In the announcement of "Toyota environmental challenge 2050", we were committed to continuing toward the year 2050 with plant zero CO2 emissions challenge (challenge 3). Not only do vehicles emit CO2 (carbon dioxide) while traveling, CO2 is also discharged during their manufacture process. Reducing CO2 to restrain climate change is therefore also a challenge for the plants that manufacture automobiles. In our plants, heating processes discharge the greatest percentage of CO2 emissions. It accounts for 30% of plant CO2 emissions. To decrease the amount of it, we are developing heat management system which is consist of “①hydrogen burners which release heat without discharging CO2” and “②a furnace which we are developing for energy saving. Commonly, hydrogen burners discharge a lot of NOx (nitrogen oxide) because of its high flame temperature. But we succeeded to reduce NOx emission much the same as city gas burners by new structure based on two- staged combustion. It decreased flame temperature. Vacuum insulation furnace succeeded to reduce the three key factors of heat dissipation which are convection, radiation and conduction. Also, the insulated wall consisting of vacuum double pipe and, mechanism absorbing heat expansion reduced heat dissipation to nearly 70% of general furnace. This time we report details of these two technologies.