American Wind Capital

American Wind Capital was formed to purchase long-term cash flows from landowners who receive royalty income from wind and renewable power projects in the U.S.

DynaPump

DynaPump designs and manufactures artificial lift systems for the oil and gas industry.

Environmental Drilling Solutions

Environmental Drilling Solutions is a leader in innovative rig containment vacuums, cuttings, handling, cuttings collection, cuttings drying, solids control, and zero discharge technology.

GeoDigital International

GeoDigital International provides airborne inspection and asset management services for the electric utility and oil and gas pipeline sectors.

GreatPoint Energy

GreatPoint Energy is a developer of a catalytic gasification technology that converts abundant, low-cost feedstocks, such as coal, petroleum coke and biomass, into clean, pipeline-quality natural gas.

groSolar

groSolar is a leading distributor and installer of solar energy systems for both residential and commercial installations in the U.S.

ISE Corporation

ISE Corp designs, develops and manufactures fully integrated hybrid-electric drive systems and components for heavy duty vehicles, including buses, trucks and specialized military vehicles.

LedEngin, Inc.

LedEngin is a solid-state lighting company specializing in high-performance LED lighting components, modules and replacement lamps.

Lehigh Technologies

Lehigh Technologies has a proprietary technology that enables top quality industrial polymers to be reengineered from waste tires and other rubber scrap.

Renewable Energy Group

Renewable Energy Group is a leading U.S. producer and marketer of biodiesel.

Satcon Technology Corporation

Satcon Technology develops and manufactures high quality power systems and power electronics for the renewable energy, grid support and advanced power technology sectors.

Southwest Windpower

Southwest Windpower manufactures small-scale wind turbines, including the Skystream 3.7, the first compact, user-friendly, all-inclusive wind turbine designed to power utility-connected homes and businesses.

TPI Composites

TPI Composites manufactures large composite structures for the wind energy, transportation, and military vehicle markets.

Turbine Air Systems

Turbine Air Systems is a leading provider of packaged modular energy systems for various end-markets, including turbine inlet cooling, combined heat and power, and geothermal.

Wellbore Energy Solutions, LLC

Wellbore Energy Solutions provides proprietary downhole tools and support service for the oil and gas industry – realized.

Xunlight

Xunlight Corporation develops and manufactures low cost, flexible amorphous silicon solar modules.