The world’s Total Primary Energy Supply for 2014 was 13,700 Mtoe, with 14% representing renewable energy sources. Of this percentage, solid biofuels/charcoal represented 66%, making it the largest global renewable energy source. Hydro power represented 18% of renewable sources, with geothermal sources, liquid biofuels, biogases, solar, wind and tide sources accounting for the remainder. Renewable energy sources have been growing steadily at an annual rate of 2.2% since 1990. In total, renewable energy usage has increased at an average annual growth rate of 2.6% for OECD countries, jumping from 271 Mtoe to 510 Mtoe between 1990 and 2015; usage of non-renewable energy sources (i.e., coal, gas, oil and nuclear), however, only increased 0.4% during the same period. Biofuels and waste represent the largest renewable supply sources in OECD countries, accounting for 55%, of which 37% is represented by solid biofuels. In 2014, renewable energy sources contributed 22% of the world’s electricity production, second only to coal, which represented 41% of global electricity production.

Source: International Energy Association