    Atmos Energy
    Atmos Energy Corporation , headquartered in Dallas, Texas, is the largest distributor of natural gas in the United States, serving 3.2 million customers nationwide. Atmos acquired TXU's natural gas and pipeline holdings in 2004. The company began as Energas in 1983, a spinoff of the natural gas...

    , Kansas Gas Service
    Kansas Gas Service
    Kansas Gas Service is the largest natural gas distribution company in Kansas, operating in 82 counties. It is a regulated public utility which serves 642,000 customers in 341 communities, employing more than 1,100 employees. In addition to owning seven interstate pipeline connections and three...

    , Xcel Energy
    Xcel Energy
    Xcel Energy, Inc. is a public utility company based in Minneapolis, Minnesota, serving customers in Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas, and Wisconsin. Primary services are electricity and natural gas...

    , Panhandle Eastern Pipe Line
  • Kentucky
    Kentucky
    The Commonwealth of Kentucky is a state located in the East Central United States of America. As classified by the United States Census Bureau, Kentucky is a Southern state, more specifically in the East South Central region. Kentucky is one of four U.S. states constituted as a commonwealth...

     – EQT Corporation
  • Louisiana
    Louisiana
    Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties...

     – Trunkline Gas Company, Gulf South Pipe Line, Florida Gas Transmission Company
  • Idaho
    Idaho
    Idaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....

     – Intermountain Gas Company
  • Illinois
    Illinois
    Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

     – Peoples Energy
    Peoples Energy
    Peoples Energy was the former name of a holding company whose main revenues came from its regulated gas utility subsidiaries Peoples Gas and the North Shore Gas Company...

    , Nicor Gas, Panhandle Eastern Pipe Line, Hudson Energy, Illinois Gas Transmission
  • Indiana
    Indiana
    Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the Midwestern United States and Great Lakes Region. With 6,483,802 residents, the state is ranked 15th in population and 16th in population density. Indiana is ranked 38th in land area and is...

     – Panhandle Eastern Pipe Line
  • Iowa
    Iowa
    Iowa is a state located in the Midwestern United States, an area often referred to as the "American Heartland". It derives its name from the Ioway people, one of the many American Indian tribes that occupied the state at the time of European exploration. Iowa was a part of the French colony of New...

     - MidAmerican Energy Company
    MidAmerican Energy Company
    MidAmerican Energy Company is an energy company based in Des Moines, Iowa. Its service area includes almost two-thirds of Iowa, as well as portions of Illinois, South Dakota, and Nebraska. Its territory is wholly encompassed by the territory of the Midwest Independent Transmission System Operator...

  • Maine
    Maine
    Maine is a state in the New England region of the northeastern United States, bordered by the Atlantic Ocean to the east and south, New Hampshire to the west, and the Canadian provinces of Quebec to the northwest and New Brunswick to the northeast. Maine is both the northernmost and easternmost...

     – Bay State Gas
    Bay State Gas
    Bay State Gas is a supplier of retail natural gas to over 300,000 customers in parts of Massachusetts, New Hampshire, and Maine.BSG is now Columbia Gas of Massachusetts as of 2010. A subsidiary of NiSource....

    , Northeast Utilities
    Northeast Utilities
    Northeast Utilities is a publicly-traded, Fortune 500 energy company headquartered in Berlin, Connecticut, with several regulated subsidiaries offering retail electricity and natural gas service to more than 2.1 million customers in New England....

  • Maryland
    Maryland
    Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...

     – Baltimore Gas & Electric, Northeast Utilities
    Northeast Utilities
    Northeast Utilities is a publicly-traded, Fortune 500 energy company headquartered in Berlin, Connecticut, with several regulated subsidiaries offering retail electricity and natural gas service to more than 2.1 million customers in New England....

    , Washington Gas
    Washington Gas
    WGL Holdings, Inc. , is a public utility holding company located in the United States that serves customers in the District of Columbia, Maryland, and Virginia...

  • Massachusetts
    Massachusetts
    The Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...

     – Columbia Gas of Massachusetts, NSTAR
    NSTAR
    NSTAR is a utility company that provides retail electricity and natural gas to 1.4 million customers in eastern and central Massachusetts, including the Boston urban area....

    , Northeast Utilities
    Northeast Utilities
    Northeast Utilities is a publicly-traded, Fortune 500 energy company headquartered in Berlin, Connecticut, with several regulated subsidiaries offering retail electricity and natural gas service to more than 2.1 million customers in New England....

     (including Western Massachusetts Electric Company/WMECO)
  • Michigan
    Michigan
    Michigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....

     – DTE Energy
    DTE Energy
    DTE Energy Co. is a Detroit, Michigan-based utility incorporated in 1995 involved in the development and management of energy-related businesses and services nationwide....

     (Michcon), Consumers Energy
    Consumers Energy
    Consumers Energy is a public utility that provides natural gas and electricity to more than 6 million of Michigan's 10 million residents. It serves customers in all 68 of the state’s Lower Peninsula counties. It is a division of CMS Energy. Its headquarters is in Jackson.-History:The company was...

    , We Energies
  • Mississippi
    Mississippi
    Mississippi is a U.S. state located in the Southern United States. Jackson is the state capital and largest city. The name of the state derives from the Mississippi River, which flows along its western boundary, whose name comes from the Ojibwe word misi-ziibi...

     - Atmos Energy
    Atmos Energy
    Atmos Energy Corporation , headquartered in Dallas, Texas, is the largest distributor of natural gas in the United States, serving 3.2 million customers nationwide. Atmos acquired TXU's natural gas and pipeline holdings in 2004. The company began as Energas in 1983, a spinoff of the natural gas...

  • Missouri
    Missouri
    Missouri is a US state located in the Midwestern United States, bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, Kansas and Nebraska. With a 2010 population of 5,988,927, Missouri is the 18th most populous state in the nation and the fifth most populous in the Midwest. It...

     – Missouri Gas Energy
    Missouri Gas Energy
    Missouri Gas Energy is a public utility company that provide natural gas for residential and commercial customers. The company headquarter is located in Kansas City, MO with offices in St. Joseph, Lee's Summit, Warrensburg, Joplin, Republic, Neosho and Monett....

    , City Utilities of Springfield
    City Utilities of Springfield
    City Utilities of Springfield is a community-owned utility serving southwest Missouri with electricity, natural gas, water, telecommunications and transit services...

    , Laclede Gas
  • Minnesota
    Minnesota
    Minnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state...

     – Xcel Energy
    Xcel Energy
    Xcel Energy, Inc. is a public utility company based in Minneapolis, Minnesota, serving customers in Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas, and Wisconsin. Primary services are electricity and natural gas...

    , CenterPoint Energy
    CenterPoint Energy
    CenterPoint Energy is a Fortune 500 electric and natural gas utility serving several markets in the U.S. states of Arkansas, Louisiana, Minnesota, Mississippi, Oklahoma, and Texas. It was formerly known as Reliant Energy , NorAm Energy, Houston Industries, and HL&P...

  • Nevada
    Nevada
    Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...

     – Southwest Gas Corporation
    Southwest Gas Corporation
    Southwest Gas Corporation is an investor-owned utility based in Las Vegas, Nevada.The company provides natural gas service to more than 1.8 million residential, commercial, and industrial customers in parts of Arizona, Nevada, and California.-History:...

  • New Jersey
    New Jersey
    New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...

     – New Jersey Resources
    New Jersey Resources
    New Jersey Resources is a Fortune 1000 company and a member of the Forbes Platinum 400 that provides retail and wholesale energy services to customers in New Jersey and in states from the Gulf Coast to New England, and Canada...

  • New Jersey
    New Jersey
    New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...

     – South Jersey Industries
    South Jersey Industries
    South Jersey Industries is a publicly-held energy services holding company for a natural gas utility and other, non-regulated companies...

  • New Jersey
    New Jersey
    New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...

     – Northeast Utilities
    Northeast Utilities
    Northeast Utilities is a publicly-traded, Fortune 500 energy company headquartered in Berlin, Connecticut, with several regulated subsidiaries offering retail electricity and natural gas service to more than 2.1 million customers in New England....

  • New Hampshire
    New Hampshire
    New Hampshire is a state in the New England region of the northeastern United States of America. The state was named after the southern English county of Hampshire. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Atlantic Ocean to the east, and the Canadian...

     – Bay State Gas
    Bay State Gas
    Bay State Gas is a supplier of retail natural gas to over 300,000 customers in parts of Massachusetts, New Hampshire, and Maine.BSG is now Columbia Gas of Massachusetts as of 2010. A subsidiary of NiSource....

    , Northeast Utilities
    Northeast Utilities
    Northeast Utilities is a publicly-traded, Fortune 500 energy company headquartered in Berlin, Connecticut, with several regulated subsidiaries offering retail electricity and natural gas service to more than 2.1 million customers in New England....

  • New Mexico
    New Mexico
    New Mexico is a state located in the southwest and western regions of the United States. New Mexico is also usually considered one of the Mountain States. With a population density of 16 per square mile, New Mexico is the sixth-most sparsely inhabited U.S...

     – Xcel Energy
    Xcel Energy
    Xcel Energy, Inc. is a public utility company based in Minneapolis, Minnesota, serving customers in Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas, and Wisconsin. Primary services are electricity and natural gas...

    , Transwestern Pipeline
    Transwestern Pipeline
    Transwestern Pipeline Company, LLC owns and operates a natural gas transmission system that provides access to natural gas supplies in the San Juan and Rocky Mountain Basins in northwest New Mexico, southwest Colorado, the Texas-Oklahoma Panhandle, and the Permian Basin region of West Texas and...

  • New York
    New York
    New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

     – Northeast Utilities
    Northeast Utilities
    Northeast Utilities is a publicly-traded, Fortune 500 energy company headquartered in Berlin, Connecticut, with several regulated subsidiaries offering retail electricity and natural gas service to more than 2.1 million customers in New England....

    , Central Hudson Gas & Electric, National Fuel Gas
    National Fuel Gas
    National Fuel Gas , Co. is an energy company. It consists of five business segments:Utility, Pipeline and Storage, Exploration and Production, Energy Marketing, and Timber. National Fuel Gas wasincorporated in 1902 and is based in Williamsville, New York....

    , National Grid USA
    National Grid plc
    National Grid plc is a multinational electricity and gas utility company headquartered in London, United Kingdom. Its principal activities are in the United Kingdom and northeastern United States and it is one of the largest investor-owned energy companies in the world.National Grid is listed on...

  • North Carolina
    North Carolina
    North Carolina is a state located in the southeastern United States. The state borders South Carolina and Georgia to the south, Tennessee to the west and Virginia to the north. North Carolina contains 100 counties. Its capital is Raleigh, and its largest city is Charlotte...

     – Duke Energy
    Duke Energy
    Duke Energy , headquartered in Charlotte, North Carolina, is an energy company with assets in the United States, Canada and Latin America.-Overview:...

    , Piedmont Natural Gas
  • North Dakota
    North Dakota
    North Dakota is a state located in the Midwestern region of the United States of America, along the Canadian border. The state is bordered by Canada to the north, Minnesota to the east, South Dakota to the south and Montana to the west. North Dakota is the 19th-largest state by area in the U.S....

     – Xcel Energy
    Xcel Energy
    Xcel Energy, Inc. is a public utility company based in Minneapolis, Minnesota, serving customers in Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas, and Wisconsin. Primary services are electricity and natural gas...

  • Ohio
    Ohio
    Ohio is a Midwestern state in the United States. The 34th largest state by area in the U.S.,it is the 7th‑most populous with over 11.5 million residents, containing several major American cities and seven metropolitan areas with populations of 500,000 or more.The state's capital is Columbus...

     – Duke Energy
    Duke Energy
    Duke Energy , headquartered in Charlotte, North Carolina, is an energy company with assets in the United States, Canada and Latin America.-Overview:...

    , East Ohio Gas
  • Oklahoma
    Oklahoma
    Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...

     – Oklahoma Gas & Electric
    Oklahoma Gas & Electric
    Oklahoma Gas & Electric is a regulated electric utility company that serves over 750,000 customers in Oklahoma and western Arkansas. On December 9, 2007 OG&E experienced the worst power outage in Oklahoma history with over 250 thousand customers without power and over 630 thousand state wide...

    , Oklahoma Natural Gas, Xcel Energy
    Xcel Energy
    Xcel Energy, Inc. is a public utility company based in Minneapolis, Minnesota, serving customers in Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas, and Wisconsin. Primary services are electricity and natural gas...

    , Chesapeake Energy
    Chesapeake Energy
    Chesapeake Energy is the second largest producer of natural gas in the United States, a top 15 producer of U.S. liquids and the most active driller of new wells, according to an November 2011 investor presentation. It recorded 3Q 2011 natural gas production of an average of approximately of...

  • Oregon
    Oregon
    Oregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...

     – Northwest Natural Gas
  • Pennsylvania
    Pennsylvania
    The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...

     – UGI
    UGI Corporation
    UGI Corporation is a public utility holding company with a variety of assets based in King of Prussia, Pennsylvania.-History:UGI was incorporated in 1882 as United Gas Improvement Co. It encouraged the formation of United Electric Company of New Jersey in 1899...

    , EQT Corporation, National Fuel Gas
    National Fuel Gas
    National Fuel Gas , Co. is an energy company. It consists of five business segments:Utility, Pipeline and Storage, Exploration and Production, Energy Marketing, and Timber. National Fuel Gas wasincorporated in 1902 and is based in Williamsville, New York....

  • Rhode Island
    Rhode Island
    The state of Rhode Island and Providence Plantations, more commonly referred to as Rhode Island , is a state in the New England region of the United States. It is the smallest U.S. state by area...

     – National Grid USA
    National Grid plc
    National Grid plc is a multinational electricity and gas utility company headquartered in London, United Kingdom. Its principal activities are in the United Kingdom and northeastern United States and it is one of the largest investor-owned energy companies in the world.National Grid is listed on...

  • South Carolina
    South Carolina
    South Carolina is a state in the Deep South of the United States that borders Georgia to the south, North Carolina to the north, and the Atlantic Ocean to the east. Originally part of the Province of Carolina, the Province of South Carolina was one of the 13 colonies that declared independence...

     – SCANA Corporation, Piedmont Natural Gas
  • South Dakota
    South Dakota
    South Dakota is a state located in the Midwestern region of the United States. It is named after the Lakota and Dakota Sioux American Indian tribes. Once a part of Dakota Territory, South Dakota became a state on November 2, 1889. The state has an area of and an estimated population of just over...

     – Xcel Energy
    Xcel Energy
    Xcel Energy, Inc. is a public utility company based in Minneapolis, Minnesota, serving customers in Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas, and Wisconsin. Primary services are electricity and natural gas...

  • Tennessee
    Tennessee
    Tennessee is a U.S. state located in the Southeastern United States. It has a population of 6,346,105, making it the nation's 17th-largest state by population, and covers , making it the 36th-largest by total land area...

     – Piedmont Natural Gas
  • Texas
    Texas
    Texas is the second largest U.S. state by both area and population, and the largest state by area in the contiguous United States.The name, based on the Caddo word "Tejas" meaning "friends" or "allies", was applied by the Spanish to the Caddo themselves and to the region of their settlement in...

     – Patara Oil & Gas LLC, Texas Natural Gas, Xcel Energy
    Xcel Energy
    Xcel Energy, Inc. is a public utility company based in Minneapolis, Minnesota, serving customers in Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas, and Wisconsin. Primary services are electricity and natural gas...

    , CoServ Gas, Atmos Energy
    Atmos Energy
    Atmos Energy Corporation , headquartered in Dallas, Texas, is the largest distributor of natural gas in the United States, serving 3.2 million customers nationwide. Atmos acquired TXU's natural gas and pipeline holdings in 2004. The company began as Energas in 1983, a spinoff of the natural gas...

    , Direct Energy
    Direct Energy
    Direct Energy is a North American retailer of energy and energy services. The company was founded in 1986. With over six million customer relationships in Canada and the United States, it is the largest energy and home services retailer in North America. The current President and Chief Executive...

    , Transwestern Pipeline
    Transwestern Pipeline
    Transwestern Pipeline Company, LLC owns and operates a natural gas transmission system that provides access to natural gas supplies in the San Juan and Rocky Mountain Basins in northwest New Mexico, southwest Colorado, the Texas-Oklahoma Panhandle, and the Permian Basin region of West Texas and...

    , Florida Gas Transmission Company, Gulf South Pipe Line, J-W Operating Company
    J-W Operating Company
    J-W Energy Company is an Energy Services and Energy Development company with six primary business units that specializes in natural gas compression, gas measurement, gas gathering, and processing, cased-hole wireline services, drilling, workover and exploration and production and oilfield equipment...

  • Utah
    Utah
    Utah is a state in the Western United States. It was the 45th state to join the Union, on January 4, 1896. Approximately 80% of Utah's 2,763,885 people live along the Wasatch Front, centering on Salt Lake City. This leaves vast expanses of the state nearly uninhabited, making the population the...

     – Questar
  • Vermont
    Vermont
    Vermont is a state in the New England region of the northeastern United States of America. The state ranks 43rd in land area, , and 45th in total area. Its population according to the 2010 census, 630,337, is the second smallest in the country, larger only than Wyoming. It is the only New England...

     – Northeast Utilities
    Northeast Utilities
    Northeast Utilities is a publicly-traded, Fortune 500 energy company headquartered in Berlin, Connecticut, with several regulated subsidiaries offering retail electricity and natural gas service to more than 2.1 million customers in New England....

  • Virginia
    Virginia
    The Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...

     – EQT Corporation, Washington Gas
    Washington Gas
    WGL Holdings, Inc. , is a public utility holding company located in the United States that serves customers in the District of Columbia, Maryland, and Virginia...

  • Washington – Puget Sound Energy
    Puget Sound Energy
    Puget Sound Energy is Washington state's oldest local energy utility providing electrical power and natural gas in the Puget Sound region of the northwest United States...

  • West Virginia
    West Virginia
    West Virginia is a state in the Appalachian and Southeastern regions of the United States, bordered by Virginia to the southeast, Kentucky to the southwest, Ohio to the northwest, Pennsylvania to the northeast and Maryland to the east...

     – EQT Corporation, NiSource
    NiSource
    NiSource, Inc. , based in Merrillville, Indiana, is a Fortune 500 company engaged in natural gas transmission, storage and distribution, as well as electric generation, transmission and distribution...

  • Wisconsin
    Wisconsin
    Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

     – We Energies, Xcel Energy
    Xcel Energy
    Xcel Energy, Inc. is a public utility company based in Minneapolis, Minnesota, serving customers in Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas, and Wisconsin. Primary services are electricity and natural gas...

  • Wyoming
    Wyoming
    Wyoming is a state in the mountain region of the Western United States. The western two thirds of the state is covered mostly with the mountain ranges and rangelands in the foothills of the Eastern Rocky Mountains, while the eastern third of the state is high elevation prairie known as the High...

     – Questar
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OK