Solar could overtake oil as the world’s dominant energy source by 2060 in one scenario envisioned by Royal Dutch Shell.
Renewables could make up as much as 30% to 40% of the global energy mix by 2060, as oil loses its reign as the world’s biggest energy source, the oil giant said in a forecast on the energy sector’s changing landscape.
http://business.financialpost.com/2013/02/28/solar-may-eclipse-oil-in-fifty-years-shell/?__lsa=1836-be8c
