Halving global carbon emissions by 2040 is within reach, but governments, investors and businesses must act now to accelerate the energy transition to a low-carbon, energy-abundant world, says the Energy Transitions Commission (ETC).

The declining costs of wind, solar and batteries will make it possible within 15 years to build power networks that get as much as 90% of their power from renewable sources while providing electricity at a cost that’s competitive with fossil-fuels, according to the ETC, a group of energy companies, investors and non-profit organisations.