Central Vermont Public Service Corp (NYSE: CV)(Cenral Vermont) engages in the purchase, production, transmission, distribution, and sale of electricity in Vermont, the United States. It also invests in wind energy projects in the United States and the United Kingdom; and engages in the sale or rental of electric water heaters to customers in Vermont and New Hampshire.

Modine Manufacturing Company (NYSE: MOD) engages in the development, manufacture, and marketing of thermal management products, components, and systems for use in various original equipment manufacturer applications. Modine products are used in light, medium and heavy-duty vehicles, HVAC (heating, ventilating, air conditioning) equipment, industrial equipment, refrigeration systems, fuel cells, and electronics.

Fuel-Tech N.V. (NASDAQ: FTEK) engages in the air pollution control and specialty chemical businesses. The company primarily focuses on the worldwide marketing and sale of nitrogen oxide (NOx) reduction and FUEL CHEM processes.

Headwaters Incorporated (NYSE: HW) through its subsidiaries, provides products, technologies, and services to the energy and construction materials industries in the United States. The Alternative Energy segment develops catalyst technologies to convert coal and heavy oil into liquid fuels, as well as nanocatalyst processes and applications.

NRG Energy, Inc. (NYSE: NRG) operates as a wholesale power generation company in the United States. It engages in the ownership and operation of power generation facilities, and marketing and trading of energy, capacity, and related products.

Methanex Corporation (NASDAQ: MEOH) engages in the production, marketing, supply, and distribution of methanol. It owns and operates methanol production facilities, as well as sources methanol produced by others.

Ormat Technologies Inc. (NYSE: ORA) operates in the geothermal and recovered energy power business. The company operates in two segments, Electricity and Products. The Electricity segment develops, builds, owns, and operates geothermal power plants, and sells electricity. The Products segment designs, manufactures, and sells power units for geothermal power plants; power units for recovered energy-based power generation; and remote power units and other generators, including fossil fuel powered turbo-generators, as well as heavy duty direct current generators.

Kyocera Corporation (NYSE: KYO), engages in the development, production, and distribution of telecommunications equipment, electronic components, solar energy systems, and industrial ceramics worldwide.