Allegheny Energy, Inc. owns and operates electric generation facilities, and delivers electric services to customers in Pennsylvania, West Virginia, Maryland, and Virginia. The company owns or contractually controls coal-, gas-, and oil-fired generation facilities, as well as hydro generation facilities. It operates in two segments, The Merchant Generation and The Regulated Operations. The Merchant Generation segment owns, operates, and manages electric generation facilities, as well as purchases and sells energy and energy-related commodities. This segment markets its electric generation capacity to various customers and markets, including certain of its affiliates, as well as uses both derivative and nonderivative contracts to manage its portfolio of contracts. As of December 31, 2009, it owned or contractually controlled 7,015 megawatts of generation capacity. The Regulated Operations segment operates electric public utility systems that include electricity generation, transmission, and distribution facilities. As of December 31, 2009, it owned or contractually controlled 2,741 megawatts of generation capacity. This segment served approximately 383,600 customers in northern West Virginia; approximately 483,400 customers in portions of West Virginia, Maryland, and Virginia; approximately 102,000 customers in northern Virginia; and approximately 714,900 customers in southwestern, south-central, and northern Pennsylvania. The company is headquartered in Greensburg, Pennsylvania.

Porvair wants to reign in pores. The company makes specialist porous filtration products out of ceramics, plastic, metal, and carbon for a variety of industries, including aerospace, aluminum, high-purity liquids, life sciences, and nuclear maintenance. The company's specialist laboratory filter systems are used by pharmaceutical and drug companies for diagnostic and testing kits, medical devices, and pharmaceutical production. Porvair also makes high performance bi-polar planes for fuel-cell manufacturers. The company operates in both the UK and US.

Massive power resource, Massachusetts Municipal Wholesale Electric Company (MMWEC) provides power supply services to its members -- 23 of the state's 40 municipal utilities (28 utilities are also participants in MMWEC power supply projects). The power supplier has about 715 MW of generating capacity from interests in fossil-fueled and nuclear power plants in the northeastern US, and it negotiates bulk electricity purchases from other generators for its members. MMWEC is the operator and principal owner of the Stony Brook Energy Center, a 520 MW, combined-cycle intermediate and peaking generating station in Ludlow, Massachusetts.

Alpiq (formerly Aare-Tessin Ltd. for Electricity, or Atel) is the largest supplier of electricity in Switzerland. It generates electricity by means of hydro, nuclear, and coal power, then trades and distributes it through its transmission grid across Switzerland and 28 other European countries. Its main markets include Italy, Germany, France, and countries in Central and Eastern Europe. Alpiq has 5,270 MW of generating capacity. The company also provides energy services including engineering, construction, and maintenance. Atel merged with fellow Swiss energy company EOS Holding in 2009 and became Alpiq. EOS owns 31% of the company; French energy giant EDF, 25%.

IBERDROLA RENOVABLES is the leader of wind power in Iberia and the world. The company is the renewable energy arm of Spanish utility giant IBERDROLA S.A. IBERDROLA RENOVABLES has a presence in more than 20 countries across Europe, North America, South America, and Asia. In early 2010 it had an installed generating capacity of 11,000 MW). The company's flexible arrangements with suppliers, and geographic diversification has enabled it to build a total capacity (including developments in the pipeline) of more than 57,400 MW. Besides wind energy, the company invests in small hydroelectric, solar, tidal, biomass and other green energy sources.

Sempra Energy, together with its subsidiaries, engages in the development of energy infrastructure, operation of utilities, and provision of energy-related products and services worldwide. It operates through two divisions, Sempra Utilities and Sempra Global. The Sempra Utilities division includes San Diego Gas & Electric, a regulated public utility that provides electric generation, transmission, and distribution services to 3.5 million consumers, and natural gas distribution services to 3.2 million consumers; and Southern California Gas, a regulated public utility that provides natural gas distribution, transmission and storage services to a population of 20.7 million. The Sempra Global division comprises of Sempra Commodities, a commodities-marketing business operating under the joint venture, RBS Sempra Commodities, with The Royal Bank of Scotland; Sempra Generation, which develops, owns and operates, or holds interest in electric power plants serving wholesale electricity markets in North America; Sempra Pipelines & Storage that develops, owns, operates, or holds interests in natural gas pipelines and storage facilities in the United States and Mexico, as well as in companies that provide natural gas or electric services in Argentina, Chile, Mexico, and Peru; and Sempra LNG, which develops, owns, and operates receipt terminals for importing liquefied natural gas. Sempra Energy was founded in 1998 and is headquartered in San Diego, California.

Canadian Utilities is the strong arm of diversified energy company ATCO and accounts for most of its sales. Canadian Utilities' regulated utilities operations are ATCO Gas, which distributes natural gas to more than 1 million customers in almost 300 communities in Alberta, and ATCO Electric, which provides electricity to about 207,000 customers. ATCO Pipelines provides natural gas transportation services to producers, major industrial users and gas distribution companies in Alberta. Canadian Utilities' Energy unit (including ATCO Power, ATCO Midstream and ATCO Energy Solutions) manages power generation and pipeline activities. The Technologies segment provide business systems solution through ARCO I-Tek.

Suburban Propane Partners, L.P., through its subsidiaries, engages in the retail marketing and distribution of propane, fuel oil, and refined fuels, and the marketing of natural gas and electricity in the United States. The company’s Propane segment involves in the retail distribution of propane to residential, commercial, industrial, and agricultural customers, as well as wholesale distribution to large industrial end users. Its Fuel Oil and Refined Fuels segment engages in the retail distribution of fuel oil, diesel, kerosene, and gasoline to residential and commercial customers for use primarily as a source of heat in homes and buildings. The company’s Natural Gas and Electricity segment markets natural gas and electricity to residential and commercial customers in the deregulated energy markets of New York and Pennsylvania. Suburban Propane Partners, L.P. also sells, installs, and services various whole-house heating products, air cleaners, humidifiers, hearth products, and space heaters to the customers of propane, fuel oil, natural gas, and electricity products. As of September 26, 2009, it served approximately 850,000 residential, commercial, industrial, and agricultural customers through approximately 300 locations in 30 states located primarily in the east and west coast regions of the United States, including Alaska. Suburban Energy Services Group LLC serves as the general partner to Suburban Propane Partners, L.P. Suburban Propane Partners, L.P. was founded in 1945 and is based in Whippany, New Jersey.

San Jose Water, the primary subsidiary of SJW, provides water utility services to approximately 225,000 customers (about 1 million people) in California's Santa Clara County. To obtain its water supply, San Jose Water taps wells and surface sources and buys water from the Santa Clara Valley Water District. It also collects local mountain surface water from the watershed in the Santa Cruz Mountains, which is then treated at San Jose Water's two treatment plants. This local surface water accounts for about 7% of the water utility's total supply. Purchased water accounts for more than 40%.

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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