Calpine Corporation is a Fortune 500 power company founded in 1984 with headquarters in Houston, Texas. The company’s stock was traded on the New York Stock Exchange under the symbol CPN until it was delisted on December 5, 2005 due to low share price. On 31 January 2008, Calpine emerged from bankruptcy... 

Halliburton is a US-based oilfield services corporation with international operations in more than 70 countries. Halliburton’s major business segment is the Energy Services Group (ESG). ESG provides technical products and services for oil and gas exploration and production. Energy Services, the... 

After the Rio Tinto Alcan and Rusal, Alcoa is listed as the wrold’s third largest producer of aluminum. The name Alcoa stands for ALuminum Corporation Of America. Headquartered in Pittsburgh, Pennsylvania, Alcoa managed their operations in nearly 44 countries. Another business from Alcoa besides... 

Enron was an American energy company based in Houston, Texas, and was being one of the world’s leading electricity, natural gas, pulp and paper, and communications companies, with claimed revenues of nearly $101 billion in 2000. Until 2001, Enron claimed has employed approximately 22,000 people. Enron... 

Based in Houston, Texas, Dynegy is a large owner and operator of power plants and a player in the natural gas liquids and coal business. The corporate headquarters are in Suite 5800 in the Wells Fargo Plaza at 1000 Louisiana Street in Downtown Houston. Once known as “The Natural Gas Clearinghouse,”... 

ATCO Ltd. is an Alberta based corporation with more than 7,000 employees operating across three main business divisions: Power Generation; Utilities (natural gas and electricity transmission and distribution) and Global Enterprises, with companies active in industrial manufacturing, technology, logistics... 

OAO Gazprom (Public Joint Stock Company Gazprom) is the largest extractor of natural gas in the world and the largest Russian company. A separate Soviet gas industry was created in 1943. Large natural gas reserves discovered in Siberia and the Ural and Volga regions in the 1970s and 1980s enabled the... 

Exxon is a brand of fuel sold by ExxonMobil which formally replaced the Esso, Enco, and Humble brands on January 1, 1973, in the USA. The name Esso was a trademark of Standard Oil Company of New Jersey and attracted protests from other Standard Oil spinoffs because of its similarity to the name of the... 

Elf Aquitaine was a French oil company which merged with TotalFina to form TotalFinaElf. The new company changed its name to Total in 2003 . Elf has been maintained as a major brand of Total. Elf Aquitaine’s heritage is rooted among three French oil companies: Régie Autonome des Pétroles (RAP),... 

Founded in 1875 as the Continental Oil and Transportation Company, Conoco Inc. was an American oil company which based Ogden, Utah. Conoco was a coal, oil, kerosene, grease and candles distributor in the West. In June 26, 1929, Marland Oil Company acquired for a consideration of 2,317,266 shares of Conoco’s...