Formerly: geologist with the oil industry. 1978-89, Faculty, Imperial College. 1989-96, Environmental Campaigner, Greenpeace International. 1997, Founder, Solarcentury, currently the UK's largest solar solutions company. Since 1998, Associate Fellow, Environmental Change Unit, Oxford University. 2000, Founding Director, Bank Sarasin's New Energies Invest, the world's first private equity fund for renewable energy. Founder and former Executive Director, VERTIC (the Verification Technology Information Centre); former Member of the Board, Pugwash UK. Former Member, Renewables Advisory Board, UK Government. CNN "Principal Voice". Recipient of awards and honours, including: Award for Advancing Understanding, US Climate Institute; named the UK's most respected green energy boss, The Observer.