Investors
3i (United Kingdom)
Abu Dhabi Future Energy Corp (United Kingdom)
Advent Venture Partners (United Kingdom)
Aloe Private Equity (United Kingdom)
Amadeus Capital Partners (United Kingdom)
Amplio Partners (United Kingdom)
ArcelorMittal (United Kingdom)
August Equity LLP (United Kingdom)
Bank of Scotland Growth Equity (United Kingdom)
BHP Billiton (United Kingdom)
Carbon Connections (United Kingdom)
Catalyst Fund Management & Research Ltd (United Kingdom)
Catapult Venture Managers Ltd (United Kingdom)
Charterhouse Capital Partners LLP (United Kingdom)
Circadia Ventures LLP (United Kingdom)
Climate Change Capital (United Kingdom)
Close Brothers Growth Capital (United Kingdom)
DFJ Esprit LLP (United Kingdom)
Doughty Hanson & Co (United Kingdom)
E.M. Warburg, Pincus & Co. LLC (United Kingdom)
E-Synergy Limited (United Kingdom)
EEA Fund Management (United Kingdom)
Electra Partners LLP (United Kingdom)
Englefield Capital LLP (United Kingdom)
Entrepreneurs Fund General Partner Limited (United Kingdom)
EnviroGene (United Kingdom)
Environmental Technologies Fund (ETF) (United Kingdom)
Foresight Group (United Kingdom)
Foursome Investments Ltd. (United Kingdom)
Future Capital Partners (United Kingdom)
Generation Management (United Kingdom)
Glitnir Total Capital (United Kingdom)
Goldman Sachs Capital Partners (United Kingdom)
Good Energies (United Kingdom)
Green Alliance (United Kingdom)
Greenhill Capital Partners Europe LLP (United Kingdom)
Gresham Private LLP (United Kingdom)
Guinness Atkinson Alternative Energy (United Kingdom)
Hamilton Bradshaw (United Kingdom)
Hazel Capital (United Kingdom)
HgCapital (United Kingdom)
Impax Asset Management Ltd (United Kingdom)
Intel Capital (United Kingdom)
Kohlberg Kravis Roberts & Co Ltd (United Kingdom)
London Asia Capital (United Kingdom)
London Seed Capital (United Kingdom)
Low Carbon Investors Ltd (United Kingdom)
Ludgate Investments Limited (United Kingdom)
Madison Dearborn Partners LLC (United Kingdom)
MMA Renewable Ventures (United Kingdom)
MTI (United Kingdom)
NESTA (United Kingdom)
Next Wave Ventures (United Kingdom)
Nomura Holdings (United Kingdom)
NorthStar Equity Investors Ltd (United Kingdom)
Nviro Cleantech (United Kingdom)
Old Mutual (United Kingdom)
Oxford Capital Partners (United Kingdom)
Platina Finance Limited (United Kingdom)
PUK Ventures (United Kingdom)
Saffron Hill Ventures (United Kingdom)
Scottish Equity Partners Ltd. (United Kingdom)
Shell Foundation (United Kingdom)
Sigma Capital Group (United Kingdom)
Terra Firma Capital Partners Limited (United Kingdom)
Tersus Energy (United Kingdom)
The Blackstone Group (United Kingdom)
The Carbon Trust (United Kingdom)
The Carlyle Group London (United Kingdom)
Virgin Money (United Kingdom)
Warburg Pincus International LLC (United Kingdom)
WestLB Private Equity (United Kingdom)
Wheb Ventures (United Kingdom)
Zouk Ventures Ltd. (United Kingdom)