Tokyo Electric Power Company (TEPCO), which supplies power to a population of 44 million customers in Tokyo, Yokohama, and the rest of the Kanto region. One of the world's largest electric utilities, TEPCO's 190 power plants have the generating capacity of approximately 64,000 MW, primarily produced by thermal, nuclear, and hydroelectric power sources. Through interests in telecom businesses, the company offers telephony and Internet services; it also has international consulting and power generation operations. Other businesses include construction, real estate, and transportation companies. It also invests in independent power producers in other countries.

The utility provides electricity to 490,000 residential, commercial, and industrial customers over nearly 32,000 miles of transmission and distribution lines. Idaho Power holds franchises in 71 cities in Idaho and nine in Oregon. It also owns power plant interests that give it a generating capacity of more than 3,000 MW. In addition, the company, a subsidiary of IDACORP, has a 33% stake in the Bridger Coal Company, which supplies fuel to the Jim Bridger generating plant in Wyoming.Idaho Power lights up spud farms and factories in southern Idaho and eastern Oregon.

Dalkia doesn't balk when it comes to managing its clients' energy needs. The company's services include electricity, water, and natural gas procurement, energy efficiency consulting, electrical and mechanical contracting, building management control, and outsourced facilities maintenance. It installs onsite power generation, HVAC (heating, ventilation, and air conditioning), water treatment, fire protection, and lighting systems. The company serves manufacturers, offices, schools, hospitals, and other businesses. Its Sterience subsidiary sterilizes surgical instruments for hospitals.

AGL Resources Inc., an energy services holding company, distributes natural gas primarily in Florida, Georgia, Maryland, New Jersey, Tennessee, and Virginia. It operates in four segments: Distribution Operations, Retail Energy Operations, Wholesale Services, and Energy Investments. The Distribution Operations segment operates six natural gas distribution utilities that construct, manage, and maintain intrastate natural gas pipelines and distribution facilities. It operates approximately 46,000 miles of underground distribution and transmission mains. The Retail Energy Operations segment markets natural gas and related services under the Georgia Natural Gas name to retail customers on an unregulated basis primarily in Georgia, Ohio, and Florida, as well as to commercial and industrial customers principally in Alabama, Tennessee, North Carolina, South Carolina, and Georgia. The Wholesale Services segment involves in asset management and optimization, storage, transportation, production, and peaking services, as well as engages in wholesale marketing business.The Energy Investments segment develops, acquires, and operates salt-dome and other storage assets in the Gulf Coast region of the United States. It has approximately 7.5 billion cubic feet of liquefied natural gas (LNG) storage capacity in five LNG plants located in Georgia, New Jersey, and Tennessee, as well as owns three propane storage facilities in Virginia and Georgia. AGL Resources Inc. has a joint venture agreement with TECO Energy Inc. to provide home warranty products and services under the brand name UtiliPRO; and with El Paso Corp. to distribute liquefied natural gas (LNG) across the southeastern United States to the heavy-duty transportation market. AGL Resources Inc. was founded in 1856 and is based in Atlanta, Georgia.

WGL Holdings, Inc. engages in the delivery and sale of natural gas, and provides energy-related products and services in the District of Columbia, Maryland, Virginia, and Delaware. WGL Holdings, Inc. operates through three segments: Regulated Utility, Retail Energy-Marketing, and Design-Build Energy Systems. The Regulated Utility segment delivers natural gas to retail customers, as well as sells natural gas to customers who have not elected to purchase natural gas from unregulated third-party marketers. The Retail Energy-Marketing segment sells natural gas and electricity directly to residential, commercial, and industrial customers. As of September 30, 2009, it served approximately 151,000 residential, commercial, and industrial natural gas customers, and 113,000 electricity customers. The Design-Build Energy Systems segment focuses on upgrading the mechanical, electrical, water, and energy-related systems of government and commercial facilities by implementing traditional, as well as alternative energy technologies. WGL Holdings, Inc. was founded in 1848 and is headquartered in Washington, District of Columbia.

Clean water is the goal of H2O Innovation. For amusement parks, campgrounds, cities, schools, zoos, and other enterprises, H2O Innovation uses micro filtration, ultra filtration, nanofiltration, and reverse osmosis to create drinking water, as well as clean water for manufacturing and other purposes. H2O Innovations also treats wastewater, offers equipment for the maple syrup industry, and desalinates seawater and brackish water. In 2007 it became the first North American company to be listed on the Alternext (Euronext) Exchange in Paris. By 2008 the company had installed more than 400 systems in Canada, the US, and elsewhere.

Municipal Electric Authority of Georgia (MEAG Power) supplies wholesale electric power. The authority has a generating capacity of 2,069 MW through its interests in nuclear and fossil-fueled plants. Some 43% of the energy MEAG Power delivers comes from its nuclear plants. MEAG Power transmits electricity to 49 municipal and one county distribution systems across Georgia that in turn serve some 600,000 consumers. MEAG Power utilizes a transmission network that is co-owned by all the power suppliers in Georgia, though it plans to join a regional transmission organization (RTO).

Spice wants to be an essential ingredient in the UK's utility industry. Through its seven business units, the company provides a variety of outsourced infrastructure-related support services, predominately to the utility sector. Its services include billing, consulting, management, engineering, and construction. Spice also offers gas services to commercial and industrial companies; facilities services to retail, commercial, and insurance sectors; and electricity services to several industries. The firm's customers have included utilities such as Yorkshire Water and EDF Energy, as well as British Airways and Siemens.

Xcel Energy has accelerated its energy engine into utility markets across the US. The utility holding company distributes electricity to 3.4 million customers and natural gas to 1.9 million in eight states; Colorado and Minnesota account for the majority of its customers. Its regulated utilities -- Northern States Power, Public Service Company of Colorado, and Southwestern Public Service -- have more than 20,500 MW of primarily fossil-fueled generating capacity. Xcel also has 35,200 miles of natural gas transmission and distribution pipelines. Pushing green energy sources, in 2008 Xcel announced that it would develop solar-generated power plants in Colorado as part of its green energy initiative.

Powerco is the second-largest distributor of electricity and gas in New Zealand (behind state-owned Genesis Energy). Powerco's network extends across the upper central and lower central North Island and services to 415,000 customers. Its infrastructure represents about 46% of the gas connections and 16% of the electricity connections in New Zealand. The company's Powerco Transmission Services unit is a leading provider of wind farm connections to New Zealand's national grid. Powerco is 58%-owned by investment firm Queensland Investment Corp. and 42% by Australia-based infrastructure group Babcock & Brown Infrastructure.

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