In other languages: Čeština Deutsch Français 日本語 한국어 Bahasa Melayu Nederlands Polski Português, Brasil Русский Українська 简体中文

Storage tank

From Official Factorio Wiki
Jump to navigation Jump to search

This article is about the liquid storage container. For the armored combat vehicle, see Tank.

Storage tank.png
Storage tank

Storage tank entity.png


Iron plate.png
Steel plate.png
Storage tank.png

Total raw

Iron plate.png
Steel plate.png

Map color

Fluid storage volume




Stack size




Mining time


Prototype type


Internal name


Required technologies

Fluid handling (research).png

Produced by

Assembling machine 1.png
Assembling machine 2.png
Assembling machine 3.png

Consumed by

Fluid wagon.png

The storage tank is a building that can store up to 25,000 units of a fluid. It is a passive storage — it has no input and no output, depending on pressure to fill it, essentially acting as a large pipe.


Storage tanks will only be filled to the same percentage of capacity as pipes that lead to it. A pipe that carries about 50 water will fill the tank to about 50% of its capacity. Pumps can be used to fill the entire tank from a low pressure source (such as distant pumpjacks).

The storage tank is often used to store raw materials and excess products from oil processing, allowing a refinery to run without interruptions. It can also be connected to the circuit network, sending the fluid contents as a signal to the network.

The fluid inside the storage tank can be destroyed by flushing the storage tank or the whole fluid system in the GUI, or by mining and rebuilding the storage tank. The storage tank can be emptied without destroying the contained fluid by draining it with a pump. Mining a storage tank will send its contents to the next nearest storage tanks, if the fluids match.

Usage as "Energy-tank"

See also: Steam tanks as power storage

Storage tanks can also be used as a replacement for accumulators. If steam consumption by steam engines or turbines changes a lot over a daily cycle (for example due to solar panels or laser turrets), storage tanks can be filled with steam during low power usage and then emptied during heavy load.

A storage tank filled with heat exchanger 500°C steam stores around 2.4GJ; a storage tank filled with boiler 165°C steam stores 750MJ.


  • 1 Storage tank can store 25,000 units of 500ºC steam.
  • 1 Steam turbine can output 5,820kW = 5,820kJ/s using 60 units of 500ºC steam/s.
  • 1 Storage tank can keep 1 steam turbine working at full capacity for 25,000 ∕ 60 ≈ 416.6667s
  • A Storage tank can store up to 25,000 ∕ 60 × 5,820 = 2,425,000kJ using 500ºC steam.

  • 1 Storage tank can store 25,000 units of 165ºC steam.
  • 1 Steam engine can output 900kW = 900kJ/s using 30 units of 165ºC steam/s.
  • 1 Storage tank can keep 1 steam engine working for 25,000 ∕ 30 ≈ 833.3333s
  • A Storage tank can store up to 25,000 ∕ 30 × 900 = 750,000kJ using 165ºC steam.



  • 0.15.0:
    • Multiplied all fluid amounts by 10.
  • 0.13.12:
    • Fluid icon now scales with size of tank.
  • 0.9.1:
    • Now has double capacity and takes longer to mine.

See also