Gary-Williams Energy Corporation (GWEC) is a small, independent oil and gas company, headquartered in Denver, with operations primarily in the Mid-Continent region of the United States. With approximately 300 employees, the company's subsidiaries include Wynnewood Refining Company (Oklahoma), Gary-Williams Production Company and Gary-Williams Real Estate Company. Refining and wholesale marketing are now the company's primary businesses. The company maintains a small marketing office in Oklahoma City. Today, the company's major asset is a 70,000 BPD crude oil refinery in Wynnewood, Oklahoma, purchased from Kerr-McGee in mid-1995, and operated as Wynnewood Refining Company (WRC). The refinery produces gasoline, diesel fuel, military jet fuel, solvents and asphalt.

Holly Energy Partners is having a jolly good time piping petroleum. The company transports refined petroleum products and crude oil from Holly Corporation's Navajo refinery in New Mexico and Woods Cross refinery in Utah, and Alon USA's Big Spring refinery in Texas, to customers in the southwestern US. It operates 1,330 miles of refined petroleum pipelines (including 340 miles of leased pipelines), 11 distribution terminals, one jet fuel terminal, and two truck-loading facilities used to transport gasoline, diesel, and jet fuel. Holly Corporation, the parent of the company's general partner (Holly Logistics), holds a 46% stake in Holly Energy Partners.

Northern Natural Gas (NNG) keeps the pipes gassed up. The company operates 15,140 miles of pipeline stretching from the Permian Basin in Texas to the Great Lakes in the Midwest. It also provides transportation and storage services (five natural gas storage facilities) to some 75 utilities and a variety of other customers in the Upper Midwest. NNG has a 5.3 billion cu. ft. per day market area peak capacity. Dynegy took over NNG in 2002 from the pipeline unit's former parent, bankrupt energy giant Enron. The deal was part of Dynegy's proposed acquisition of Enron, which was called off. To strengthen its own balance sheet, Dynegy sold NNG to MidAmerican Energy Holdings later that year.

Diamond Offshore Drilling, Inc. was founded in 1989 and is headquartered in Houston, Texas. Diamond Offshore Drilling, Inc. operates as an offshore oil and gas drilling contractor worldwide. Diamond Offshore Drilling, Inc. provides offshore drilling services in the deep water, harsh environment, conventional semisubmersibles, and jack-up markets to independent oil and gas companies and government-owned oil companies. As of December 31, 2008, Diamond Offshore Drilling, Inc. operated a fleet of 45 offshore rigs comprising 30 semisubmersibles, 14 jack-ups, and 1 drillship. Diamond Offshore Drilling, Inc. operates as a subsidiary of Loews Corporation. The compnay also provides project management and other drilling-related services. Loews Corp. owns 50.4% of the company.

Boralex Inc. produces wood-residue, natural gas-fired cogeneration, hydroelectric, and wind energy in Quebec, the northeastern US, and France. Boralex owns and operates 21 power stations with a combined capacity of about 400 MW: seven hydroelectric plants (Canada, France, and the US), seven wood-residue thermal power stations (Maine and New York), and 10 wind farms in France. Boralex Inc. also manages 10 power generating facilities (190 MW of cumulative electricity) owned by Boralex Power Income Fund, in which it owns a 23% stake. Canada-based paper and packaging group Cascades owns 34% of Boralex.

Approach Resources takes a different approach to natural gas and oil exploration, development, and production. Specializing in finding and exploiting unconventional reservoirs, Approach Resources Inc. operates primarily in West Texas' Ozona Northeast field. Approach Resources Inc. also has operations in western Kentucky, and northern New Mexico. The company's unconventional designation results from a focus on developing natural gas reserves in tight gas sands and shale areas, necessitating a reliance on advanced completion, fracturing and drilling techniques. In 2008 Approach Resources reported proved reserves of 193.7 billion cu. ft. of oil equivalent, with a reserve life index of about 19 years. Yorktown Energy Partners controls the company.

Questerre Energy's quest is the exploration for and production of oil and gas in Canada. The company focuses on developing large-scale natural gas projects, in Alberta, British Columbia, Quebec, and Saskatchewan. Questerre Energy's key asset is in the shales of the St. Lawrence Lowlands, between Montreal and Quebec City. It also holds assets in the Beaver River field, a large natural gas field in northeastern British Columbia, and has exploration acreage in the Hector and Westlock areas of central and southern Alberta. In 2008 the company reported proved plus probable reserves of 2.9 million barrels of oil equivalent. The Company’s common shares trade on the TSX and Oslo Stock Exchange under the symbol QEC.

Fabricom is a major provider of installation and maintenance services with a focus on serving the offshore and onshore oil and gas industry. Fabricom designs, builds, and maintains such installations as offshore drilling rigs and platforms and onshore oil and gas terminals, as well as processing plants, gas processing stations, and pipelines. Fabricom provides engineering input and specialized advice in the designing of construction projects, as well as on-site installation, commissioning, and maintenance. Fabricom has operating units in Belgium, the Netherlands, Norway, and the UK. Fabricom is a major division of giant industrial services group GDF SUEZ.

Consolidated Edison Solutions (ConEdison Solutions) works to solve the energy supply needs of retail residential, business, and government customers in the Northeast. The company markets electricity and natural gas as an alternative supplier for homes and businesses in deregulated utility markets. It also provides energy procurement and management services and efficiency program consulting. ConEdison Solutions, a subsidiary of utility giant Consolidated Edison, has offices in Kansas, New York, Massachusetts, New Jersey, North Carolina, Virginia, Texas, and Florida. It also partners with government entities to help them meet national efficiency and security objectives. In 2009 the company had 75,000 customers.

GE's Oil & Gas business, headquartered in Florence, Italy, is a leader in the development and delivery of advanced product and service offerings for the global oil and gas industry. GE Oil & Gas provides compression technologies, transportation, processing, refining, and storage, drilling and production services, and power generation turnkey services to companies worldwide. GE Oil & Gas has an installed base of 11,000 compressors, 18,000 centrifugal pumps, 5,000 turbines, and 2,000 turboexpanders. GE Oil & Gas acquired leading oilfield services company VetcoGray in 2007. Other major brands include Conmec (turbomachinery), Nuovo Pignone (compressors and pumps), Odessa (turbine overhaul), and PII (pipeline inspection).

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