>Energy on the earth The world's geothermal energy reserves are abundant 14.5 X 1025 joules(J),equivalent to approximately 4948 trillion tons (t)of coal National crude coal production in 2019 was 3.97 billion tons Means the total geothermal energy can support China for 106 years Borehole Heat Enhanced Geothermal System Hydrothermal Doublette Exchanger (Hot Dry Rock Technique) GEOTHERMAL Sediment POWER NEIL MOR月5 Sandstone Aquifer GraniteEnergy on the earth 2.0The world's geothermal energy reserves are abundant 14.5 × 1025 joules (J), equivalent to approximately 4948 trillion tons (t) of coal National crude coal production in 2019 was 3.97 billion tons Means the total geothermal energy can support China for 106 years