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All hydrogen blocks, with small grid on the left and large grid on the right.

Hydrogen is a fuel used to power Hydrogen Thrusters and the Space Engineers' suit while using their jetpack. Hydrogen is only used with the jetpack, and is not used when (for example) walking or running on a surface with Gravity. Hydrogen can also be used to power the Hydrogen Engine.


Hydrogen power can be used to fuel a Hydrogen Thruster, an engineer's suit, or a Hydrogen Engine for power.

They cannot be used to pressurize a room.

For more information on usage in hydrogen thrusters, see Thruster.


It can be created using the O2/H2 Generator, along with Oxygen from Ice. It's more efficient and faster to produce Hydrogen via Large Block O2/H2 Generator as opposed to small block ones.

Hydrogen energy density (H2 Thrusters) 1556 J/L
Hydrogen energy density (H2 Engine) 10,000 J/L
0.01 MJ/L
10 kJ/L
2.777778e-6 MWh/L
0.00278 kWh/L
2.778 Wh/L

See O2/H2 Generator for conversion rates.


It can be stored in the Hydrogen Tank, Hydrogen Bottles or the Space Engineers' suit. For the purposes of the game units of Hydrogen such as H2 and H are used interchangeably with Liters, even if this doesn't make sense. Therefore 1 H = 1 L of Hydrogen gas.

Large-Grid Large Hydrogen Tank 15,000,000 L
1,500,000 hL
15,000 m³
Large-Grid Small Hydrogen Tank 1,000,000 L
100,000 hL
1,000 m³
Small-Grid Large Hydrogen Tank 500,000 L
50,000 hL
500 m³
Small-Grid Small Hydrogen Tank 15,000 L
1,500 hL
15 m³
Hydrogen Bottle 1,000 L
Internal suit hydrogen tank capacity 125 L

Game version 01.106