Coal

Japan imports 200 million tonnes per year of coal of which 110 tonnes are consumed for power generation. There is a coal ambiguity: 100 inefficient coal plants (22 giga watt, GW) need to close before 2030, but 11 GW of “high efficient” new coal plants are under construction. The idea of co-burning ammonia and coal (20/80) in order to reduce the CO₂ emissions is not a straight-forward solution, especially in relation to the massive volumes of green ammonia required, which are currently unavailable and in relation to the couple price/CO₂ emissions reduction coming from a 20/80 ratio. The most economical and short term way to enact the energy transition in Japan would be to convert existing coal power plants to another energy source (natural gas emits 50% less CO₂Coal fired power plants can survive in Japan, but they should not run on coal in the future. If Japan’s coal fired power plants were to converted to natural gas, the 46% target carbon reduction would immediately be obtained, way before 2030. The expectations for CCS (Carbon Capture Storage) and H₂/ammonia appear high within the Japanese government but for the moment none of these solutions comes with any proven large-scale deployment in the short term.