Organic Resource Management (formerly National Challenge Systems) has an organic approach to the disposal of waste material across Canada. Providing non-hazardous and organic waste disposal services, Organic Resource Management's services include cleaning catch basins, drains, grease-traps, and sewers; food-waste recycling; and raw material and product destruction. Organic Resource Management serves more than 8,000 commercial, industrial, institutional, and residential customers in British Columbia, Ontario, and Quebec. In 2008 it sold the non-core assets of non-hazardous liquid waste subsidiary A&A Anderson Tank Services to McRae's Environmental Services.

Catalytic Combustion Corporation clears the air -- literally and alliteratively. The company makes systems, processes, and products to help customers eliminate volatile organic compounds (VOCs) and other pollutants in order to meet air-quality standards. Catalytic Combustion's catalysts -- substances that accelerate the rate of chemical reactions -- are used in a host of industries and products, ranging from appliances to graphic arts to nuclear power plants. The company makes catalysts from materials such as ceramics, metal foil, and wire mesh. Catalytic Combustion was founded in 1950.

China Hydroelectric Corporation, through its subsidiaries, engages in the acquisition, ownership, development, and operation of hydroelectric power projects in the People's Republic of China. The company sells electricity to the power grids. It owns 12 operating hydroelectric power projects, as well as has a controlling interest in 1 operating hydroelectric power project in the provinces of Zhejiang, Fujian, Yunnan, and Sichuan. As of December 31, 2009, the company has an installed capacity of 376.6 MW. China Hydroelectric Corporation was founded in 2006 and is headquartered in Beijing, the People's Republic of China.

NorthWestern, once a holding company for several energy-related businesses, is now blowing in one direction only -- providing power and gas through regulated utilites. Through its NorthWestern Energy subsidiary, the company provides electricity and natural gas to about 661,000 customers in Montana, Nebraska, and South Dakota. In Montana it delivers electricity to approximately 335,000 customers in 187 communities and surrounding rural areas, 15 rural electric cooperatives, and in Wyoming to the Yellowstone National Park. NorthWestern delivers gas to 180,100 Montana customers. In Nebraska and South Dakota it sells natural gas to 85,5100 customers.

Vattenfall, which provides power to 4.7 million retail customers in Belgium, Denmark, Finland, Germany, the Netherlands, Poland, Sweden, the UK. The Nordic region's largest utility group has about 33,000 MW of generating capacity in the region from interests in nuclear, hydroelectric, wind, and fossil-fueled power plants; it also markets wholesale energy and operates district heating facilities. State-owned Vattenfall is focusing on its growing its presence across Europe. In 2009 it acquired Belgium-based Nuon (renamed Business Group Benelux) in a $10.9 billion deal, boosting its position as a major European energy group

NSTAR is looking to outshine its rivals through the efficiency of its regulated electric and natural gas sales, distribution, and transmission operations. The utility holding company transmits and distributes electricity to almost 1.2 million homes and businesses through NSTAR Electric and serves some 300,000 natural gas customers in Massachusetts through NSTAR Gas. The company also markets wholesale electricity, and operates liquefied natural gas (LNG) processing and storage facilities. Its NSTAR Communications unit owns about 240 miles of fiber optic network. In 2010 the company agreed to be acquired by Northeast Utilities for about $4.2 billion.

Suffolk County Water Authority provides water services to 375,600 homes and businesses (more than 1.2 million people) in New York's Suffolk County, on the eastern end of Long Island. The water authority's system (the largest water system in the nation operating entirely with groundwater) includes more than 5,500 miles of mains. The authority also runs the largest groundwater testing facility in the US. Suffolk County Water Authority is a public benefit corporation of the state of New York.

CH Energy Group powers New York state's Hudson Valley. Utility subsidiary Central Hudson Gas & Electric provides electricity to about 300,000 electric and 74,000 natural gas customers in eight counties located in Mid-Hudson River Valley, and delivers natural gas and electricity in a 2,600-square-mile service area that runs from New York City in the south, to Albany. Subsidiary CHEC oversees CH Energy Group's nonregulated businesses in the Northeast and Mid-Atlantic, including petroleum product distribution, alternative energy projects, and energy management services.

Ocean Power Technologies (OPT) is all about is the company, with offices in the US and UK, uses a proprietary system called PowerBouy to generate electricity using the mechanical energy produced when offshore waves move the anchored buoys up and down. OPT offers a buoy system that connects to power grids as well as an autonomous one that can be used in remote locations and for tsunami monitoring, oceanographic data collection, and offshore aquaculture. Customers include the US Navy, Spanish power producer Iberdrola, and Spanish energy firm TOTAL. It has a contract with Lockheed Martin to build a large power generation system off the west coast of the US.

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.

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