Factorio Forums

Posted: **Fri Nov 14, 2025 3:02 am**

Assemblers, when powered via fluid, will work at full speed assuming it has some fluid in the tank. The assembler speed is correctly modulated if the fluid temperature provided is too low (the function of which is still blackbox) but lowering the total fluid amount provided does not have the same effect.

see: assembler working at the same speed regardless of how much fuel is provided

Screen Recording 2025-11-13 195648.mp4: (14.6 MiB) Downloaded 19 times

example prototype for testing

Code: Select all

data:extend{{
  type = "assembling-machine",
  name = "bob-steam-assembling-machine",
  icon = util.empty_icon().icon,
  collision_box = { { -1.2, -1.2 }, { 1.2, 1.2 } },
  selection_box = { { -1.5, -1.5 }, { 1.5, 1.5 } },
  graphics_set = data.raw["assembling-machine"]["assembling-machine-1"].graphics_set,
  crafting_categories = { "crafting", "crafting-with-fluid" },
  crafting_speed = 1,
  energy_source = {
    type = "fluid",
    effectivity = 1,
    fluid_box = {
      pipe_connections = {
        { flow_direction = "input-output", direction = defines.direction.east, position = { 1, 0 } },
        { flow_direction = "input-output", direction = defines.direction.west, position = { -1, 0 } },
      },
      production_type = "input-output",
      filter = "steam",
      volume = 100,
    },
    burns_fluid = false,
    scale_fluid_usage = false,
    fluid_usage_per_tick = 1200,
    maximum_temperature = 500,
  },
  energy_usage = "300MW"
}}

Posted: **Thu Nov 20, 2025 5:41 pm**

Thanks for the report however this is working correctly based off the values you've define in the energy source. You specifically set scale_fluid_usage to false and so it's consuming all available fluid (up to the defined per-tick amount), and producing *way* more energy than it actually needs to run.

In base: only 51 units of steam at 500 degrees are needed to run the machine at full speed. Given you've got mods changing the max temperature to 5000, and are producing that temperature steam in the video - I suspect you only need a few units of steam to power the machine.

Posted: **Thu Nov 20, 2025 5:54 pm**

I have a slightly better video I think: https://github.com/protocol-1903/zzz-no ... s/issues/7

The boiler is only capable of producing 1.8MW of steam power, but two machines that consume 10MW a piece work just fine off of it.

Factorio Forums

[2.0.69] Assembler prototype with fluid energy source will work regardless of how much power fluid is available

[2.0.69] Assembler prototype with fluid energy source will work regardless of how much power fluid is available

Re: [2.0.69] Assembler prototype with fluid energy source will work regardless of how much power fluid is available

Re: [2.0.69] Assembler prototype with fluid energy source will work regardless of how much power fluid is available