Abstract
The potential of reducing CO2 emissions in energy supply for non-industrial use were investigated in Tokyo 23 wards area. The projected area was divided into elements (250m×250m), and the suitable electricity and heat supply system for reduction of CO2 emission was selected in each element from the following options, co-generation system, district heating and cooling system using waste heat from solid waste incineration plants and conventional electricity and heat supply system. In case that these systems are assumed to substitute for thermal power generation, CGS was introduced around 5% of elements, and district heating and cooling system was introduced around 3% of elements. In this case, total annual reduction of CO2 emissions was 2.3 Mt-CO2, which corresponds to 7.6% of total CO2 emissions in energy supply for non-industrial use. In case that these systems are assumed to substitute for the average of all power generation systems, CGS was introduced only 1.3% of elements, and total annual reduction was 0.5 Mt-CO2, which corresponds to 2.0% of total CO2 emissions in energy supply for non-industrial use.
