SEMCO ENERGY is owned by energy investment firm Continental Energy Systems through its Cap Rock Holding unit. Alaska and Michigan have more in common than a cold climate. SEMCO ENERGY serves approximately 410,000 natural gas consumers in both states. The company's main subsidiary is utility SEMCO ENERGY Gas, which distributes gas to about 280,000 customers in 24 Michigan counties. SEMCO's ENSTAR Natural Gas unit distributes gas to about 130,000 customers in and around Anchorage, Alaska. The company's unregulated operations include propane distribution in Michigan and Wisconsin; pipeline and storage facility operation; and information technology outsourcing.

North Carolina Electric Membership Corporation (NCEMC) generates and transmits electricity to the state's 26 electric cooperatives in 93 of North Carolina's 100 counties. The co-op owns more than 600 MW of generating capacity through four primarily natural gas peak load generators, plus a 62% stake in Catawba Nuclear Station Unit 1, and a 31% stake in the common facilities of the Catawba Nuclear Station in South Carolina. It also buys power from Progress Energy, American Electric Power, and other for-profit utilities. NCEMC's member cooperatives serve more than 950,000 businesses and homes in North Carolina. The wholesale co-op also operates an energy operations center.

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.

Wahlco likes to keep it clean. It designs and manufactures air pollution control equipment, specializing in ammonia handling, flue gas conditioning, nitrogen oxide control equipment which it installs at power plants and other industrial facilities, including cement plants, oil and gas refineries, pulp and paper mills, and steel mills. Wahlco also makes products such as low-watt density heaters and specialty thermocouples for industrial applications. The company's systems and equipment can be found in more than 500 locations in more than 17 countries. Wahlco was founded by a small group of experts in 1972.

Tata Power Company keeps society going by generating electricity. The largest private power utility in India, the company specializes in generating, transmitting, and distributing electrictity. Tata Power, which has a generation capacity of more than 2,300 mega watts, provides electricity for households, as well as textile mills, refineries, water pumping plants, and textile mills, among other facilities. The company has operations in the states of Maharashtra, Jharkhand, and Karnataka. Tata Power also provides electronic equipment and project consultancy.

GeoSyntec Consultants provides services such as environmental management, geotechnical engineering, groundwater assessment and remediation, pollution prevention, and surface water management. The company operates from more than 30 offices, primarily in the US but also in Canada, Malaysia, and the UK. Its clients include Aerojet-General, AstraZeneca, Chevron, Delta Air Lines, FMC Corp., Georgia Power, Kimberly-Clark, Lockheed Martin, Pharmacia & Upjohn, and Shell Oil. Expanding its services in the water and natural resources segment, in 2010 Geosyntec acquired Rainwater Recovery, which focuses on rainwater harvesting technology.

Infiltrator Systems is not connected to The Spy Who Came In From The Cold, spy satellites, or any other relic of Cold War espionage. The company is the world's leading maker of plastic leachfield products used to handle commercial and residential wastewater. Infiltrator Systems' leachfield drainage chambers are a direct and cost-effective replacement for stone and pipe leachfields, and create a footprint only half the size of traditional leachfields. The products, which are made at facilities in Kentucky and Utah, are sold throughout the US. The company estimates that one in four septic systems in the US uses Infiltrator Systems' products.

Public utility Green Mountain Power (GMP) lights up the hills of Vermont, supplying electricity to 95,000 customers in the state. The utility also markets wholesale electricity in New England. The company operates more than 4,720 miles of transmission and distribution lines and owns a minority stake in high-voltage transmission operator Vermont Electric Power (VELCO). GMP owns about 150 MW of capacity from hydroelectric and fossil-fueled power plants, but it purchases most of its power from other utilities. The company's long-term contracts with Vermont Yankee and Hydro-Quebec provide about 75% of GMP's power supply.

Sequachee Valley Electric Cooperative Company Profile Sequachee Valley Electric Cooperative squeezes the most efficiency out of the power distribution cooperative it manages. One of 23 rural electric cooperatives in Tennessee, Sequachee Valley Electric Cooperative distributes power to more than 33,000 residential, commercial, and industrial members in part or all of Bledsoe, Coffee, Grundy, Hamilton, Marion, Rhea, Sequatchie, and Van Buren counties. It buys wholesale power from the Tennessee Valley Authority. Sequachee Valley Electric is governed by an 11-person board of directors, directly elected by its membership.

PPL packs a powerful punch in Pennsylvania, Kentucky and the UK, where it distributes electricity to 5.2 million customers through regulated subsidiaries PPL Electric Utilities (1.4 million customers), two utilities in Kentucky (1.2 million), and Western Power Distribution Holdings (2.6 million electricity customers). The company has 19,000 MW of generating capacity and also sells energy wholesale in key US markets. Once a global power player with interests in distribution companies worldwide, the company has opted for the UK as its non-US focus. Western Power Distribution operates two of the 15 distribution networks providing electricity service in the UK -- WPD (South West) and WPD (South Wales).

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