A new report by multi-stakeholder renewable energy policy network REN21 released this week finds that the majority of global experts on energy are confident that the world can transition to a 100% renewable energy future by the midway point of this century.

However, confidence in the feasibility of this transition wavers from region to region, and there is near-universal belief that sectors such as transport have some catching up to do if their future is to be 100% clean.