The World Energy Scenarios comprise 3 scenarios for the energy sector up to 2060 referred to as Unfinished Symphony, Modern Jazz and Hard Rock. Solar and wind energy account for only 4% of power generation in 2014, but by 2060 it will account for 20% to 39% of power generation. In Unfinished Symphony, strong policy supported by hydro and nuclear capacity additions will allow intermittent renewables to reach 39% of electricity generation by 2060. Large-scale pumped hydro and compressed air storage, battery innovation, and grid integration provide dependable capacity to balance intermittency. Modern Jazz sees intermittent renewables reach 30% of generation enabled by distributed systems, digital technologies, and battery innovation. For both resources (solar and wind), the largest additions will be seen in China, India, Europe, and North America. With less capacity for infrastructure build-out, Hard Rock sees the lowest penetration, with solar and wind generation reaching 20% by 2060.

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