IRENA The Age of Renewable Power Report: renewable generation capacity accounted for 1,828 gigawatts (GW) in 2014, compared to around 1,500 GW of gas-fired power station and 1,880 GW of coal-fired power station globally. The majority of power generation comes from hydropower (1,172 GW), followed by wind power (370 GW), and solar photovoltaics (175 GW). In particular, the share of variable renewable energy from solar photovoltaics and wind power is expected to increase from 3% of annual generation production in 2014 to around 20% by 2030. This development will have profound impacts on how our power systems are operated, managed, financed and governed.

Summary of the report can found here.