As 80% of the world's primary energy, including that of the Asian region, is dependant on fossil fuels, it is essential to address large-scale emission sources to achieve the reduction targets set by the Kyoto Protocol of COP3. Even though promotions such as utilizing renewable energy and energy conservation are important measures for reducing CO₂ emissions, sustained utilization of fossil fuels including coal resources cannot be denied from the viewpoint of efficient use of resources. Furthermore, the implementation of effective actions is the key to achieving efficient use of fossil fuels, benefiting the world and the global environment.