Enerchina Holdings focuses on offering a variety of energy and public utility services in about 40 cities in China. The company generates electrical power, as well as provides more than 400,000 tons of natural gas every year through Panva Gas Holdings. Panva also offers pipeline network construction, transportation, storage, and wholesale of natural gas. Enerchina Holdings serves more than 3 million customers. The company is researching and developing other clean energy sources, including different uses of coal. Chairman Ou Yaping owns about 52% of Enerchina Holdings.

Northeast Utilities (NU) uses a little Yankee ingenuity (and a number of power generation plants) to keep its customers powered up. The largest utility in New England, NU supplies power to more than 2 million customers in Connecticut, New Hampshire, and Massachusetts through subsidiaries Connecticut Light and Power, Public Service Company of New Hampshire, and Western Massachusetts Electric. The company's power grid encompasses more than 3,100 circuit miles of overhead transmission lines and more than 32,800 pole miles of distribution lines. NU's Yankee Gas utility provides natural gas to 205,000 customers in Connecticut. In 2010 the company offered to buy regional rival NSTAR in for $4.2 billion.

Alpheus Environmental finds answers in a range of environmental-related services: water and wastewater treatment, operations and maintenance, infrastructure management and contracting, waste management and recycling, and technical support. A unit of water utility group AWG (formerly Anglian Water), it offers design, build, and project management services for blue-chip companies in the process industry. Services include installing water, gas, electricity, roads, and sewers on development sites. Customers include TOTAL, Whitbread, and the Derby City Council. Alpheus Environmental manages water management, waste minimization, and recycling sites across the UK.

Wisconsin Energy Corporation company's utilities provide electricity to more than 1.1 million customers and natural gas to more than 1 million customers in eastern and northern Wisconsin and Michigan's Upper Peninsula. It also serves 465 steam customers in downtown Milwaukee. Wisconsin Energy has about 5,500 MW of generating capacity, primarily from coal-fired and nuclear-powered plants. The company's primary utility subsidiaries, Wisconsin Gas and Wisconsin Electric, operate together as We Energies. Other operations include real estate development and renewable energy technology.

Westar Energy wished upon a star, and the answer was -- "focus on power utility resources." Westar Energy has a generating capacity of more than 7,100 MW (mostly from fossil-fueled facilities) and serves about 685,000 electricity customers in Kansas through its utility subsidiaries. Westar Energy supplies power to 368,000 retail customers in central and northeast Kansas, and subsidiary Kansas Gas and Electric (KGE) supplies power to 317,000 retail customers in south-central and southeastern Kansas. The company operates 34,200 miles of transmission and distribution lines. It supplies wholesale electric power to more than 30 cities in Kansas and four electric cooperatives that serve rural areas.

Kissimmee Utility Authority (KUA) is committed to redoubling efforts to serve this Florida city with three double letters in its name. KUA operates the municipal power distribution system serving 62,000 commercial and industrial, and residential customers in Kissimmee and surrounding areas. It also offers its customers internet, telephone, and security services. In addition, the community-owned utility has stakes in some power generation units. The century-old company is used to managing operations in a hurricane prone area. In 2009 the company piloted a 4-day working week option for its employees as a way to bring down costs.

Making money by water, Biwater provides water and wastewater treatment services to a range of customers in more than 90 countries. The company also offers water infrastructure investment, consultancy and operation; water asset management; and project management for water leisure facilities. Its Biwater Leisure unit has installed several Olympic-sized pools for almost 40 years. Its international projects include the design and installation of a wastewater treatment plant in Dubai, and a water distribution system for 4.2 million customers in Malaysia. Biwater also designs and builds desalination plants. Focusing on international growth, in 2010 it sold its UK-based Biwater Services Limited unit to MWH Global.

Energen Corporation, an energy holding company, engages in the acquisition, exploration, development, and production of oil, natural gas, and natural gas liquids in the continental United States. It also involves in the purchase, distribution, and sale of natural gas to residential, commercial, and industrial customers, as well as other end-users of natural gas in central and north Alabama. In addition, the company provides gas transportation services for industrial and commercial customers located on its distribution system. As of December 31, 2009, Energen Corporation had proved oil and gas reserves of 1,547 billion cubic feet equivalent in the San Juan Basin in New Mexico and Colorado, the Permian Basin in west Texas, and the Black Warrior Basin in Alabama. Energen Corporation was founded in 1929 and is headquartered in Birmingham, Alabama.

Companhia de Transmissao de Energia Eletrica Paulista is a true power broker. The company, known as both CTEEP and Transmissao Paulista, delivers power to the state of Sao Paulo. Its 12,140 kilometers of power lines and 100 substations transmit 30% of the electricity consumed in Brazil. Transmissao Paulista also participates in research and development projects with other utilities as well as universities and research centers. The company, which is part of Latin American power player Grupo Empresarial ISA, was formed in 1999 after the restructuring of Brazilian electric utilities that split power generation, transmission, and distribution into separate companies.

Summerleaze has blown through a number of businesses -- aggregates, waste disposal, and renewable energy. The family-owned company, originally in the gravels/aggregates business, branched into using methane gas from the waste disposal landfills to make fuel. After acquiring renewable energy firm Thomas Graveson, it created Summerleaze RE-Generation, which has enough capacity (43 MW) to serve 70,000 houses from sites across the UK. Ennate Technology provides power generation equipment sales, maintenance, and hire services; its Green Hydrogen subsidiary supplies renewable hydrogen and oxygen for clients. Summerleaze also has a biogas unit, Summerleaze AnDigestion.

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