Spurred by ambitious national commitments, international agreements and rapid technological progress, governments are increasingly choosing renewable energy to expand their countries’ power infrastructures. In 2014, renewables provided 23% of power generation worldwide, and with the adoption of more ambitious plans and policies, this could reach 45% by 2030.
Amid this accelerating transition, the variability of solar and wind energy — two key sources for renewable power generation — presents new challenges. It also raises questions, like ‘How do you power a country when the wind isn’t blowing or the sun isn’t shining?’ and ‘How does variable power fit with the delivery of reliable electricity?’
