Companhia de Saneamento de Minas Gerais provides water supply (for about 12 million people) and sewage treatment services in more than 600 municipalities in the country's state of Minas Gerais. Founded in 1963, COPASA serves customers such as private companies, government agencies, and individuals. The government of Minas Gerais established the company under the name Companhia Mineira de Água e Esgotos in order to enforce the sanitation policy for the state. COPASA receives payment for its services in the form a tariff, which takes into account customers' consumption ranges, as well as inflation.

New Braunfels Utilities is its namesake city's most powerful entity. The utility provides electric, water, and sewage services to New Braunfels, Texas, and nearby communities. Its electric system serves more than 28,200 customers via 700 miles of overhead and underground distribution lines. New Braunfels Utilities' water and sewer systems serve more than 21,600 water and almost 20,000 wastewater customers. The water system operates six groundwater wells over the Edwards Aquifer, as well as an 8 million gallon per day surface water plant on the Guadalupe River. New Braunfels Utilities' three wastewater treatment plants have a total daily capacity of 8.4 million gallons.

South Staffordshire Water distributes water to more than 1.2 million people in the West Midlands and other areas of central England. The utility gets its water from two main sources, Blithfield Reservoir in the north and Chelmarsh in the south, which together supply approximately 330 megaliters per day. Its water treatment facilities are on the River Severn at Hampton Loade and at a treatment works near Lichfield. The company is the main subsidiary of South Staffordshire Plc. South Staffordshire Water was founded in 1853 by the Earl of Dudley to supply water to residents of Black County.

Ocean Power Technologies (OPT) is all about is the company, with offices in the US and UK, uses a proprietary system called PowerBouy to generate electricity using the mechanical energy produced when offshore waves move the anchored buoys up and down. OPT offers a buoy system that connects to power grids as well as an autonomous one that can be used in remote locations and for tsunami monitoring, oceanographic data collection, and offshore aquaculture. Customers include the US Navy, Spanish power producer Iberdrola, and Spanish energy firm TOTAL. It has a contract with Lockheed Martin to build a large power generation system off the west coast of the US.

Beacon Power Corporation designs, develops, and commercializes advanced products and services to support stable and reliable electricity grid operation in North America. The company primarily focuses on commercializing its patented flywheel energy storage technology for storing and transmitting kinetic energy. It provides Smart Energy Matrix, a non-polluting, megawatt-level, and utility-grade flywheel-based energy storage system that provides sustainable frequency regulation services. The company’s energy storage and power conversion solutions provide electric power for the utility, renewable energy, and distributed generation markets. Beacon Power Corporation was founded in 1997 and is headquartered in Tyngsboro, Massachusetts.

Southern Maryland gets it power via the South Maryland Electric Cooperative (SMECO), which distributes electricity to more than 147,000 residential, commercial, and industrial customers in four counties. One of the ten largest electric cooperatives in the US, the member-owned enterprise gets its wholesale power supply through its membership in ACES Power Marketing. SMECO's service area includes all of Calvert and St. Mary's counties, and parts of of Calvert and Prince George's counties. Cities covered include Hughesville, Leonardtown, Prince Frederick, and White Plains.

Founded in 2001 by partners David Hernandez, Eliezer Hernandez and Alberto Daire, Liberty Power has grown to serve tens of thousands of customers including small and mid–sized businesses, large Fortune 500 accounts, and government entities on a national level.

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.

Southern Nuclear Operating company, a subsidiary of Southern Company since 1990, operates six nuclear power units at three plant locations, which combined, provide about 20% of the electricity used in Alabama and Georgia. Southern Nuclear's Joseph M. Farley Nuclear Plant began commercial operation in 1977. The Edwin I. Hatch Nuclear Plant and the Alvin W. Vogtle Electric Generating Plant are jointly owned by Southern Company's Georgia Power (50%), Oglethorpe Power (30%), the Municipal Electrical Authority of Georgia (18%), and the city of Dalton.

Connecticut Water Service, Inc., through its subsidiaries, operates as a regulated water company in Connecticut. It operates in three segments: Water Activities, Real Estate Transactions, and Services and Rentals. The Water Activities segment supplies drinking water. The Real Estate Transactions segment involves in the sale or donation of its real estate holdings. The Services and Rentals segment provides contracted services to water and wastewater utilities and other clients, which include contract operations of water and wastewater facilities; Linebacker, an optional service line protection program that comprises repairing or replacing leaking or broken water service line, curb box, curb box cover, meter pit, meter pit cover, meter pit valve, and in-home water main shut off valve before the meter; and providing bulk deliveries of emergency drinking water to businesses and residences through tanker trucks. This segment also engages in leasing and renting residential and commercial properties. As of December 31, 2009, Connecticut Water Service, Inc. served 88,534 customers in 54 towns in Connecticut. The company was founded in 1956 and is headquartered in Clinton, Connecticut.

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