Model analyses for sustainable energy supply under CO/sub 2/ restrictions

This paper aims at clarifying key points for realizing sustainable energy supply under restrictions on CO/sub 2/ emissions. For this purpose, the possibility of 'solar breeding system' is investigated as a key technology for the sustainable energy supply. Then we describe our mathematical model simulating global energy supply and demand in ultra-long term. Depletion of nonrenewable resources and constraints on CO/sub 2/ emissions are taken into consideration in the model. Computed results have shown that existing energy system based on nonrenewable resources shifts to a system based on renewable resources in the ultra-long term with appropriate incentives.