Renewables will rise to dominate worldwide power production by mid-century, reaching as high as nearly 40% of global capacity, but it is “wishful thinking” to believe new energy technologies will save civilization from the mounting threat of climate change, according to a new report from Capgemini that paints a bleak portrait of a future in which the “abandonment of fossil fuels is very unlikely” as population and energy demand continues to grow.

Despite the commitment by some 60 countries, states and provinces to shift to 100% renewable energy in the next 20 years as wind and solar costs fall further, the consultancy’s Future of Energy report found an all-renewables power system would demand “a radical overhaul of infrastructure – including the installation of wind and PV farms at four to five times the per-capita rate of China”, the current pace-setter in renewables capacity build-out.