Corporates investing in clean-tech often invest in the sector because they believe it is consistent with their core business.

Fabienne Herlaut, managing director of Ecomobilité Ventures, formerly train operator SNCF’s corporate venturing unit, now representing four France-based corporates – SNCF, Total, PSA Peugeot Citroën and Orange – said: "SNCF is one of the major transport companies in the world. Transport makes up about 30% of carbon dioxide emissions. On the contrary, train is a very clean transportation mode, making up less than 1% of total emissions. The initial fund, Ecomobilité Partenaires, fully owned by SNCF, was set up to…