Energy transformation refers to the fundamental change in energy production and consumption structure, which profoundly affects a country's socio-economic development and even the global geopolitical pattern. Looking back to the history of the world's energy transformation, there have been two energy transformations so far. One is the transformation from biomass (such as straw and firewood) to coal under the background of the First Industrial Revolution. During the 50 years before ca. 1910, the proportion of coal in the world's total energy structure increased by about 8% every year, and had almost reached 60% by 1910.