Abstract This article presents the future trend of the Brazilian energy matrix front the immense energy potential of their growing reserves of fossil fuels. This course shift to an energy matrix with more carbon emissions makes necessary the use of mitigation actions among which the Carbon Capture and Geological Storage (CCGS) is the most effective. The paper shows that the risks of CCGS projects are of hybrid origin, a combination of natural and technological hazards, because some of the causes of possible leaks don't depend only on technology operation. This risk management is a technological challenge since there are currently no consolidated technologies commercially available
