Hokkaido Electric Power Co. (HEPCO) distributes electricity to almost 3.9 million residential, commercial, and industrial customers on the northernmost Japanese island, Hokkaido. The company operates more than 46,760 miles of transmission and distribution lines, and it owns thermal, hydroelectric, and nuclear power plants (including the No. 1 and No. 2 reactors at Tomari Power Station). HEPCO also purchases and markets wholesale energy; other operations include engineering and construction, energy consulting, electrical appliance sales, telecommunications, information technology, and utility-related services. New businesses include medical imaging systems and realty. The company was founded in 1951.

NSTAR is looking to outshine its rivals through the efficiency of its regulated electric and natural gas sales, distribution, and transmission operations. The utility holding company transmits and distributes electricity to almost 1.2 million homes and businesses through NSTAR Electric and serves some 300,000 natural gas customers in Massachusetts through NSTAR Gas. The company also markets wholesale electricity, and operates liquefied natural gas (LNG) processing and storage facilities. Its NSTAR Communications unit owns about 240 miles of fiber optic network. In 2010 the company agreed to be acquired by Northeast Utilities for about $4.2 billion.

Pennichuck Corporation, through its subsidiaries, engages in the collection, storage, treatment, and distribution of potable water for domestic, industrial, commercial, and fire protection service in New Hampshire and Massachusetts. The company also provides non-regulated water management services, including monitoring, maintenance, testing, and compliance reporting services for water systems of various towns, businesses, and residential communities. In addition, Pennichuck Corporation involves in real estate management and commercialization activities. The company was founded in 1852 and is headquartered in Merrimack, New Hampshire.

EQT Corporation, together with its subsidiaries, operates as an integrated energy company in the United States. The company operates in three segments: EQT Production, EQT Midstream, and Distribution. The EQT Production segment engages in the exploration, development, and production of natural gas and crude oil in the Appalachian Basin. This segment’s properties are located primarily in Kentucky, West Virginia, Virginia, and Pennsylvania. As of December 31, 2009, it had 4.1 trillion cubic feet of proved reserves across 3.4 million acres. The EQT Midstream segment provides gathering, processing, transmission, and storage services to third parties in the Appalachian Basin. It has approximately 10,650 miles of gathering lines and 970 miles of transmission lines. The Distribution segment engages in the distribution and sale of natural gas to residential, commercial, and industrial customers in southwestern Pennsylvania, West Virginia, and eastern Kentucky. This segment served natural gas to approximately 275,900 customers comprising of 257,300 residential, and 18,600 commercial and industrial customers. The company was formerly known as Equitable Resources, Inc. and changed its name to EQT Corporation in February 2009. EQT Corporation was founded in 1925 and is headquartered in Pittsburgh, Pennsylvania.

Lyntegar Electric Cooperative is based in the agricultural heart of the Texas Panhandle, where the summer heat sizzles and the winter ice storms freeze. The rural power cooperative provides electric utility services to customers in Borden, Dawson, Gaines, Garza, Hockley, Lynn, Martin, Terry, and Yoakum counties. The cooperative also sells electric grills and provides internet and television services. In addition, Lyntegar Electric Cooperative produces Typically Texas Cookbooks, which share collections of recipes used by cooperative member-consumers.

IBERDROLA, S.A., together with its subsidiaries, engages in producing, switching, retailing, and distributing electricity and gas. The company primarily generates nuclear, fossil-fuel, hydroelectric, and wind power. It also offers raw materials or primary energies required for electric power generation; energy, engineering, computer, and telecommunications services; services relating to the Internet; urban and gas retailing services; regasification, transmission or distribution services, as well as other gas storage services; assistance and support services; and real estate and other related services. In addition, the company involves in the treatment and distribution of water; representation, marketing, and distribution of various goods and services, products, articles, merchandise, computer programs, industrial equipment, machinery, machine and hand tools, spare parts, and accessories; and research, plan, and study of investment and corporate organization projects, as well as develops, sets up, and promotes industrial, commercial, and service companies. As of December 31, 2009, it served approximately 10 million users in Spain; 3.2 million electric customers and 2 million gas customers in the United Kingdom; 1.84 million electric customers and 0.93 million gas users in Latin America. The company is based in Bilbao, Spain.

Global Environmental Energy Corporation wants to improve China and other countries by turning their unwanted waste into energy. It also searches for oil and gas and has interests in clean coal technology. The company's alternative power generation technology uses waste from industrial, municipal, and agricultural facilities to produce electricity for its clients. Subsidiary Biosphere Development Corp has sold nine Biosphere Process Systems in China and one in Lebanon. Subsidiary Sahara Petroleum Exploration explores for oil in North Africa but has been inactive since 2007.

ATCO operates worldwide in utilities, power generation, and related services. Majority-owned Canadian Utilities oversees most of the group's energy businesses, including ATCO Electric and ATCO Gas (transmission and distribution) and ATCO Power (generation). Other holdings include gas gatherer and processor ATCO Midstream, and gas transporter ATCO Pipelines. ATCO I-Tek provides IT, billing, and customer care services. ATCO Structures & Logistics manufactures modular buildings and provides logistical and noise abatement services. Utilities ATCO Electric (with nearly 207,000 customers) and ATCO Gas (with more than 1 million customers) account for the largest slice of ATCO's revenues.

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.

Steril-Aire lets you breathe easy. The company's products use ultraviolet "C" wavelength (UVC) energy to destroy molds and infectious diseases in HVAC systems. Steril-Aire makes and markets a wide range of UVC devices and accessories for commercial, residential, school, food processing, health care, and industrial applications. The company has an extensive portfolio of patents covering many aspects of UVC germicidal technology. Some products are designed for outdoor installation, and are water resistant. All others are designed for 99% relative humidity and function properly under those conditions.

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