Our Companies

Renewable Energy

  • Gevo

    Biofuels & Biochemicals

Energy Efficiency

  • Metrolight

    Efficient Lighting

  • Wildcat Discovery Technologies

    Energy Storage

  • GreenRoad Technologies

    Transportation

Resource Management

  • DuraTherm

    Sold to Clean Harbors, Inc. in August 2011

  • Quench USA

    Water

  • Seven Seas Water

    Water