The IMF recently published this study:

calculating the "subsidies" of the global carbon industry and other environmental pollutions. They pile up to more than 5,3 Trillion each year!

Richard Heinberg here:

states correctly: the word "subsidies" in the title suppses that if we want to act, we simply remove these "subsidies".
The real term for these "costs" is externalised costs but that is a word economists do not want to hear...