Doubling the share of clean energy in the global energy mix would create more jobs, save millions of lives, limit global warming and save $4.2 trillion a year, say researchers of the International Renewable Energy Agency. Renewable sources, such as wind and solar, accounted for around 18 percent of global energy consumption in 2014. Under existing national policies, the share of renewables is forecast to reach 21 percent by 2030. Doubling the current share would help achieve a global target to limit the rise in the global average temperature to below 2C above pre-industrial levels, which was agreed at a summit in Paris last year.