Shell International Renewables (doing business as Shell Renewables) may be able to turn them into fuel to power homes and vehicles. The company oversees many of the parent Royal Dutch Shell's operations in alternative fuels, was formed in 1997 to commercially explore the global possibilities of new low-carbon power systems. Shell Renewables markets and distributes alternative energies from the sun, the wind, hydrogen (technically an energy carrier rather than energy source), and bio-fuels worldwide. It is researching hydrogen created from natural gas and bio-fuels, made of everything from corn to algae, to replace gasoline in cars.

FERSA Energias Renovables has found being green isn't too difficult. The Spanish holding company invests in and operates companies that produce electricity utilizing such renewable energy resources as wind power, solar energy, and biomass. The company's holdings span the European continent with investments in wind farms in Spain, Estonia, and Italy as well as holdings in Panama, India, and China. Holdings include Eolica el Pedregoso, Elolica de Pino, Parque Eolico Hinojal, Enrilews, and OU Est Wind Power. The company also has holdings in solar power and biomass operations in Spain through Invetem Mediterranea and Gestora Fotovoltaica de Castellon.

Power and Texas come together at the Texas Municipal Power Agency, which provides electricity generation and transmission services to four municipal utilities (Bryan, Denton, Garland, and Greenville). The joint powers agency, which was created in 1975 by its member cities, owns and operates the 462-MW Gibbons Creek power plant and related transmission assets. In the wake of the oil embargo the early 1970s, the Texas Legislature created joint powers agencies that could perform all the duties of utilities except sell power to non-members. Bryan, Denton, Garland, and Greenville then formed the Texas Municipal Power Agency and harnessed locally available lignite to fuel a power generation plant.

OGE Energy is the holding company for the largest electric utility in Oklahoma, but its largest revenue producer is its energy marketing and natural gas transmission unit, OGE Energy Resources. OGE owns Oklahoma Gas and Electric (OG&E), a public utility with almost 777,000 retail and wholesale customers in Oklahoma (including Oklahoma City) and a bit of western Arkansas. OG&E owns coal- and gas-fired power plants that generate 6,420 MW of capacity. Subsidiary Enogex operates 7,900 miles of natural gas gathering and transportation pipeline. The company also provides physical, asset, financial management services through marketing unit OGE Eenergy Resources.

California Water Service Group, through its subsidiaries, provides water utility and other related services in California, Washington, New Mexico, and Hawaii. It engages in the production, purchase, storage, treatment, testing, distribution, and sale of water for domestic, industrial, public, and irrigation uses, as well as for fire protection. The company also provides non-regulated water-related services, including the operation of water and recycled water systems; leasing communication antenna sites on its properties; meter reading and billing services; sewer and refuse billing services; lab services for water quality testing; selling surplus property; and the marketing and billing of third party insurance programs to residential customers. As of December 31, 2009, it served approximately 467,100 customers in 83 communities in California; 15,600 customers in the Tacoma and Olympia areas in Washington; 7,800 water and wastewater customers in the Belen, Los Lunas, and Elephant Butte areas in New Mexico; and 4,200 water and wastewater customers on the islands of Maui and Hawaii. The company was founded in 1926 and is headquartered in San Jose, California.

Siemens Water Technologies Corp. company is a leading producer of water- and wastewater-treatment equipment worldwide. Through its Water and Wastewater Systems and Water Services and Products groups, Siemens Water Technologies provides services to municipal, industrial, and institutional clients. It has more than 200,000 installations on several continents and a portfolio of more than 900 water treatment products and technologies. Among its other services are ion exchange resin recycling and thermal reactivation processes that reduce carbon expenditure. The company is a subsidiary of Siemens Industry.

CHOICE! Energy Services and Texas Energy Services divisions the company provides consulting and price comparison services to retail customers. CHOICE! Energy Services also provides commodity brokerage and consulting services to energy producers and marketers, utilities, banks, and other corporations. Customers include BP and Morgan Stanley. President and CEO Javier Loya formed CHOICE! Energy in 1994.

Cambridge Water distributes water to about 125,000 residential customers and business customers in the greater Cambridge area. Overall, the company serves a population of about 300,000. Cambridge Water maintains some 2,140 km of water mains and 34 storage towers and reservoirs. All the water supplied to customers is pumped from 25 underground sources. About 55% of water billed is charged by meter. The company offers its clients the delivery of emergency bottled water; customers pre-order water that Cambridge Water will deliver in the event of a major incident. The company is controlled by Cheung Kong Infrastructure Holdings.

Sometimes the sunshine state just isn't bright enough, and that's when Florida Power (doing business as Florida Power) really shines. The utility transmits and distributes electricity to 1.6 million customers and oversees more than 10,000 MW of generating capacity from interests in 14 nuclear and coal-, oil-, and gas-fired power plants. Additionally, Florida Power purchases about 20% of the energy it provides. The company is interconnected with 22 municipal power systems and with nine rural electric cooperative systems. Florida Power, a subsidiary of holding company Progress Energy, also sells wholesale power to other utilities and marketers.

Rutherford Electric Membership Corporation provides power to more than 67,000 members located in 10 counties (Burke, Catawba, Caldwell, Cleveland, Gaston, Lincoln, McDowell, Mitchell, Polk and Rutherford) in the Southwestern Piedmont region of North Carolina. The cooperative (which had a membership of only 394 in 1938, but grew rapidly after WWII) owns and maintains about 7,000 miles of power line. Rutherford Electric has total assets of more than $300 million. The cooperative is a member of the Touchstone Energy Cooperatives network.

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