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.

Rappahannock Electric Cooperative (REC) keeps the power running smoothly. The consumer-owned cooperative provides electricity to homes, businesses, and industries in parts of 16 counties from the Blue Ridge Mountains to the mouth of the Rappahannock River in eastern Virginia. REC supplies power to 102,000 members over more than 12,000 miles of power line. Once rural in nature, the cooperative's territory has seen large pockets of suburban growth. REC offers surge protection, internet services, and home security plans to entice customers as competition from other suppliers arrives.

Porvair wants to reign in pores. The company makes specialist porous filtration products out of ceramics, plastic, metal, and carbon for a variety of industries, including aerospace, aluminum, high-purity liquids, life sciences, and nuclear maintenance. The company's specialist laboratory filter systems are used by pharmaceutical and drug companies for diagnostic and testing kits, medical devices, and pharmaceutical production. Porvair also makes high performance bi-polar planes for fuel-cell manufacturers. The company operates in both the UK and US.

OGE Energy is the holding company for the largest electric utility in Oklahoma, but its largest revenue producer is its energy marketing and natural gas transmission unit, OGE Energy Resources. OGE owns Oklahoma Gas and Electric (OG&E), a public utility with almost 777,000 retail and wholesale customers in Oklahoma (including Oklahoma City) and a bit of western Arkansas. OG&E owns coal- and gas-fired power plants that generate 6,420 MW of capacity. Subsidiary Enogex operates 7,900 miles of natural gas gathering and transportation pipeline. The company also provides physical, asset, financial management services through marketing unit OGE Eenergy Resources.

PNM Resources, Inc. company's primary utility unit, Public Service Company of New Mexico, distributes electricity to nearly 500,000 residential, commercial, and industrial customers in the state. PNM Resources operates power plants with more than 2,700 MW of generating capacity and markets energy to wholesale customers in the western US. Its Texas-New Mexico Power Company (TNMP) unit provides transmission and distribution services at regulated rates to about retail electricity providers that, in turn, provide retail electric service to 230,000 end users. Subsidiary First Choice Power is a retail electric provider operating in Texas and serving 234,000 customers.

Hongkong Electric Holdings Limited, an investment holding company, engages in the generation, transmission, and distribution of electricity to commercial and industrial customers in Hong Kong and internationally. It holds interests in eight coal-fired units, five gas turbine units, two combined cycle units, and one wind turbine. The company also offers engineering consulting services to the electricity supply industry; and engages in advertising and financing activities. It operates in Australia, Thailand, Canada, the United Kingdom, New Zealand, and mainland China. The company was founded in 1889 and is based in Hong Kong, Hong Kong.

PowerVerde (formerly known as Vyrex) has abandoned its quest for a molecular fountain of youth. These days, it's only interested in power. The development-stage biotech company had been researching antioxidants to develop cures for respiratory, cardiovascular, and neurodegenerative diseases, and other conditions related to aging. Unable to continue funding its activities, however, Vyrex executed a reverse merger with PowerVerde, which has designed a power system that generates electricity with zero emissions. The system, created by the company's founders George Konrad and Fred Barker, uses solar-heated water to power an environmentally friendly motor.

Egad, EGAT, that's a lot of juice. The state-owned Electricity Generating Authority of Thailand (EGAT) produces more than 15,000 MW of electricity and buys another 10,600 MW from independent power producers. EGAT not only generates or buys most of the nation's power, it holds a monopoly on transmission to the distributors (Metropolitan Electricity Authority and Provincial Electricity Authority). The utility operates hydroelectric, thermal, and alternative power plants, and provides engineering, maintenance, and other energy-related services. EGAT has also announced plans to expand into telecommunications and natural gas, and to acquire coal mining assets in Indonesia.

Plambeck Neue Energien develops and operates renewable power wind farms in Germany and other European countries. The company has developed 74 wind farms in Germany. Plambeck developed its first wind farm -- Windpark Marschland -- in 1995. The company bought SSP Technology A/S, a maker of light and efficient rotor blades based in Denmark. Plambeck has sold its solar business in order to focus on its wind farm operations. In 2006 the company announced plans to join with Evelop to develop an 80-wind turbine offshore wind farm project, Gode Wind I, in Germany. In 2008 Plambeck established a subsidiary in the US.

North Wind works to keep the air clean, the ground fresh, and the water clear in North America. The environmental consulting firm's services include site assessment, soil and groundwater remediation, geographic information system (GIS) data, hazardous and nonhazardous waste management, and project engineering and construction. North Wind has expanded by buying South Carolina-based Pinnacle Consulting Group, which offers engineering, environmental, and information technology consulting services.

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