Kelda is a Norse word meaning source of water, and Yorkshire consumers count on the UK's Kelda Group as the source for water and wastewater services. The group's primary subsidiary, Yorkshire Water Services, serves some 1.7 million residential customers, representing more than 4.8 million people, and approximately 130,000 business customers. Its Loop subsidiary provides customer relationship management services for Yorkshire Water and other utilities. In addition, Kelda is engaged in real estate development through its KeyLand unit which develops or disposies of brownfield sites. In 2008 Kelda was acquired by a consortium of investment companies made up of Citigroup, GIC, Infracapital and HSBC.

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.

Integrys Energy Group, Inc., through its subsidiaries, operates as a regulated electric and natural gas utility company in the United States and Canada. It provides natural gas utility services in Chicago, Wisconsin, Michigan, and Minnesota. As of December 31, 2009, Integrys Energy Group, Inc. served approximately 1,669,000 residential, commercial and industrial, transportation, and other customers. It had approximately 22,000 miles of natural gas distribution mains; and approximately 1,010 miles of natural gas transmission mains. The company also generates and distributes electric energy form coal, natural gas, fuel oil, hydroelectric, and wind resources in Wisconsin and Michigan. It served approximately 489,000 residential, commercial and industrial, wholesale, and other customers. In addition, Integrys Energy offers nonregulated energy supply and services; and electric transmission services. Integrys Energy Group, Inc. was formerly known as WPS Resources Corporation and changed its name to Integrys Energy Group, Inc. in February 2007. Integrys Energy Group, Inc. was founded in 1883 and is based in Chicago, Illinois.

Anglian Water provides regulated water, wastewater, and environmental services to some 6 million residential, commercial, and industrial customers, primarily in eastern England. The main operating subsidiary of AWG, it provides water services to 4.2 million customers across East Anglia and the East Midlands, supplying 1.2 billion liters of water daily. Anglian Water maintains a network of more than 37,000 km of water mains and treats wastewater (from 5.5 million customers) at its more than 1,100 sewage treatment works. The company also manages water and wastewater systems for the City of Hartlepool in northern England.

Ontario Power Generation produces most of the electricity supply for the Canadian province of Ontario. The company, owned by the province, operates fossil-fueled, nuclear, hydroelectric and wind power plants that give it a generating capacity of almost 22,000 MW. Ontario Power sells wholesale power to utilities (including Hydro One) and businesses in Ontario; it also markets electricity in interconnected Canadian and US markets. It operates 65 hydroelectric, five thermal (fossil fuel), three nuclear, and two wind-power generating stations. In addition, Ontario Power operates co-owned and leased facilities, including two gas-fired combined cycle stations and two nuclear stations.

Sumter Electric Cooperative shines more light across the Sunshine State. Known as SECO, the customer-owned utility distributes electricity to 170,000 homes and businesses across the rural Central Florida region comprised of Citrus, Hernando, Lake, Levy, Marion, Pasco, and Sumter counties. The coop operates 11,350 miles of electric lines and 47 substations. SECO's engineers design electrical facilities for new shopping centers and business parks and perform cost estimates for putting utilities underground in subdivisions. The co-op is a member of and receives generation and transmission services from Seminole Electric Cooperative.

Companhia Paranaense de Energia – Copel engages in the generation, transmission, distribution, and sale of electricity for industrial, residential, commercial, and rural customers primarily in the State of Parana, Brazil. It owns and operates 18 power plants, including 17 hydroelectric power plants and 1 thermal power plant with an installed capacity of 4,550 MW; transmission system comprising 1,913 km of transmission lines and 30 substations; and distribution system, including 180,696 km of distribution lines and 350 substations. The company serves approximately 3,671,262 consumers. It also provides telecommunication and communication services consisting of broadband Internet, private networks IP/MPLS-VPN, videoconference, and hosting services to schools, banks, supermarkets, Internet providers, industries, public bodies, stores, and fixed and mobile telephone operators. In addition, company has 6,026 km of OPGW cables, installed between the main ring and urban radials, totaling 10, 054 km and reaching 226 cities Parana. Further, it distributes piped gas. The company was founded in 1954 and is headquartered in Curitiba, Brazil.

Calpine Corporation, an independent wholesale power generation company, engages in the ownership and operation of natural gas-fired and geothermal power plants in North America. It generates electricity and produces steam from natural gas-fired combustion and renewable geothermal facilities. The company sells wholesale power, steam, capacity, renewable energy credits, and ancillary services to utilities, independent electric system operators, industrial and agricultural companies, retail power providers, municipalities, and power marketers. As of December 31, 2009, the company had a portfolio of 77 operating power plants with an aggregate generation capacity of approximately 24,802 megawatts. Calpine Corporation was founded in 1984 and is based in Houston, Texas.

Touchstone Energy keeps in touch with the energy of its members. The organization is a national alliance of local, consumer-owned electric utility cooperatives providing service to more than 30 million customers through more than 660 affiliated cooperatives in 46 states. Touchstone Energy champions the cause of electric cooperatives nationwide through organizing branding events, media projects, and other public relations activities. The alliance runs television ads on various channels, including CNN, ESPN, TNT, The Weather Channel, TBS, and The Learning Channel. It also places print ads in national magazines and newspapers, including Reader's Digest and other major publications.

Clearford Industries provides water and wastewater management and sewage treatment services throughout North America. For rural areas the company's patented Small Bore Sewer technology obviates the need for a septic tank by using pipes with a narrow diameter -- as opposed to larger ones used in urban systems -- to transport waste from a residence to a wastewater treatment plant. In 2008 the company sold its Brooklin Concrete division, a leading producer of septic tanks in Ontario, to Armtec Limited Partnership.

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