Calvalley Petroleum searches below the plateau for fuel for its customers. The company focuses on exploring for and producing oil and natural gas at Block 9 in the Republic of Yemen. The company, which has about 16 working wells (more than 50 have been drilled), produces some 5,000 barrels of oil each day. Its subsidiary Calvalley Petroleum (Cyprus) Ltd. is the operator of the property, which includes about 552,000 acres of land in the Sayun-Masila basin. Calvalley Petroleum has a net proved plus probable reserves of 7.8 billion barrels of oil equivalent.

Connexus Energy connects more Minnesotans to electricity than any other cooperative. The member-operated organization distributes power to more than 123,000 customers in the northern suburbs of Minneapolis-St. Paul. Connexus buys its power from generation and transmission cooperative Great River Energy and distributes it through more than 9,050 miles of power line. It also operates 43 electrical substations. Residential customers account for the bulk of sales in a territory that comprises parts of Anoka, Chisago, Hennepin, Isanti, Ramsey, Sherburne, and Washington counties.

Lincoln Electric System (LES) takes care of all of the power needs for residents and businesses in Lincoln, Nebraska. The company generates, purchases, transmits, and distributes electricity for approximately 128,130 residential, commercial, and industrial customers in Lincoln and surrounding communities. LES has interests in fossil-fueled power plants and wind energy facilities; the utility also purchases power through contracts with other generation utilities, such as the Nebraska Public Power District and the Western Area Power Administration, and it markets power to wholesale customers.

Pinnacle West Capital is at the peak of the energy pyramid in Arizona. It is the holding company for the state's largest electric utility, Arizona Public Service (APS), which transmits and distributes electricity to 1.1 million residential, commercial, and industrial customers throughout most of the state. The utility also has more than 6,280 MW of generating capacity. Through APS and other subsidiaries, Pinnacle West markets wholesale and retail power in Arizona and the western US. The company also develops and manages real estate and invests in energy ventures.

Ohio Valley Electric and its subsidiary, Indiana-Kentucky Electric, generate power in the Ohio River Valley region. The company operates two coal-fired plants with collectively about 2,400 MW of generating capacity. Ohio Valley Electric's Kyger Creek Plant at Cheshire, Ohio, and Indiana-Kentucky Electric's Clifty Creek Plant at Madison, Indiana are linked by 776 miles of transmission lines. Most of Ohio Valley Electric's power goes to its shareholders, which include American Electric Power (39%), Buckeye Power Generating, LLC (18%), and Duke Energy Ohio (9%).

South Jersey Industries, Inc., through its subsidiaries, engages in the purchase, transmission, and sale of natural gas for residential, commercial, and industrial customers. It also sells natural gas and pipeline transportation capacity on a wholesale basis to various customers on the interstate pipeline system, as well as transports natural gas purchased directly from producers or suppliers to their customers. It also markets natural gas storage, commodity, and transportation assets for energy marketers, electric and gas utilities, and natural gas producers in the mid-Atlantic and southern regions of the United States. In addition, the company develops and operates energy-related projects, which provide cooling, heating, and emergency power. Further, it provides services for the acquisition and transportation of natural gas and electricity for retail end users; markets total energy management services; installs and services residential and light commercial HVAC systems; provides plumbing services; and services appliances, as well as offers meter reading services. As of December 31, 2009, South Jersey Industries, Inc. served 343,566 residential, commercial, and industrial customers primarily in southern New Jersey. South Jersey Industries, Inc. was founded in 1910 and is headquartered in Folsom, New Jersey.

RMT furnishes environmental engineering and consulting services to businesses that want to keep it clean. The company's services include solid waste management, liability reduction and remediation, air quality management, employee health and safety management, construction contracting, energy and alternative energy management, wastewater treatment, and data management services. RMT serves customers in the cement, chemicals, solid waste, electricity, forest products, metals, oil and gas, and textiles industries. Part of Alliant Energy's Integrated Services division, RMT operates 12 US offices with single locations in France and the UK.

Marsulex is scrubbing up smokestacks in North America. The company provides outsourced air-quality regulation compliance services to the oil refinery and power generation industries. Among Marsulex's emission-control products are spent acid regeneration and sulphate scrubbing systems; the firm also processes and sells sulphur by-products. Customers in Marsulex's oil-refinery segment include Shell, Petro-Canada, BP, and Sunoco. The company provides services to power-generation customers worldwide. Marsulex operates seven plants in Canada and ten in the US, including one in Southern California. In 2009 investment firm Harrowston Holding acquired control of Marsulex.

Bonneville Power Administration (BPA) keeps the lights on in the Pacific Northwest. The US Department of Energy power marketing agency operates a transmission grid (with more than 15,000 miles of high-voltage lines) that delivers about 35% of the electrical power consumed in the region. The electricity that BPA wholesales is generated primarily by 31 federal hydroelectric plants and one private nuclear facility. BPA also purchases power from other hydroelectric, gas-fired, and wind and solar generation facilities in North America. Founded in 1937, BPA sells power to more than 140 primary customers, mainly public and investor-owned utilities in the Pacific Northwest.

BlueStar Energy intends to burn bright in the firmament of independent electricity providers. Serving customers in the deregulated markets of Maryland, Illinois, Pennsylvania, and Washington, DC, the company offers variable- and fixed-rate and custom plans along with green energy to industrial, commercial, and residential customers. Its energy efficiency program examines customers' energy usage and offers services to decrease costs including reworking interior and exterior lighting, monitoring power use, rewiring fixtures, and performing exterior maintenance. BlueStar Energy spreads it power from offices in Chicago and Peoria, Illinois.

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