CMS Energy Corporation, through its subsidiaries, operates as an energy company primarily in Michigan. It operates in three segments: Electric Utility, Gas Utility, and Enterprises. The Electric Utility segment engages in the generation, purchase, distribution, and sale of electricity. The Gas Utility segment involves in the purchase, transmission, storage, distribution, and sale of natural gas. The Enterprises segment engages in independent power production and marketing. This segment owns power generation facilities fueled mostly by natural gas and biomass. At December 31, 2009, this segment had ownership interests in independent power plants totaling 1,202 gross Megawatt. The company serves individuals and companies operating in the alternative energy, automotive, chemical, metal, food products, and various other industries. As of December 31, 2009, it served 1.8 million electric customers and 1.7 million gas customers. The company was founded in 1987 and is based in Jackson, Michigan.

El Paso Electric Company, a public utility company, engages in the generation, transmission, and distribution of electricity primarily in west Texas and southern New Mexico. It principally operates nuclear, natural gas, and coal power plants, as well as purchases power. The company also operates wind turbines. As of December 31, 2009, it owned 6 electrical generating facilities with a net generating capacity of approximately 1,643 megawatts. The company served approximately 370,000 residential, commercial, industrial, public authority, and wholesale customers. It sells its products to electric utilities and power marketers, as well as to oil, copper refining, and steel production facilities, and the United States military installations. The company was founded in 1901 and is based in El Paso, Texas.

A company so nice they named it twice is doubling its efforts to deliver power. NRG Energy, a leading power producer with a generating capacity of about 24,500 MW (including 345 MW from renewable energy), is moving onward and upward. The vast majority of NRG's power plants are in North America, but it also has one in Australia and one in Germany. The company's global portfolio includes about 190 generation units at 47 power plants. It also markets natural gas, oil, and other commodities, and invests in district heating and cooling and alternative energy projects. Its retail unit, Reliant Energy, distributes power to more than 1.6 million residential, business, commercial, and industrial customers in Texas.

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.

Utilities' formula for success is H-2-O. As one of the largest privately owned water and wastewater companies in the US, Utilities owns about 90 subsidiaries that operate more than 500 systems in 15 states, mainly east of the Mississippi. The company serves more than 300,000 customers. About half of the company's revenues come from water services and the other half from wastewater services; residential customers account for approximately 90% of sales. Utilities also provides reuse water for irrigation purposes and for golf courses and car washes. Expanding its coverage, in 2009 the company acquired the sewer collection system assets of Sewerage District No. 6 in Louisiana.

American Water Works Company, Inc. provides water and wastewater services to residential, commercial, and industrial customers in the United States and Canada. As of December 31, 2009, the company served approximately 16 million people with drinking water, wastewater, and other water-related services in 35 states and two Canadian provinces. It owned approximately 80 surface water treatment plants, 600 groundwater treatment plants, 1,200 groundwater wells, 50 wastewater treatment facilities, 1,200 treated water storage facilities, 1,200 pumping stations and 100 dams, and 49,000 miles of mains and collection pipes. American Water Works Company also enters into public/private partnerships, including operation and maintenance contracts; and design, build, and operate contracts for the provision of services to water and wastewater facilities for municipalities and the United States military. In addition, the company designs, builds, and operates smaller-scale water and wastewater treatment plants for real estate developers, industrial companies, and new or expanding communities; and provides services to domestic homeowners to protect against the cost of repairing broken or leaking pipes inside and outside their homes. Further, it provides granular activated carbon for water purification, and involves in the management and disposal of biosolids and wastewater by-products for municipal and industrial customers. The company was founded in 1886 and is based in Voorhees, New Jersey.

Dee Valley Group, operating through its Dee Valley Water unit, supplies water to more than 106,000 households and 8,250 commercial, industrial, and business customers in North East Wales and Cheshire. Dee Valley Water, formed from the combination of Wrexham Water and Chester Waterworks, supplies water to an 831-sq.-km. area. Dee Valley Water exited its nonwater operations in 2002. The company has been investing in its mains and distribution system to preventage leakage, and in 2005 it completed a 15-year water main rehabilitation program. It also commissioned a water treatment works at Pendinas. Dee Valley Group was created in 1994 as the holding company for Wrexham Water. Axa Sun Life owns 35% of the company.

Guangzhou Development Industry helps keep the lights on in China's Pearl River Delta. Established in 1997, the company is the largest power producer in Guangzhou province, with stake in about 10 coal-fired power plants with 2,100 MW of generating capacity. Guangzhou's energy logistics division operates an 80,000-ton deep-water coal-loading terminal and a 340,000-ton coal storage field. Nansha Oil Terminal, its joint venture with BP, has expanded Guangzhou's oil products distribution services throughout the region. The company is also a shareholder in Guangzhou Northern No. 2 Ring Expressway, a key toll road operating in the Pearl River Delta

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.

Decatur Utilities (the operating name of the Municipal Utilities Board of Decatur) caters to the power, gas, water, and wastewater needs of more than 30,000 residents (including 14,600 gas customers) of the city of Decatur, and Morgan County, in Alabama. In an area that experiences heavy rain, Decatur Utilities spends approximately $1 million each year to repair clay sewer pipe and brick manholes and other aging infrastructure. The Municipal Utilities Board of Decatur was created by the Alabama Legislature in 1939 to provide safe and reliable utility services to the city of Decatur.

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