To develop a scenario sure and easily traceable even for ordinary citizens toward the national challenge target of 80% CO2 reduction by 2050, we first developed a model to calculate the total CO2 emission corresponding to the final consumption and second developed an appropriate technology based scenario consisting of the following consumer oriented sub-scenarios: (1) energy saving through electrification of all transportation, (2) promotion of wood utilization for housing and household energy saving; (3) introduction of renewable energies; and (4) efficient energy utilization of wastes. Applying the scenario to Kyoto that has the similar strategies to our proposed scenarios, we found that about 80% CO2 emission reduction is possible just within the appropriate technology limit with the effect of population reduction and with the potential emission reduction from construction of private and public infrastructures, and that shifting our final consumption mode into low CO2 emission mode has a significant impact.