(CIANEWS) - There were 104 exits of climate technology firms in the transport, energy and agriculture sectors in 2021, four times more than in 2017. The EIP Climate Tech Index of sustainable companies also saw significant growth, rising roughly 200% from 2017 to the end of April 2022, according to investment accelerator Soulmates Ventures, based on data from Sillicon Valley Bank. In 2021, venture investors invested a total of USD 31.4bn in 605 sustainable companies, having invested USD 18.6bn in 510 companies in 2020. Hynek Sochor, founder and chairman of Soulmates Ventures, said one of the most important factors for investors is generating ROI, which climate technologies are doing well when market conditions are good.