Portland General Electric (PGE) keeps many Birkenstock-shod feet warm: The company, formerly a subsidiary of Enron, generates, purchases, and distributes electricity to about 815,750 customers in Oregon. PGE's service territory covers 52 cities, including Portland and Salem. Its hydroelectric, coal-fired, and gas-fired plants had a generating capacity of more than 2,600 MW in 2009, and it purchased another 1,920 MW of generating capacity. PGE also markets wholesale electricity and natural gas to other utilities and marketers in the western US. In keeping with the "green" image of Portland residents, PGE leads the nation in residential customers who purchase power from renewable sources.

Phoenix Natural Gas is the largest gas distribution business in Northern Ireland, being the owner and operator of the licence for the distribution network in the Greater Belfast Area and Larne. The distribution business is responsible for the development of the pipeline network and also for providing a 24/7 operational and transportation service platform to gas suppliers under the rules of the company's network code.The Phoenix network currently extends to 2,940 kilometres of intermediate, medium and low pressure mains, which distribute natural gas throughout the licence area, representing around 50% of the population of Northern Ireland. Phoenix Natural Gas manages the development of the both the physical network and market in Greater Belfast; already some 123,000 customers have been connected to natural gas in the 12 years it has been available to them. The business is regulated under licence by the Northern Ireland Authority for Utility Regulation (NIAUR).

Missouri Gas Energy delivers natural gas in the "Show-Me" state. The utility, an operating unit of national natural gas power player Southern Union, distributes natural gas to more than 500,000 customers in 155 cities and towns located in central and western Missouri. Its territory stretches from St. Joseph in the north to Joplin and neighboring areas in the south, and from the Kansas border east to Ozark (near Springfield). Missouri Gas Energy has facilities in St. Joseph, Lees Summit, Warrensburg, Joplin, Republic, Neosho, and Monett. The Missouri Public Service Commission oversees Missouri Gas Energy's operations.

United Air Specialists has ESP, and the company knows just when to cause static. The company's industrial air pollution control unit makes electrostatic precipitators (ESP) that electrify airborne particles and remove them from the air. United Air Specialists also makes commercial air-cleaning systems, including kitchen emissions systems. In addition, the company makes electrostatic fluid control and high-precision spraying equipment. The company's products are used in offices, hospitals, bars, schools, and industrial settings. United Air Specialists, founded in 1966, is part of the industrial and environmental filtration business unit of manufacturing group CLARCOR.

Geocon Group digs deep to make sure that its client have confidence in its geotechnical, environmental, geologic, material testing, and environmental contracting services. Projects range from geotechnical investigations to hazardous substance corrective action programs. The company operates throughout the western US and in Mexico. Geocon Group has worked on more than 10,000 projects for more than 2,500 clients. Its 11 offices are in California (Bakersfield, Sacramento, San Diego, San Bernadino, Murrieta, Livermore, and Los Angeles), as well as in Portland and Condon, Oregon, and Las Vegas and Carson City, Nevada.

Veolia Environnement holds water -- as well as waste management, energy, and transportation -- operations. The company's Veolia Eau unit, which provides water and wastewater services to more than 80 million people in more than 60 countries, is the world's largest water company, ahead of SUEZ Environnement. Veolia Environmental Services, one of the world's leading waste management companies, serves more than 70 million people a year. Majority-owned energy unit Dalkia (Veolia Energy Services) operates global cogeneration facilities and heating and cooling systems, and Veolia Transport (formerly Connex) is a top European provider of bus, light-rail, and rail transport and operates in about 30 countries.

Brazos Electric is a 3,219 megawatt generation and transmission cooperative whose members' service territory extends across 68 counties from the Texas Panhandle to Houston. Organized in 1941, Brazos Electric was the first cooperative formed in the Lone Star state for the purpose of generating and supplying electrical power. Today, it is the largest generation and transmission cooperative in Texas. Brazos Electric is the wholesale power supplier for its 16 member-owner distribution cooperatives and two municipal systems.

SCANA is cooking with (natural) gas and electricity all over South and North Carolina, and Georgia. The holding company serves 659,000 electricity customers and more than 1 million gas customers in the neighboring states through utilities South Carolina Electric & Gas (SCE&G), Public Service Company of North Carolina, and SCANA Energy (in Georgia). SCANA has an electric generating capacity of about 4,900 MW, derived from fossil-fueled power plants and hydroelectric and nuclear generation facilities. Unregulated operations include retail and wholesale energy marketing and trading, gas transportation, power plant management, fiber-optic telecommunications services, and appliance and HVAC maintenance.

United Pumping Services provides hazardous and nonhazardous waste removal and remediation services. Its fleet of equipment includes truck-mounted pumps for sewer and storm drain cleaning, tankers for hauling liquid waste, and roll-off containers for solid waste. Services include dredging, hazardous material transportation, 24-hour spill response, demolition, above- and below-ground storage tank removal, sewer cleaning, and storm drain maintenance. The company operates primarily in Southern California. United Pumping Services was founded in 1970.

Summerleaze has blown through a number of businesses -- aggregates, waste disposal, and renewable energy. The family-owned company, originally in the gravels/aggregates business, branched into using methane gas from the waste disposal landfills to make fuel. After acquiring renewable energy firm Thomas Graveson, it created Summerleaze RE-Generation, which has enough capacity (43 MW) to serve 70,000 houses from sites across the UK. Ennate Technology provides power generation equipment sales, maintenance, and hire services; its Green Hydrogen subsidiary supplies renewable hydrogen and oxygen for clients. Summerleaze also has a biogas unit, Summerleaze AnDigestion.

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