The first example that we will mention is the electric furnace.
Factorio electric furnace setup.
For example iron plate has a stack ratio of 2 1 because it takes 200 iron ore 2 stacks of 100.
The compression ratio describes how efficiently a crafted item can be transported compared to its inputs.
However we know that electric furnaces are the same speed as steel furnaces and they are more energy efficient if you are using solid fuels like coal or solid.
Meaning you need 24 12 per side for full saturation of yellow belt 48 24 per side for red belt and 70 35 per side for blue belt.
The electric furnace is the third and last tier of furnace.
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The stack compression ratio is how many stacks of input it takes to create one stack of output.
Once again it is completely seamlessly upgradable.
As its name implies it uses electricity rather than fuel to operate removing the need for a fuel belt.
It occupies a 3 3 area instead of a 2 2 area.
About electric furnaces in factorio.
There are two ratios to consider.
How to build a furnace smelting setup.
Electric furnace endgame if you unlock the substation and the electric furnace in factorio game you are allowed to build space saving setups.
Although players used to produce arrays that could harbor 3 3 electric furnaces in the early days of the game remember that they just as fast as steel furnaces and if you use solid fuel material like coal are also more economical in terms of conserving energy.
Luckily steel and electric furnaces both have the same smelting speed so the ratios will be the same for both and on top of that their speed is exactly double that of a stone furnace so 2 so we can just half all the above numbers.
The stack compression ratio and the belt compression ratio.
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The electric furnace smelts items at the same speed as a steel furnace and also has two slots for modules however it is slightly larger than the other two tiers of furnaces.
This setup will apply many different belts or inserters with electric poles.