Does thermal energy production cause significant environmental pollution?

There are 7 substances in coal. The main component is carbon, making up about 60-80%. The remaining 6 substances, hydrogen, oxygen, sulfur, nitrogen and water ash, make up about 20-40%. after complete combustion carbon is carbon dioxide, carbon monoxide will also be produced in incomplete combustion. The sulfur content in it produces sulfur dioxide when burned. The emission of sulfur dioxide will cause air pollution, and the production of sulfur dioxide will seriously pollute the environment and produce acid rain which will pollute water sources.