A lot of energy is used for heating, heating water is more efficient with fossil fuel than with electricity - because for electricity you have transmission loss.
40% of all global shipping is used for fossil fuels. [1]
10% of the energy in a barrel of crude oil is used to refine it. [2]
I'm not even counting the energy cost of crude oil extraction, pipeline leaks, hauling gasoline, diesel and LPG to its final destination, or the million other places where energy is lost.
1. https://cleantechnica.com/2026/06/16/shipping-freight-energy...
2. https://autoexpert.com.au/posts/the-energy-cost-of-petrol-pr...