Enron Corporation was an American energy, commodities, and services company based in Houston, Texas. It was founded by Kenneth Lay in 1985 as a merger between Lay's Houston Natural Gas and InterNorth, both relatively small regional companies. Before its bankruptcy on December 2, 2001, Enron employed approximately 20,600 staff and was a major electricity, natural gas, communications, and pulp and paper company, with claimed revenues of nearly $101 billion during 2000. Fortune named Enron "America's Most Innovative Company" for six consecutive years.
InterNorth Inc. was a large energy company headquartered at the Northern Natural Gas Building in Omaha, Nebraska, in the United States, specializing in natural gas pipelines but also a force in the plastics industry, coal and petroleum exploration and production. It was a predecessor to Enron Corporation.
Dynegy Inc. is an electric company based in Houston, Texas. It owns and operates a number of power stations in the U.S., all of which are natural gas-fueled or coal-fueled. Dynegy was acquired by Vistra Corp on April 9, 2018. The company is located at 601 Travis Street in Downtown Houston. The company was founded in 1984 as Natural Gas Clearinghouse. It was originally an energy brokerage, buying and selling natural gas supplies. It changed its name to NGC Corporation in 1995 after entering the electrical power generation business.
TC Energy Corporation is a major North American energy company, based in the TC Energy Tower building in Calgary, Alberta, Canada, that develops and operates energy infrastructure in Canada, the United States, and Mexico. The company operates three core businesses: Natural Gas Pipelines, Liquids Pipelines and Energy.
Atmos Energy Corporation, headquartered in Dallas, Texas, is one of the United States' largest natural-gas-only distributors, serving about three million natural gas distribution customers in over 1,400 communities in nine states from the Blue Ridge Mountains in the East to the Rocky Mountains in the West.
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.
El Paso Corporation was a provider of natural gas and related energy products and was one of North America's largest natural gas producers until its acquisition by Kinder Morgan in 2012. It was headquartered in Houston, Texas. United States.
The Williams Companies, Inc., is an American energy company based in Tulsa, Oklahoma. Its core business is natural gas processing and transportation, with additional petroleum and electricity generation assets. A Fortune 500 company, its common stock is a component of the S&P 500.
Natural Gas Pipeline Company of America (NGPL) is a natural gas pipeline company. It owns pipelines which bring natural gas from the Texas Permian Basin and Gulf of Mexico into the Chicago area. It has had several corporate owners over the past century, and is owned by Kinder Morgan, Brookfield Infrastructure Partners, and ArcLight Capital Partners.
Kinder Morgan, Inc. is one of the largest energy infrastructure companies in North America. The company specializes in owning and controlling oil and gas pipelines and terminals.
Calpine Corporation is the largest generator of electricity from natural gas and geothermal resources in the United States, with operations in competitive power markets.
Prisma Energy International Inc., was a former subsidiary of Enron Corporation, formed in 2003 to own and manage the majority of Enron's overseas assets, formerly known as "Enron International". Prior to its official organization, Prisma was referred to within Enron as "InternationalCo". Enron's original bankruptcy reorganization plan, presented in early 2002, would have created a company broadly similar to Prisma, but including Portland General Electric and the energy trading business, both later divested separately. As one of the final steps in Enron's liquidation, following their 2001 bankruptcy, Prisma was sold to Ashmore Energy International Ltd., a unit of Ashmore Group Plc., in 2006. Prisma was structured as an 'offshore' United States corporation incorporated in the British Overseas Territory of the Cayman Islands, but with its headquarters in Houston, Texas. It served as a holding company for 15 gas and electricity businesses. Its subsidiary, Prisma Energy International Services LLC, employed approximately 125 individuals, most at its headquarters in Houston, Texas. Assets in which Prisma Energy managed an interest employed an additional 6,500 employees worldwide. Following its 2006 sale to Ashmore Energy International Limited, Prisma Energy International Inc. was merged/amalgamated with Ashmore Energy International Limited with Prisma Energy being the survivor company. In December 2006, Prisma Energy International Inc. changed its name to Ashmore Energy International and, subsequently, in May 2007 to AEI.
APA Corporation is the holding company for Apache Corporation, an American company engaged in hydrocarbon exploration. It is organized in Delaware and headquartered in Houston. The company is ranked 431st on the Fortune 500.
SemGroup Corporation was a publicly-traded company engaged in natural gas, petroleum, and propane pipeline transport. It was organized in Delaware and headquartered in Tulsa, Oklahoma. In December 2019, the company was acquired by Energy Transfer LP.
Kenneth Lee Lay was an American businessman who was the founder, chief executive officer and chairman of Enron. He was heavily involved in the eponymous accounting scandal that unraveled in 2001 into the largest bankruptcy ever to that date. Lay was indicted by a grand jury and was found guilty of 10 counts of securities fraud at trial. Lay died in July 2006 while vacationing in his house near Aspen, Colorado, three months before his scheduled sentencing. A preliminary autopsy reported Lay died of a heart attack caused by coronary artery disease. His death resulted in a vacated judgment.
Rebecca P. Mark-Jusbasche, known during her international business career as Rebecca Mark, is the former head of Enron International, a subsidiary of Enron. She was also CEO of Azurix Corp., a publicly traded water services company originally developed by Enron International. Mark was promoted to Vice Chairman of Enron in 1998 and was a member of its board of directors. She resigned from Enron in August 2000.
Noble Energy, Inc. was a company engaged in hydrocarbon exploration headquartered in Houston, Texas. In October 2020, the company was acquired by Chevron Corporation.
Oscar Sherman Wyatt Jr. is an American businessman and self made millionaire. He was the founder of Coastal Corporation and a decorated bomber pilot in World War II. In 2007 the U.S. federal court in Manhattan tried him for illegally sending payments to Iraq under the Oil-for-Food Program.
Coastal Corporation was a diversified energy and petroleum products company headquartered at 9 Greenway Plaza in Greenway Plaza, Houston, Texas. The company was founded in 1955 by Oscar Wyatt and incorporated in 1955 as Coastal States Gas Producing Company. It merged with the El Paso Corporation in 2001. As of 1999, Coastal was a Fortune 500 company with 13,300 employees and annual revenues of $8.2 billion.
Arthur B. Belfer was a Polish-born, American businessman and philanthropist who founded the Belco Petroleum Corporation.
