Diffusion of energy efficient technologies and CO2 emission reductions in iron and steel sector

sThis paper evaluates CO2 emission reduction potentials and the minimum cost of technological options in the iron and steel sector by regions across the world. Based on an intensive and in-depth survey of current steel producing facilities and energy efficient technologies, we modified a global energy systems model, which we call DNE21+; technologies in the steel sector are explicitly modeled as well as those in the energy supply sector. Two types of targets are studied; the top-down type (550 ppmv stabilization) and the bottom-up type (energy efficiency targets in the steel sector). Their cost-effective technological responses are obtained, and the emissions reduction effects are evaluated for the bottom-up targets.