It is equivalent to how much (tonne) of coal combustion? (Use the following link to define the energy content of coal).

Heat Values of Various Fuels (Use Hard black coal (Australia & Canada)):

https://www.world-nuclear.org/information-library/facts-and-figures/heat-values-of-various-fuels.aspx

Note: In 2021 Canada used 19 million tonnes of coal for electricity generation!