Energy roadmap backs renewables

Half of the world’s energy needs in 2050 could be met by renewables and improved efficiency, a study claims.

It said alternative energy sources, such as wind and solar, could provide nearly 70% of the world’s electricity and 65% of global heat demand.

Following a “business as usual” scenario would see demand for energy double by 2050, the authors warned.
“By 2050, in our scenario, the majority of fossil fuels will be used in the transport sector.”

This BBC page also contains a download link for a PDF version of the report, Energy Revolution: A Sustainable World Energy Outlook.