Factorio Forums

I noticed that the furnaces (excluding electric), have an energy consumption.
They stop working automatically once the coal runs dry, not when the power goes out, if you manually insert/remove it in.

So, realistically they should not affect the energy consumption.



Thoughts?

They don't consume electricity. The coal (and wood and solid fuel) have their own energy value though.

There are different types of fuel. https://forums.factorio.com/wiki/index.php?title=Fuel
You can use to warm up water to generate electricity or - like anything with a burner (furnaces, car, train) - use the containing energy directly.

k = 1000
W = J/s
M = 1000000

8MJ / 180 kW = (8000000*J*s) / (180000 J) = 400/9*s = 44.44s

that's the time one coal lasts in a furnance.

Thanks for the update.

Good to know I was the one making the mistake.