Eversource Energy is a publicly traded, Fortune 500 energy company headquartered in Hartford, Connecticut, and Boston, Massachusetts, with several regulated subsidiaries offering retail electricity, natural gas service and water service to approximately 4 million customers in Connecticut, Massachusetts, and New Hampshire.
Consolidated Edison, Inc., commonly known as Con Edison or ConEd, is one of the largest investor-owned energy companies in the United States, with approximately $12 billion in annual revenues as of 2017, and over $62 billion in assets. The company provides a wide range of energy-related products and services to its customers through its subsidiaries:
Oklahoma Gas & Electric Company is a regulated electric utility company that serves over 843,000 customers in Oklahoma and Arkansas, including 1.5 million people in the Oklahoma City Metropolitan Area. It is the leading subsidiary of OGE Energy Corp., with headquarters in downtown Oklahoma City. OGE Energy is also the former parent of Enogex Inc., a natural gas pipeline business which merged with CenterPoint Energy's midstream business to form Enable Midstream in 2013, in 2021 OGE and CenterPoint sold their general partnership in Enable Midstream to Energy Transfer. OGE Energy and its subsidiaries have about 3,100 employees.
Constellation Energy Corporation is an energy company headquartered in Baltimore, Maryland, United States. The company provides electric power, natural gas, and energy management services. It has approximately two million customers across the continental United States.
Sonat, Inc., headquartered in Birmingham, Alabama, was a large Fortune 500 American energy holding company. The company was founded in 1928 and was listed on the New York Stock Exchange under the ticker symbol "SNT". Sonat was primarily involved in transmission and marketing natural gas and oil and gas exploration and production. The company was also involved in contract offshore drilling until 1995 when the offshore business became Transocean. In 1999 Sonat merged with El Paso Corporation. The company was headquartered in the AmSouth-Sonat Tower in downtown Birmingham.
National Grid plc is a British multinational electricity and gas utility company headquartered in London, England. Its principal activities are in the United Kingdom, where it owns and operates electricity and natural gas transmission networks, and in the Northeastern United States, where as well as operating transmission networks, the company produces and supplies electricity and gas, providing both to customers in New York and Massachusetts.
CenterPoint Energy, Inc. is an American Fortune 500 electric and natural gas utility serving several markets in the American states of Indiana, Ohio, Louisiana, Minnesota, Mississippi, and Texas. It was formerly known as Reliant Energy, NorAm Energy, Houston Industries, and HL&P. The company is headquartered in the CenterPoint Energy Tower at 1111 Louisiana Street in Downtown Houston.
NiSource Inc. is one of the largest fully regulated utility companies in the United States, serving approximately 3.5 million natural gas customers and 500,000 electric customers across six states through its local Columbia Gas and NIPSCO brands. The company, based in Merrillville, Indiana, has more than 8,000 employees. As of 2018, NiSource is the sole Indiana-based utility company.
Oneok, Inc. is an American diversified corporation focused primarily on the natural gas industry, and headquartered in Tulsa, Oklahoma. The company is part of the Fortune 500 and S&P 500. Oneok was founded in 1906 as Oklahoma Natural Gas Company, but it changed its corporate name to Oneok in December 1980. It also owns major natural gas liquids (NGL) systems due to the 2005 acquisition of Koch Industries natural gas businesses.
Kansas Gas Service is the largest natural gas distribution company in the U.S. state of Kansas, operating in 82 counties. It is a regulated public utility which serves 634,000 customers in 360 communities, employing 1,000 employees. In addition to owning seven interstate pipeline connections and three intrastate pipeline connections, Kansas Gas Service operates 13,500 miles of service lines, pipelines and other natural gas properties. Headquartered in Overland Park, Kansas, the company was a division of ONEOK Inc., a Tulsa-based Fortune 200 company since 1997 until ONEOK spun off Kansas Gas Service and its two other distribution companies—Oklahoma Natural Gas Company and Texas Gas Service—to form ONE Gas in 2014.
EQT Corporation is an American energy company engaged in hydrocarbon exploration and pipeline transport. It is headquartered in EQT Plaza in Pittsburgh, Pennsylvania.
FortisBC is a Canadian owned, British Columbia based regulated utility focused on providing safe and reliable energy, including natural gas, Renewable Natural Gas, electricity and propane. FortisBC has approximately 2,600 employees serving more than 1.2 million customers in 135 B.C. communities and 58 First Nations communities across 150 Traditional Territories.
Evergy, Inc. is an American investor-owned utility (IOU) with publicly traded stock that has its headquarters in Topeka, Kansas, and in Kansas City, Missouri. The company was formed from a merger of Westar Energy of Topeka and Great Plains Energy of Kansas City, Missouri, parent company of Kansas City Power & Light. Evergy is the largest electric company in Kansas, serving more than 1.6 million residential, commercial and industrial customers in Kansas and Missouri. Evergy has a generating capacity of 16,000 megawatt electricity from its over 40 power plants in Kansas and Missouri. Evergy service territory covers 28,130 square miles (72,900 km2) in east Kansas and west Missouri. Evergy owns more than 13,700 miles (22,000 km) of transmission lines and about 52,000 miles of distribution lines.
The Oklahoma Natural Gas Company Building is a historic building in Tulsa, Oklahoma, at 624 South Boston Ave. It was one of the first local Art Deco buildings built in the new Art Deco style, along with the Public Service of Oklahoma Building. This choice by the relatively conservative utility companies made the style acceptable in the city, with many Art Deco buildings built subsequently in Tulsa. The building was designed by Frank V. Kirshner and Arthur M. Atkinson. It was built of reinforced concrete, and clad in buff brick, except for the lower two stories, which are clad in limestone. The verticalness of the building is emphasized by piers rising the entire height of the facade with windows placed between the piers.
Madison Gas and Electric Company (MGE) is the primary subsidiary of MGE Energy, Inc.. As a regulated utility, it primarily serves the Madison, Wisconsin metropolitan area with electricity, gas and green energy options.
Missouri Gas Energy (MGE) was a natural gas distribution company headquartered in Kansas City, Missouri in the United States, with offices in St. Joseph, Lee's Summit, Warrensburg, Joplin, Republic, Neosho and Monett. MGE served over in 155 western Missouri communities and was a division of the Southern Union Company until it was ultimately sold to the Spire Inc. Its business is regulated by the Missouri Public Service Commission.
ONE Gas, Inc. is a stand-alone, 100 percent regulated, publicly traded natural gas utility and is one of the largest natural gas utilities in the United States.
Unitil Corporation is an interstate electricity and natural gas utility company that provides services for New Hampshire, Massachusetts and Maine. Its earliest predecessor company, the Portland Gas Light Company, was founded in Maine in 1849. The current company was set up in 1984 and is based in New Hampshire. With a market cap of 686.51M, it provides electric services to about 102,400 customers and natural gas to over 75,900 customers. The service territory of Unitil includes business districts and recreational centers as well as commercial and industrial business, such as electronic component manufacturers and education institutes. The company has an enterprise value of $766.54 million. The non-utility business is operated through the company's subsidiary, U-source, which is a national energy brokering and consulting company.
Niska Gas Storage Partners is a global gas storage service provider and the largest gas storage firm in North America. It operates business in Alberta, Canada and California, US and Oklahoma. The company owns a natural gas storage capacity of 225.5 billion cubic feet. It generates revenue by charging monthly natural gas storage fees to a variety of customers including institutions, gas generators, etc. AECO Hub, consisting of three sub-facilities located both in Canada and US, is the core storage facility of the company and is one of the most important natural gas producing sites in North America. The company has a market capitalization of $1.05 billion and an enterprise value of 1.05 billion.
Texas Gas Service is the third largest natural gas distribution company in the U.S. state of Texas. It is a regulated public utility which serves more than 884,000 customers in 100 communities, employing 800 employees. It operates 10,900 miles of service lines, pipelines and other natural gas distribution properties. Texas Gas Service is a division of ONE Gas, Inc.
