Low-carbon fuels – think biofuel, hydrogen and electricity – currently comprise a mere 3% of today’s fuel mix. That needs to increase to 35% by 2050 if irreversible climate change is to be avoided, according to the Intergovernmental Panel on Climate Change. The business-led sustainability group BSR, a global nonprofit that counts oil giants Shell, Chevron and ENI among its more than 250 members, is trying to map how such a transition could occur. In January, the organization released its recommendations for transitioning to low-carbon, sustainable fuels in order to prevent global warming from climbing past the critical 2C mark.