Renegy Holdings (formerly Catalytica Energy Systems) was formed in the 2007 merger of Catalytica with the renewable energy divisions of NZ Legacy, a land and energy development firm. Among other ventures, Renegy has built a biomass power generation plant near Snowflake, Arizona, that came online in 2008. The company has long-term power purchasing agreements in place with Arizona Public Service and Salt River Project to buy biomass electricity from the Snowflake White Mountain Power plant. To save costs, in 2009 Renegy delisted its stock from the NASDAQ exchange.

PJM Interconnection, which oversees a 56,350-mile section of the North American power transmission grid that spans across 13 northeastern and midwestern states and the District of Columbia. The regional transmission organization monitors and coordinates the movement of wholesale electricity in its service territory; its more than 560 members have a combined generating capacity of about 164,000 MW. Sanctioned by the Federal Energy Regulatory Commission, PJM is charged with ensuring fair competition among power purchasers, sellers, and traders; it also is responsible for the reliable delivery of distributed electricity to about 51 million consumers in its territory.

Utilities' formula for success is H-2-O. As one of the largest privately owned water and wastewater companies in the US, Utilities owns about 90 subsidiaries that operate more than 500 systems in 15 states, mainly east of the Mississippi. The company serves more than 300,000 customers. About half of the company's revenues come from water services and the other half from wastewater services; residential customers account for approximately 90% of sales. Utilities also provides reuse water for irrigation purposes and for golf courses and car washes. Expanding its coverage, in 2009 the company acquired the sewer collection system assets of Sewerage District No. 6 in Louisiana.

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.

New York Independent System Operator (New York ISO). The company, which replaced the New York Power Pool, manages and monitors wholesale activities on the state's transmission grid, which consists of some 11,000 miles of high-voltage lines. The New York ISO is charged with providing fair access to the state's competitive wholesale power market (37,400 MW of generating capacity), while ensuring the reliable, efficient, and safe delivery of power to New York's more than 19 million residents. The not-for-profit company is governed by a 10-person board of directors.

BKW FMB Energy has been lighting up the lives of the Swiss for more than a century. BKW produces, transmits, and distributes energy to more than 1 million residential and business end users in Switzerland and neighboring countries. The company also trades in energy. BKW operates about 13 hydroelectric plants and one nuclear power plant; it has stakes in another 15 hydroelectric plants, three nuclear power plants, and two plants that generate electricity from wind, solar and biomass sources. The total generating capacity of its plants is 640 MW. The government of the canton of Bern owns more than half of BKW.

Public Utility District No. 1 of Chelan County, Washington (or Chelan County PUD) provides power and water to residents of the county located in the middle of the Evergreen State. The utility operates three hydroelectric-generation facilities on or near the Columbia River that have a combined capacity of about 2,000 MW. About 30% of the district's electricity goes to its more than 47,000 residential, commercial, and industrial customers; the rest is sold wholesale to other utilities operating in the northwestern US. Chelan County PUD also provides water and wastewater services to about 5,700 customers.

Companhia de Saneamento de Minas Gerais provides water supply (for about 12 million people) and sewage treatment services in more than 600 municipalities in the country's state of Minas Gerais. Founded in 1963, COPASA serves customers such as private companies, government agencies, and individuals. The government of Minas Gerais established the company under the name Companhia Mineira de Água e Esgotos in order to enforce the sanitation policy for the state. COPASA receives payment for its services in the form a tariff, which takes into account customers' consumption ranges, as well as inflation.

Trojan Technologies wants to zap you. The company manufactures ultraviolet (UV) lighting systems for disinfecting wastewater and treating contaminated soil and groundwater. Trojan's wastewater treatment systems are used in about 4,000 municipalities in 50-plus countries. The company's UV light systems work by altering the DNA in microorganisms and are an alternative to traditional chlorine-based disinfection systems. Trojan also makes UV products that cleanse water used in industrial processes such as food production and electronics manufacturing. Other products include residential UV systems for drinking water. Danaher controls Trojan.

Tohoku Electric Power Company, Inc. (Tohoku Electric Power) serves nearly five million residences and one million commercial and industrial customers in the Tohoku region, which comprises the seven northernmost prefectures of Japan's main island of Honshu. The region contains 20% of Japan's land and 10% of its population, but accounts for only 6% of its GNP. With its mountainous landscape and heavy winter snow, Tohoku has lagged behind the rest of Japan in terms of industrial development. The region is still largely rural and is known as Japan's furusato or country home. However, the city of Sendai in Miyagi prefecture has boomed in recent years to rival the southern Japanese centers. Tohoku's climate and the inaccessibility of many parts of the region has presented Tohoku Electric Power with special problems.

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