Wahlco likes to keep it clean. It designs and manufactures air pollution control equipment, specializing in ammonia handling, flue gas conditioning, nitrogen oxide control equipment which it installs at power plants and other industrial facilities, including cement plants, oil and gas refineries, pulp and paper mills, and steel mills. Wahlco also makes products such as low-watt density heaters and specialty thermocouples for industrial applications. The company's systems and equipment can be found in more than 500 locations in more than 17 countries. Wahlco was founded by a small group of experts in 1972.

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.

Nicor Inc., through its subsidiaries, engages in natural gas distribution business in the United States. Nicor Inc. distributes natural gas to approximately 2.2 million residential, commercial, and industrial customers in northern Illinois. It also provides natural gas storage and transmission-related services to marketers and other gas distribution companies. The company’s gas distribution, transmission, and storage network includes approximately 34,000 miles of steel, plastic, and cast iron main; approximately 2.0 million steel, plastic/aluminum composite, plastic, and copper services connecting the mains to customers’ premises; and 8 underground storage fields. In addition, Nicor offers shipping services, including the transportation of containerized freight between Florida, the eastern coast of Canada, the Bahamas, and the Caribbean region. It transports building materials, and food and other necessities for developers, manufacturers, and residents in the Caribbean and the Bahamas; tourist-related shipments intended for use in hotels and resorts, and on cruise ships; and interisland shipments and northbound shipments of apparel and agricultural products, as well as provides inland transportation and cargo insurance services. As of December 31, 2009, the company operated a fleet of 11 owned vessels and 4 chartered vessels with a container capacity totaling approximately 5,270 Twenty-foot equivalent units. Further, it owns and/or leases containers, container-handling equipment, chassis, and other equipment. Additionally, Nicor involves in the marketing of energy-related products and services, including warranty and maintenance contracts, as well as repair and installation services of heating, air conditioning and indoor air-quality equipment, and customer move connection services for other utilities; and wholesale marketing of natural gas supply services. Nicor Inc. was founded in 1953 and is based in Naperville, Illinois.

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.

Touchstone Energy keeps in touch with the energy of its members. The organization is a national alliance of local, consumer-owned electric utility cooperatives providing service to more than 30 million customers through more than 660 affiliated cooperatives in 46 states. Touchstone Energy champions the cause of electric cooperatives nationwide through organizing branding events, media projects, and other public relations activities. The alliance runs television ads on various channels, including CNN, ESPN, TNT, The Weather Channel, TBS, and The Learning Channel. It also places print ads in national magazines and newspapers, including Reader's Digest and other major publications.

Tractebel Engineering (formerly SUEZ-TRACTEBEL) is Belgium's top utility holding company and one of the world's top independent power producers, with operations in more than 100 countries on five continents (through Suez Energy International). As part of the family of companies that make up French energy conglomerate GDF SUEZ, Tractebel Engineering distributes electricity and natural gas; transports and stores gas; is involved in energy trading and marketing; and offers energy and industrial management, infrastructure, and engineering services. GDF SUEZ subsidiary and #1 power producer in Belgium, Electrabel, took ownership of the company in 2007.

Union Gas has a habit of bringing natural gas and energy consumers together. The utility, a subsidiary of midstream maven Spectra Energy transmits and distributes natural gas to more than 1.3 million residential and business customers in more than 400 communities throughout most of the Canadian province of Ontario. It also provides gas transportation and storage services for other utilities and businesses in Canada and the US. Union Gas operates 3,000 miles of transmission pipeline, 37,000 miles of distribution main and service pipeline, and 22 underground storage facilities.

Caithness Corp., which develops wind and other renewable power plants in the US under the Caithness Energy brand. Although the firm has focused on the development, acquisition, operation, and management of geothermal, hydroelectric, wind, and solar energy power projects, it also develops environmentally friendly fossil-fueled plants. Caithness is one of the largest producers of renewable energy in the US, and has developed more than 350 MW of geothermal projects, 160 MW of solar plants, and 440 MW produced by wind turbines. On the cleaner fossil fuel plant side it has also developed more than 2,000 MW of gas-turbine powered capacity.

RPG Enterprises has more than 20 companies that span energy, retail, manufacturing, technology, and entertainment. The company's primary operations include electricity generation and distribution (through CESC Limited and Noida Power) and utility and telecommunications infrastructure development, as well as carbon black production and tire manufacturing. Other operations include supermarkets (Spencer's Hypermarket), retail music and health and beauty stores, software, telecommunications, pharmaceuticals, and music recording businesses. RPG Enterprises is controlled by the Goenka family; the company was formed in 1979 to hold the family's diversified business interests.

First Wind, wind is the first and last item in its business model. The vertically integrated energy company (formerly UPC Wind) develops, owns, and operates wind energy plants in the Northeastern and Western US, and Hawaii. Its six projects in Hawaii, Maine, Vermont, New York, and Utah generate more than 500 MW of electricity. First Wind, which targets states with high energy prices, renewable energy requirements, and favorable wind conditions, plans to have more than 2,000 MW of capacity by the end 2014. The company was formed in 2002 by individuals experienced with building wind power plants in Italy. In 2010 First Wind began construction of its 102 MW Utah-based Milford Wind project.

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