Alternative Energy / Green Power Investing Directory - Top Firms

Renewable Energy Investment - Guide to Leading Companies

Acorn Factor (OTC Bulletin Board: ACFN ) specializes in funding and accelerating the growth of emerging ventures that promise meaningful improvements in the economic and environmental efficiency of the energy sector.

Advanced Energy Systems (ASX: AES ) operates a number of renewable power plants in Australia and has installed many systems on an international level. Our company is active in renewable energy power plant design and operation in many countries, and we are working closely with power utilities in Asia, East Asia and the USA delivering a high standard of renewable energy power plant that maximises project benefits.

Alternative Fuel Systems (2004) (CDNX:AFX.V)
AFS (2004) is a Canadian company providing innovative and cost-effective solutions to the growing global problem of harmful exhaust emissions from internal combustion engines. AFS (2004) has commercialized electronic engine management systems enabling internal combustion engines to operate on a variety of fuels. The Company is headquartered in Calgary, Canada and trades on the TSX Venture Exchange under the trading symbol AFX.

Aquentium, Inc. (OTCBB:AQNM) operates as a diversified holding company with interests in food safety, wastewater treatment, low income housing, emergency and disaster relief housing, telecommunications, alternative energy, and recycling. The company, through its subsidiaries, engages in the development and construction of disaster-relief housing model units; and research and development for manufacturing and marketing of solar energy panels.

CECO Environmental Corp. (NasdaqGM:CECE) CECO Environmental Corp. is North America's largest independent air pollution control company. Through its seven subsidiaries -- Busch, CECOaire, CECO Filters, CECO Abatement Systems, kbd/Technic, Kirk & Blum and H. M. White, Inc. -- CECO provides a wide spectrum of air quality services and products including: industrial air filters, environmental maintenance, monitoring and management services, and air quality improvement systems. CECO is a full-service provider to the steel, military, aluminum, automotive, ethanol, aerospace, semiconductor, chemical, cement, metalworking, glass, foundry and virtually all industrial process industries.

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. The company sells electricity to the residential, commercial, and industrial customers. As of December 31, 2005, it served approximately 151,000 customers.

Covanta Holding Corporation (NYSE:CVA) through its subsidiaries, provides waste and energy services in the United States. It develops, owns, and operates infrastructure for the conversion of energy-from-waste, waste disposal, and renewable energy production.

Diversa Corporation (NASDAQ: DVSA) engages in the discovery and development of protein-based products, such as enzymes and antibodies by applying its proprietary genomic technologies. The company focuses its integrated portfolio of technologies on the discovery, evolution, and production of molecules with agricultural, industrial, and chemical applications, such as enzymes, as well as optimized antibodies with pharmaceutical applications. Its primary areas of focus for internal product development comprise alternative fuels, specialty industrial processes, and health and nutrition.

Energy Quest, Inc (OTCBB:EQST ) Energy Quest through its subsidiaries, Syngas International Corp. and Syngas Energy Corp., is an emerging leader in the development and marketing of low-cost alternate fuels worldwide.

Essex Corporation (NASDAQ: KEYW) provides signal processing, image processing, information processing, information assurance, and engineering innovations for the U.S. Government intelligence and defense customers. It provides processing solutions using optical, optoelectronic, and software technology within the five business areas: Signal Processing, Image Processing, Information Processing, Information Assurance, and Engineering Innovations. The company’s Signal Processing solutions include integrated signal processing solutions, advanced optical signal processors, radar signal processors, and communications and networks. Its Image Processing business includes 3-D imaging and geographic information systems. The company’s Information Processing business includes cognitive processing and critical information infrastructure services. Essex Corporation’s Information Assurance business includes information and network security solutions, as well as information warfare. Its Engineering Innovations include embedded systems, and engineering design, development, and deployment.

Ecotality, Inc. (OTCBB:ETLY ) is a technology innovator that leverages global R&D resources to develop and commercialize renewable energy technologies, specifically aimed at addressing today's global energy challenges. Through strategic partnerships, ECOtality applies scientific knowledge and creates proprietary green energy technologies.

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. Its NOx reduction technologies include the NOxOUT, NOxOUT CASCADE, and NOxOUT SCR processes, which reduce NOx emissions in flue gas from boilers, incinerators, furnaces, and other stationary combustion sources. The FUEL CHEM product line uses chemical processes for the control of slagging, fouling, corrosion, and for plume abatement in furnaces and boilers through the addition of chemicals into the fuel or by targeted in-furnace injection. The company distributes its fuel treatment chemicals through direct sales force and agents to industrial and utility power-generation facilities.

Global Environmental Energy Corp (OTCBB: GEECF) is pursuing sales and partnership opportunities using the Biosphere Process™ System, a unique licensed proprietary technology, which supplies energy through an efficient and environmentally safe process. The Biosphere Process™ System, can safely and efficiently processes traditional and non-traditional waste materials into electricity and other beneficial by-products.

Green Environmental Technologies Inc. (TSX: GEI.V)

Headwaters Incorporated (NYSE: HW) through its subsidiaries, provides products, technologies, and services to the energy and construction materials industries in the United States. It operates in three segments: Construction Materials, Coal Combustion Products, and Alternative Energy. Construction Materials segment designs, manufactures, and markets shutters, gable vents, mounting blocks and tools, and architectural manufactured stones. Coal Combustion Products segment markets coal combustion products, such as fly ash and bottom ash to the building products and ready mix concrete industries. Alternative Energy segment develops catalyst technologies to convert coal and heavy oil into liquid fuels, as well as nanocatalyst processes and applications.

HLT Energies (TSX.V:HES) produces, operates and distributes renewable energy as well as renewable energy production equipment harnessing sustainable energy sources. Particularly, HLT harnesses solar thermal energy. With its equipment, HLT utilizes the full potential of these energy sources, hence creating stable energy as well as important and stable revenues.

HTC Purenergy (CDNX: HTC.V) is the commercial business name of Saskatchewan, Canada based HTC Hydrogen Technologies Corp., an energy technology company that is commercializing CO2 capture/storage technologies for Enhanced Oil Recovery (EOR) and is developing and commercializing hydrogen production, and bio-fuel technologies.

International Power Group, Ltd. (OTCBB: IPWG), a provider of solid waste management and renewable energy solutions

Laidlaw Energy Group (OTCPK: LLEG) is engaged in the development of independent power plants that generate electricity from renewable resources. LLEG's mission is to build and manage a profitable portfolio of renewable energy facilities through development, acquisition, conversion of existing facilities and through partnering with manufactures that have significant electric and thermal needs.

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. The company’s facilities consist primarily of baseload, intermediate and peaking power generation facilities, and thermal energy production and energy resource recovery plants. As of December 31, 2005, NRG Energy had interests in a portfolio of 235 operating generation units at 61 power generation plants, with an aggregate generation capacity of approximately 24,580 megawatts.

Plasma Environmental Technologies (TSX:PE.V) Plasma Environmental Technologies Inc. ("PET") is a Canadian public company that develops and markets plasma-based systems for the safe and cost-effective destruction of hazardous and non-hazardous wastes. PET is listed on the TSE Venture Exchange (trading symbol: PE). PET is headquartered in Toronto, Canada.

PetroSun (OTCPK:PSUD) is a diversified energy company specializing in the discovery and development of both traditional fossil fuels and renewable energy resources

PowerShares WilderHill Clean Energy ETF (AMEX: PBW) Seeks to mirror the performance of WilderHill Index (www.Wildershares.com ), which tracks the Clean Energy sector.

QuestAir Technologies Inc. (AIM: QAR; TSX: QAR) is a developer and supplier of proprietary gas purification systems for several large international markets, including existing markets such as oil refining, biogas production and natural gas processing, and emerging markets such as fuel cell power plants and fuel cell vehicle refueling stations.

REG Technologies Inc (CDNX: RRE.V) is testing now a new engine capable of using 6 different types of fuel (including green ethanol) and the efficiency is more than 30% as opposed with a regular engine which is about 4%.

Renewable Energy Resources, Inc., (OTCBB: RENW) is an alternative energy company developing and acquiring technologies that create energy and fuel from previously untapped sources. RENW specializes in renewable sources of alternative fuels as well as its core low flow hydro technology, the Energy Commander Technology.

Royal Dutch Shell plc (NYSE: RDS-B) operates as an energy company worldwide. The company operates in four segments: Exploration and Production, Gas and Power, Oil Products, and Chemicals. Exploration and Production segment engages in the upstream activities of acquiring, exploring, developing, and producing oil and gas. This segment searches for and recovers oil and natural gas primarily in Australia, Brazil, Brunei, Egypt, Malaysia, the Netherlands, Nigeria, Norway, Oman, the United Kingdom, and the United States. Gas and Power segment liquefies and transports natural gas. It also markets and trades natural gas and electricity, and converts natural gas to liquids to provide clean fuels. Oil Products segment refines crude oil into various products, including fuels, lubricants, and petrochemicals; and markets the refined products for domestic, industrial, and transportation use.Chemicals segment produces and sells petrochemicals that are used in the manufacture of plastics, coatings, and detergents to industrial customers. In addition, the company develops renewable sources of energy, including wind and solar power, and hydrogen energy.

Siemens, headquartered in Berlin and Munich, is one of the world’s largest electrical engineering and electronics companies. Siemens provides innovative technologies and comprehensive know-how to benefit customers in 190 countries. Founded more than 150 years ago, the company is active in the areas of Information and Communications, Automation and Control, Power, Transportation, Medical, and Lighting.

Sustainable Energy Technologies Ltd (CDNX: STG.V) develops manufactures and markets advanced power inverters for the renewable energy industry. Power inverters are strategic to the integration of new renewable energy technologies - solar and wind power, fuel cells, and energy storage systems - into the high quality power demands of the modern electrical grid.

Tersus Energy (LSE.MCCE.L) (London) Tersus Energy Plc is building three operating businesses in:
Asian Renewables (TAR); Bioenergy (TBE); Energy Controls (TEC).

World Energy (TSX: XWE) operates leading online exchanges for energy and energy-related products. Our proven approach provides market intelligence, promotes liquidity, and creates price transparency for all market participants, enabling our customers to transact with confidence and to seek the best possible price. To date, the company has transacted over 32 billion kwh of electricity, 500 million kwh of green power and Renewable Energy Certificates (RECs) and one trillion cubic feet of natural gas.

Zoltek Companies Inc. (NASDAQ: ZOLT) through its wholly owned subsidiaries, engages in the manufacture, marketing, and development of carbon fibers for various applications. The company manufactures and sells carbon fibers, which are used as the primary building material in commercial products; filament winding and pultrusion equipment for the production of composite parts; and technical fibers for aircraft brake and other friction applications.

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