AbTech Industries (Private)
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American Superconductor (AMSC)
APX (Private)
Aquacell Technologies (AQUA.OB)
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Ascent Solar Technologies (ASTI)
Aspen Aerogels (Private)
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BeneFuel (Private)
BioMetallix (Private)
BioteQ Environmental Technologies (TSX:BQE)
BrightSource Energy (Private)
Calgon Carbon (CCC)
Capstone Turbine (CPST)
Casella Waste (CWST)
Clean Energy Fuels (CLNE)
CoalTek (Private)
Codon Devices (Private)
Composite Technology (CPTC.OB)
Covanta Energy (CVA)
Deepstream Technologies (Private)
Dust Networks (Private)
Echelon (ELON)
Eka Systems (Private)
Energy Focus (EFOI)
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EnerTech (Private)
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EWA Environmental (Private)
Fat Spaniel Technologies (Private)
First Solar (FSLR)
Flow International (FLOW)
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GreatPoint Energy (Private)
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H2Gen Innovations (Private)
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Headwaters (HW)
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Hexcel (HXL)
Hydrogenics (HYGS)
HydroPoint (Private)
Itron (ITRI)
Jadoo Power (Private)
Konarka Technologies (Private)
Lighting Science Group (LSGP.OB)
Lime-Energy (LMEC.OB)
LSB Industries (LXU)
Maxwell Technologies (MXWL)
MBA Polymers (Private)
Mendel Biotechnology (Private)
Metabolix (MBLX)
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NanoGram (Private)
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Nanosys (Private)
Nevada Geothermal Power Inc. (NGLPF.OB)
New Resource Bank (NWBN.OB)
Nova Biosource Fuels (NBF)
Novazone (Private)
Odersun AG (Private)
Optomec (Private)
Ormat Technologies (ORA)
Pentadyne Power (Private)
Plasco Energy (Private)
Plug Power (PLUG)
PowerSecure International, Inc. (POWR)
Powerspan (Private)
Quantum Technologies (QTWW)
Raser Technologies (RZ)
ReliOn (Private)
Rentech (RTK)
Resin Systems (RSSYF.OB)
Satcon (SATC)
Sensicast (Private)
Serious Materials (Private)
Sierra Geothermal Power Corp. (TSX-V: SRA)
Silver Spring Networks (Private)
SmartSynch (Private)
Solaicx (Private)
Solar Integrated Technologies (LSE:SIT)
Solaria (Private)
Soliant Energy (Private)
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SulphCo, Inc. (SUF)
SunPower (SPWR)
Synthesis Energy Systems (SYMX.PK)
Thorium Power (THPW.OB)
TyraTech (AIM:TYR)
UQM Technologies (UQM)
US Geothermal (UGTH)
Verenium (VRNM)
Virent Energy Systems (Private)
Vulcan Power (Private)
Western GeoPower (WGPWF.OB)
Westport Innovations (TSX:WPT)
WFI Industries (TSX:WFI)
World Waste Technologies (WDWT.OB)
Ze-gen (Private)