Water Electrolyzer

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Water Electrolyzer
Water Electrolyzer.png
Water Electrolyzer



Tier 2 Machines


This block can be broken with any tool, but a pickaxe is the quickest



The Water Electrolyzer is a new machine added in Galacticraft 3. It uses electricity to transform water into Hydrogen Gas and Oxygen Gas.

It is a Tier 2 Machine so it receives a speed buff when powered with Tier 2 power. It is one of the most energy-intensive machines in Galacticraft.


Water Electrolyzer interface

The Water Electrolyzer accepts water into its water tank in two different ways:

  • from filled Buckets of Water - place the bucket in the input slot, manually or with aid of hoppers.
  • from connected fluid pipes on the water input side (left side, with a blue-ringed pipe connector for water) - note that Galacticraft itself has no fluid pipe or water pump, so these would have to be fluid pipes from another mod.

When powered, the Water Electrolyzer will gradually convert the water in its input tank, into Hydrogen Gas and Oxygen Gas in its output tanks.

Gases can be extracted from the output tanks as follows:

  • using an Oxygen Pipe for the oxygen - output on rear of machine
  • using a Hydrogen Pipe for the hydrogen - output on right of machine
  • or fluid pipes can be connected on the output sides (right and rear sides of the machine) - note that Galacticraft has no fluid pipe, so these would have to be fluid pipes from another mod.

In Galacticraft the Oxygen Gas output is only useful in these two ways:

Using fluid pipes from other mods, the Oxygen Gas can also be piped (like a liquid) into other mods' tanks, but it is of no use to Galacticraft in that form and it doesn't seem like very realistic gameplay to have a water tank filled with oxygen gas. The only possible way to get the Oxygen Gas back from those tanks into Galacticraft would be to use fluid pipes to pipe the gas into the input side of a Gas Liquefier.

The hydrogen can then be supplied to a Methane Synthesizer to make Methane Gas, used to make unlimited rocket fuel.


Face Use Material
Front Main graphic -
Left Pipe input Water
Right Pipe output Hydrogen
Back Pipe output Oxygen
Top Blank -
Bottom Wire input Energy


Use two Water Electrolyzers on one pipe to keep up a steady supply of hydrogen for a Methane Synthesizer.

The oxygen output can be liquefied using the Gas Liquefier or piped to an Oxygen Storage Module.


Heavy Oxygen Tank Oxygen Vent Heavy Oxygen Tank Grid layout Arrow (small).png Gas Liquefier
Oxygen Pipe Fluid Manipulator Oxygen Pipe
Compressed Copper Compressed Bronze Compressed Copper

Data values

Water Electrolyzer has the ID name GalacticraftMars:tile.marsMachineT2, data value 8.