Trojan Technologies wants to zap you. The company manufactures ultraviolet (UV) lighting systems for disinfecting wastewater and treating contaminated soil and groundwater. Trojan's wastewater treatment systems are used in about 4,000 municipalities in 50-plus countries. The company's UV light systems work by altering the DNA in microorganisms and are an alternative to traditional chlorine-based disinfection systems. Trojan also makes UV products that cleanse water used in industrial processes such as food production and electronics manufacturing. Other products include residential UV systems for drinking water. Danaher controls Trojan.

Although South Central Power Company may sound like a power plant in Watts, Los Angeles, it is in fact a member-owned cooperative that provides electricity to consumers and businesses in southern Ohio. An affiliate of the nationwide Touchstone Energy Cooperative network, the electric cooperative provides power to more than 110,000 customers over more than 11,000 miles of power lines. In addition to distributing electricity, South Central Power also provides outdoor lighting, surge suppression products, security systems, water heater switches, and other energy-related services.

Ozocan can meet the ozone generator and purifier needs of its water and waste water clients. Ozocan (formerly Hankin Water Technologies) provides water-purification equipment for aquaculture, commercial aquariums, drinking-water treatment, industrial-waste treatment, and other uses. The company has also supplied ozone to laminating plants to speed up the application of polyethylene to paper. Ozone systems have been used to treat drinking water for decades, in both municipal and commercial bottling plants, and have been widely used in swimming pools since the 1950s. The company was established in 1954.

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.

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.

United Air Specialists has ESP, and the company knows just when to cause static. The company's industrial air pollution control unit makes electrostatic precipitators (ESP) that electrify airborne particles and remove them from the air. United Air Specialists also makes commercial air-cleaning systems, including kitchen emissions systems. In addition, the company makes electrostatic fluid control and high-precision spraying equipment. The company's products are used in offices, hospitals, bars, schools, and industrial settings. United Air Specialists, founded in 1966, is part of the industrial and environmental filtration business unit of manufacturing group CLARCOR.

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.

3E won't touch your hazardous materials, but the company will tell you what you need to know about them. 3E provides environmental, health, and safety (EH&S) information management services to help customers respond to emergencies and comply with federal regulations. The company maintains a database of 3.7 million material safety data sheets about materials used at the facilities of its more than 5,000 customers worldwide, and it provides around-the-clock telephone access to hazardous-materials experts. Customers include companies and governmental bodies such as Bostik, Southwest Airlines, Costco Wholesale, and the City of Amarillo. In 2010 the company agreed to be acquired by Verisk Analytics for $110 million.

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.

Enersis S.A., through its subsidiaries, engages in electric power generation, transmission, and distribution in Argentina, Brazil, Chile, Colombia, and Peru. It generates electricity using water, coal, oil or natural gas, and wind resources. The company also transports natural gas to refineries, generators, distribution companies, and industrial and mining clients; develops real estate; provides consulting and engineering services in various specialties; and engages in tunnel operation. In addition, it provides information technology (IT) services, which include outsourcing and infrastructure, data centers, contact centers and mass printing services, remote applications service provider, and assessment and implementation of technology solutions to support business processes; products integration, information systems services and technologies, and implementation and maintenance; and IT solution construction and development for high availability and complex business processes. Further, Enersis S.A. offers various products and services related to electricity comprising measuring and certification services; engineering, construction, assembly, and electric power operations; and energy consulting services to companies in various industrial sectors, such as retail, telecommunications, manufacturing, agro-industrial, and mining. As of December 31, 2008, it had an installed generation capacity of 13,893 MW, and supplied electricity to approximately 12 million customers. The company was formerly known as Compania Chilena Metropolitana de Distribucion Electrica S.A. and changed its name to Enersis S.A. in 1988. Enersis S.A. was founded in 1889 and is headquartered in Santiago, Chile. Enersis S.A. operates as a subsidiary of Endesa Latinoamerica SA.

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