EcoWater Systems is in a pristine spot. The company manufactures commercial and residential water treatment systems. It sells its products through a network of more than 1,400 dealers, wholesalers, and private-label retailers. Products include water refiners, conditioners, and purifiers, and innovations such as reverse osmosis drinking water systems. Founded in 1925, EcoWater Systems is a member of Berkshire Hathaway's Marmon Group and maintains its autonomous management. In addition to the US, the company operates in Canada, the UK, Europe, and China.

Huntsville, Alabama residents don't have to hunt far to find gas, power, and water. Government's utility City of Huntsville Electric, Natural Gas and Water Systems provides all of these resources. Known as Huntsville Utilities, the company distributes electricity to more than 156.000 residential, commercial, and industrial customers in the city and surrounding areas; it also provides natural gas to 46,200 customers and water services to more than 82,000 customers. Huntsville Utilities buys electricity from the Tennessee Valley Authority. The utility's gas comes from Gulf of Mexico suppliers, and its water is pumped from underground aquifers and the Tennessee River.

The Chugoku Electric Power Co. makes western Japan shine. The company generates, transmits, and distributes electricity to more than 5.2 million customers in the Chugoku region of western Japan. Approximately 89% of its customers are residential, and commercial and industrial customers account for the rest. The company's 110 power plants generate about 11,800 MW; traditional thermal plants generate about 65% of its power. Chugoku Electric intends to increase its use of nuclear power and is also researching alternative energy sources. In response to Japan's electricity market liberalization, the group is entering new business markets, including consulting, construction, fuel supply, and telecommunications.

NOVEC is no novice when it comes to electricity distribution. Northern Virginia Electric Cooperative (NOVEC) is a member-owned utility that serves more than 130,000 residential, commercial, industrial, and government customers in northern Virginia. NOVEC receives its power supply primarily from generation and transmission utility Old Dominion Electric Cooperative. The company also markets natural gas and long-distance phone services to retail customers in Virginia and Maryland through its NOVEC Energy Solutions unit. Subsidiary NOVEC Solutions sells energy appliances. NOVEC was formed in 1983 through the merger of Prince William Electric Cooperative and Tri-County Electric Cooperative.

The lights are big and bright deep in the heart of the Lone Star State thanks to AEP Texas Central (TCC). The utility, formerly named Central Power and Light, provides regulated electric utility services to 766.000 customers in its 100,000 sq. ml. service territory in south and west Texas. TCC operates more than 29,600 miles of transmission and distribution lines in Texas; its transmission assets are managed by ERCOT. In addition to distributing power, AEP Texas also reads electric meters. maintains and repairs power lines, and takes care of connections and disconnections.

Alkane Energy pursues the arcane task of extracting methane gas from abandoned coal mines in the UK and Germany for the dual purposes of direct supply to industrial clients and for on-site power generation. A renewable energy company, Alkane aims to reduce greenhouse gas emissions, through the capturing of coalbed methane and its conversion to energy. The company designs, builds, and services containerized methane treatment plants and electricity generation facilities that use biogas, landfill gas, sewage gas, and coal mine methane. Alskane operates seven biogas-to-electricity sites in the UK and one in Germany.

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.

RainSoft (a division of Aquion Water Treatment Products) wants to clear up the water in your home or office. Through its division, the company makes residential and commercial water treatment equipment. Products include whole-house water conditioning systems, drinking water systems, and filters designed to remove particular contaminants that detract from water's taste and odor. RainSoft's products are distributed through a network of about 300 independent dealers in the US and in 24 countries in Asia, Europe, and the Middle East. Clients have included Allstate , Dow Chemical, Ford Motor, Holiday Inn, and Underwriters Laboratories.

Better PLC, or Better Place as it goes by, wants people to imagine a world free of oil. The startup, which was founded in 2007 on $200 million of venture capital, is teaming with automakers, battery manufacturers, energy companies, and governments to help make electric cars more viable worldwide. As an alternative to traditional gas stations, the company is attempting to build and operate an electric recharge grid to power electric car battery recharging stations, which drivers pay to access (much as phone users pay to access a mobile network). Better Place has begun work with partners in Australia, China, Denmark, Israel, Japan,and the US on this sustainable model. The company was founded by CEO Shai Agassi.

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.

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