American Transmission Company is an entrepreneur in the US power grid business. Connecting electricity producers to distributors, American Transmission owns, operates, monitors, and maintains 9,400 miles of high-voltage electric transmission lines and 510 substations in portions of Illinois, Michigan, Minnesota, and Wisconsin. American Transmission is one of the first for-profit transmission companies, formed when the US market deregulated in the early 2000s. The company operates the former transmission assets of some of its shareholders. About 30 utilities, municipalities, municipal electric companies, and electric cooperatives in its service area have an ownership stake in American Transmission.

RPG Enterprises has more than 20 companies that span energy, retail, manufacturing, technology, and entertainment. The company's primary operations include electricity generation and distribution (through CESC Limited and Noida Power) and utility and telecommunications infrastructure development, as well as carbon black production and tire manufacturing. Other operations include supermarkets (Spencer's Hypermarket), retail music and health and beauty stores, software, telecommunications, pharmaceuticals, and music recording businesses. RPG Enterprises is controlled by the Goenka family; the company was formed in 1979 to hold the family's diversified business interests.

PowerVerde (formerly known as Vyrex) has abandoned its quest for a molecular fountain of youth. These days, it's only interested in power. The development-stage biotech company had been researching antioxidants to develop cures for respiratory, cardiovascular, and neurodegenerative diseases, and other conditions related to aging. Unable to continue funding its activities, however, Vyrex executed a reverse merger with PowerVerde, which has designed a power system that generates electricity with zero emissions. The system, created by the company's founders George Konrad and Fred Barker, uses solar-heated water to power an environmentally friendly motor.

EVN spreads energy evenly across its territory in Lower Austria and beyond. The utility -- one of Austria's largest -- provides electricity, natural gas, heat, and related services. Outside its home borders, the company has gained control of electricity suppliers in Bulgaria and Macedonia, as these countries privatized their electricity industry. It is also marketing its environmental services (water, wastewater treatment, and waste incineration activities) around Europe. The company has built drinking water and wastewater treatment plants in Croatia, Poland, and Russia EVN has also put its waste-incineration know-how to good use and has a waste-to-energy plant in Moscow.

Trans-Elect has elected itself as a cross-border power company. The independent transmission company owns and operates about 12,600 miles of high-voltage power lines in portions of Canada and the US. The company acts as a wholesale provider of electricity to distribution companies. It operates the former transmission assets of of US utility Consumers Energy; it is also part of an international consortium that operates the former transmission assets of Canadian power distributor TransAlta. The acquisitions were the first of their kind in the deregulating North American electricity market. Trans-Elect is also involved in several expansion projects in congested areas of the US grid.

Pensacola power users patronize Gulf Power. The regulated utility, a subsidiary of Southern Company, transmits and distributes electricity to more than 428,150 customers in northwestern Florida. Gulf Power generates about 2,660 MW of capacity from its fossil-fueled power plants, and it operates 1,600 miles of transmission lines and about 7,650 miles of distribution lines in its service territory. The utility, which serves 10 counties and more than 70 towns and cities, also provides wholesale electricity to two distributors in Florida, and it offers conservation, outdoor lighting, surge protection, and other energy-related products and services.

Owensboro, Kentucky (named after Abraham Owen, a Shelby County legislator killed in the Battle of Tippecanoe) is served by Owensboro Municipal Utilities, which provides power to almost 26,000 customers and water to 24,500. The city-owned utility operates water treatment facilities and a power plant that uses coal and used tires for fuel. Its operating divisions are Elmer Smith power plant, Engineering & Operations, Water Production, and Customer Service Center. It also offers telecommunications services. Owensboro Municipal Utilities is overseen by the five-member Owensboro Utility Commission, which is appointed by the mayor of Owensboro.

Carbtrol doesn't care about your carbohydrate consumption; instead, the company works to protect the health of the environment. Carbtrol makes activated carbon filters for air and water treatment, along equipment used for groundwater remediation and soil vapor extraction. In addition, the company supplies treatment systems designed to allow golf courses and car washes to recycle water. Carbtrol was founded in 1983. The company's primary product in the early years was activated carbon systems. It expanded its product line to include engineered packages using air stripping, vapor extraction technologies, and ion exchange treatment.

Otter Tail covers a swath of businesses, from electric services and food-ingredient processing to manufacturing equipment, plastics, and health services. Its electric utility and energy activities are subsidiaries of Otter Tail, and its subsidiary Varistar holds Otter Tail's other interests. The electric utility has been the company's core effort since Otter Tail's start in 1907; it keeps the lights on for 129,000-plus residential, commercial, and industrial customers in Minnesota and the Dakotas. Otter Tail also makes PVC pipes, wind towers, metal parts, and processes potato flakes, as well as offers diagnostic medical equipment, and construction and trucking services.

Unitil Corporation company serves about 100,500 electric customers and 70,000 natural gas customers. Unitil Energy Systems provides regulated electric utility services to 72,600 customers in New Hampshire, and subsidiary Fitchburg Gas and Electric has some 27,900 power and 15,120 natural gas customers in Massachusetts. Unitil's utility units provide retail supply services to customers who don't choose to purchase energy from a third-party marketer. Indirect subsidiary, Usource LLC, provides energy brokerage service to large energy users throughout the Northeast seeking competitive power or natural gas supplies.

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