Nice chart . It demonstrates the issue quite well .
Considering China and particularly India and going to westernize significantly more in the next couple of decades it follows that their emissions are going to increase massively .
So it makes sense to develop low emission technologies in order to offset those gains as China's and India's emissions rise . Already , because of the uptake of renewables around the world in places like Australia , the technology has been fast tracked . To the point where now it has become a genuine industry and companys are finding ways to make money out of it .
Unlike others , I am not going to say that renewables are cheaper than coal at the moment , however I would say that they are now getting very close . Based on the trajectory of the price of renewables and fast improvement of efficiencies , it would be fair to say that renewables will be cheaper than fossil before too long . Fast forward a decade or two and it should be considerably cheaper than fossil , never run out and produce almost no emissions .
Consequently , we are now on a global path to low emission energy production that wouldn't have occurred if we had done nothing . In a decade or two our emissions might be twice or more if we did nothing .
