AEA Technology has hitched its wagon to the climate change star, focusing on government and private sector efforts to combat global warming, develop low-carbon processes, and monitor carbon and emissions trading. AEA Technology offers consulting, program management, and emergency response services for commercial, government, and industrial customers. Other areas of expertise include agriculture, health, business innovation, and transport. It is a major provider of advisory services to the UK government on climate change issues and technologies.

Unitil Corporation company serves about 100,500 electric customers and 70,000 natural gas customers. Unitil Energy Systems provides regulated electric utility services to 72,600 customers in New Hampshire, and subsidiary Fitchburg Gas and Electric has some 27,900 power and 15,120 natural gas customers in Massachusetts. Unitil's utility units provide retail supply services to customers who don't choose to purchase energy from a third-party marketer. Indirect subsidiary, Usource LLC, provides energy brokerage service to large energy users throughout the Northeast seeking competitive power or natural gas supplies.

Modesty notwithstanding, Modesto Irrigation District (MID) does much more than irrigate 59,000 acres of land in the Modesto, California area. The state-owned utility also generates, transmits, and distributes electricity to more than 91,270 residential and about 12,700 commercial and industrial customers; markets wholesale power; and treats and provides drinking water to the city of Modesto for distribution purposes. The company is a not-for-profit organization formed by the government of Stanislaus County in 1887 to provide irrigation services in the Modesto region.

South West Water, one of the main subsidiaries of Pennon Group, provides water and wastewater services to 1.6 million people (more during the summer tourism season) in England's South West region. The company's service territory covers nearly 4,300 square miles and includes Devon, Cornwall, and parts of Dorset and Somerset. South West Water maintains more than 9,320 miles of water mains. Because 8 million tourists come to the region annually to swim at its numerous beaches, the utility is responsible for environmental cleanup in the region. It instituted a Clean Sweep program to improve the treatment of coastal sewage and meet European Union guidelines. The utility was privatized in 1989.

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.

Chesapeake Utilities Corporation, through its subsidiaries, operates as a diversified utility company that primarily engages in regulated energy and unregulated energy businesses. The company’s Regulated Energy segment provides natural gas distribution services in Delaware, Maryland, and Florida; and electric distribution services in Florida to residential, commercial, and industrial customers, as well as offers natural gas transmission services primarily to other utilities and industrial customers in Delaware, Maryland, Pennsylvania, and Florida. Its Unregulated Energy segment sells natural gas to commercial and industrial customers in Florida, Delaware, and Maryland; and distributes propane in Delaware, the Eastern Shore of Maryland and Virginia, southeastern Pennsylvania, and Florida.This segment also markets propane to wholesale customers, including independent oil and petrochemical companies, resellers, and propane distribution companies in the southeastern United States. As of December 31, 2009, the company distributed natural gas to approximately 118,000 customers; electricity to approximately 31,000 customers; and propane to approximately to 49,000 customers. It also operated a 384-mile interstate natural gas transmission pipeline. In addition, the company engages in non-energy operations, which include the provision of information-technology-related business services and solutions for enterprise and e-business applications in the United States and internationally. Chesapeake Utilities Corporation was founded in 1859 and is based in Dover, Delaware.

American Labelmark wants to take some of the danger out of hazardous materials. The firm's Labelmaster division sells books, training manuals, and protective equipment (such as steel salvage drums and spill kits) to companies that transport hazardous materials, helping them navigate the maze of government rules. It also makes labels and signage for hazardous materials and infectious waste transportation, along with labels concerning workplace safety and ergonomics. Its Reg-Trieve software division sells compliance materials on compact disks. American Labelmark also offers regulatory information online.

Aquilex speaks softly and carries a big wrench. Through its operating subsidiaries, Aquilex Corporation provides maintenance, repair services and technical support to heavy industry worldwide. Customers include power generation facilities and other industrial plants, including cement, chemical, petrochemical, oil and natural gas processing, pulp and paper, metal refining, and steel manufacturing operations. The company was controlled by private equity firm Harvest Partners (which bought the company from First Reserve in 2007). In 2008 Harvest Partners sold the company to Teachers' Private Capital, the private investment arm of the Ontario Teachers' Pension Plan.

A company so nice they named it twice is doubling its efforts to deliver power. NRG Energy, a leading power producer with a generating capacity of about 24,500 MW (including 345 MW from renewable energy), is moving onward and upward. The vast majority of NRG's power plants are in North America, but it also has one in Australia and one in Germany. The company's global portfolio includes about 190 generation units at 47 power plants. It also markets natural gas, oil, and other commodities, and invests in district heating and cooling and alternative energy projects. Its retail unit, Reliant Energy, distributes power to more than 1.6 million residential, business, commercial, and industrial customers in Texas.

TestAmerica Laboratories (formerly Severn Trent Laboratories) can tell you. It operates about 40 environmental testing laboratories and more than 30 service centers in the US. TestAmerica provides chemical, physical, and biological testing of air, drinking water, tissue, and solid waste. The company has developed technologies to test air for fire retardants, explosives, radiation, and source emissions. Its affiliates include environmental and geotechnical drilling firm TestAmerica Drilling, water sampling equipment and remediation pumping system provider QED Environmental Systems, and air quality analyst EMLab P&K).

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