Why do you need coal in hot weather?

At present, as an energy product, the main function of coal is not to heat, but to generate electricity. High temperature weather leads to the most basic demand for air conditioning, which increases the social electricity consumption, the load of power plants and the demand for coal. So why do you need coal in high temperature weather, and China is a big coal country. Relatively speaking, coal is the most indispensable fossil fuel in China, so at present, about 7-8% of electricity in China comes from coal-fired power generation. However, with the development and utilization of clean energy, the proportion will decrease, but its main energy supply position is unshakable.