The constraint of carbon emission is promoting the third transition of the world primary energy constitution.Fossil energy would gradually decrease after achieving peak consumption

and nuclear and renewable energy would become the main components.Science and technology innovation will push forward the revolution of terminal utilizing model from primary energy

and result in significant change of petrochemical industry up to 2030.Transportation fuel and chemical raw material will shift from solely oil towards a new

multi-source pattern:oil

coal (electricity) and biomass.This situation calls for dealing with the relationship among macroscopic planning

energy saving and carbon emission reduction

providing great potential

opportunity and challenge for energy system optimization.2012—2030 is the key transition period.Changing traditional idea and thinking

enlarging time and space sight

and emphasizing science and technology progress will guarantee fast development of China's organic chemical industry in the low carbon era.