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PORTFOLIO COMPANIES
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Energy and Energy Technology
Chroma Energy, Inc.
Clean Energy Fuels Corp.
Cymbet Corporation
Distributed Energy Systems Corp.
Evergreen Solar, Inc.
Fisk Electric Company
Nexus Energy Software, Inc.
Northern Power Systems, Inc.
NxtPhase T&D Corporation
Puralube, Inc.
Soft Switching Technologies Corporation
Westport Innovations Inc.
VPG Holdings LLC
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