Ever steeper wind and solar cost declines will see the two renewable sources “dominate the future of electricity” and attract more than $6 trillion of investments by 2040, says latest research from analysts at Bloomberg New Energy Finance (BNEF).

The latest BNEF New Energy Outlook 2017 sees onshore wind’s levelised cost-of-energy (LCOE) plunging by 47% by 2040, adding to a 30% fall over the last eight years.