Advent Solar | www.adventsolar.com
Advanced photovoltaic (PV) cells designed to reduce the cost of solar energy to a level that makes it cost competitive with centrally generated power.

   
 

Altela | www.altelainc.com
Water remediation technology designed to dramatically reduce the cost of treating contaminated water produced by the oil, natural gas, mineral and power industries.

   
 

Atraverda | www.atraverda.com
Conductive ceramic that enables the production of bipolar batteries that are smaller, lighter and have enhanced electrical performance over conventional technologies.

   
 

Catalytic Solutions (LSE: CTS.L) | www.catsolns.com
Nano-catalyst application technologies that enable production of cheaper, better catalytic converters.

     
  CoaLogix | www.scr-tech.com
Clean coal technology and services provider focused on improving the environmental footprint and efficiency of coal-fired generation plants.
   
 

Clean Air Power (LSE: CAP.L) | www.cleanairpower.com
Alternative fuel systems that allow diesel engines to run on natural gas or diesel and provides significant fuel savings and enhanced environmental compliance.

   
 

Comverge (NASDAQ: COMV) | www.comverge.com
Managed service provider of power plant-scale demand response solutions for utilities trying to reduce the expense of satisfying peak power requirements.

   
 

CURRENT Group | www.currentgroup.com
Managed service provider of power line carrier networks for utility operators and residential broadband customers that delivers lowest cost network access.

   
 

Enerwise Global Technologies | www.enerwise.com
Managed service provider of energy information integration, management and analysis providing customers improved ROA and reduced consumption of energy, water and gas.

   
 

Franklin Fuel Cells | www.franklinfuelcells.com
Developer of enabling materials that allow fuel cells to use every day fuels (gas, diesel, ethanol) improving the cost, operations and adoption curve for fuel cells.

   
 

FuelQuest | www.fuelquest.com
Managed service provider with solutions reducing the cost of the global fuels and lubricants supply chain.

   
 

Intellon (NASDAQ: ITLN) | www.intellon.com
Fabless semiconductor supplier of chips that enable home networking over existing electrical wiring at a fraction of the cost and with higher reliability than wireless.

   
 

Nanomix | www.nano.com
Nano-materials for chemical sensing allowing detection of previously impossible levels of hydrogen and other industrial, medical and environmental chemicals.

   
 

The NanoSteel Company | www.nanosteelco.com
Super-hard steel alloys for more cost-effective welding, hardbanding and coatings in energy, power and industrial industries.

   
 

WellDog | www.welldog.com
Data services manager using a proprietary down-hole sensor platform and data analysis suite to increase the profitability of coalbed methane extraction.

 
 
   
 
 

Arbinet (NASDAQ: ARBX)
Avista Advantage (acquired)
CableMatrix (acquired)
Capstone Turbine (NASDAQ: CPST)
Circadiant Systems
Coastal Security Systems (acquired)
Extant (acquired)
INVIDI Technologies
Orcom Solutions (acquired)
Pac-West Telecomm (NASDAQ: PACW)
Schema
Transportation.com (acquired)
VerticalNet (NASDAQ: VERT)