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Biofuel Generator

A large pot that can convert organic matter into fuel.

The Biofuel Generator is an electrical device in Rust that draws 5 rW of power while it runs. It has 1 input and 1 output to connect, and 500 health once placed. You craft it at a Level 1 Workbench, and its blueprint costs 40 scrap to research.

About the Biofuel Generator

Its inventory has 4 slots. Destroyed, it drops what it holds.

Of everything on its raid list, the Satchel Charge costs the least sulfur: 2 of them destroy it for 960 sulfur in all. Without a tool cupboard covering it, it starts to decay after 2 days, then goes from full health to nothing in 4 days outdoors; a repair resets the wait.

On the tech tree it sits behind 4 other unlocks: Animal Fence Gate, Animal Fence, Large Planter Box and Water Bucket.

How much power the Biofuel Generator uses

At full output, one generator runs this many of them at once: 4 on a Large Solar Panel, 6 on a Water Wheel, 8 on a Small Generator and 30 on a Wind Turbine. A fully charged battery keeps one running for 1.3 hours on a Small Rechargeable Battery, 30 hours on a Medium Rechargeable Battery and 3.3 days on a Large Rechargeable Battery.

500HEALTH
2dDECAY DELAY
4dDECAYS IN
5 rWPOWER USE
1POWER INPUTS
1POWER OUTPUTS
100%DROPS LOOT

How to craft the Biofuel Generator

Crafting one takes 15 seconds at a Level 1 Workbench and costs 250 × Metal Fragments and 150 × Wood.

Metal Fragments 250
Wood 150
Biofuel Generator
Output ×1
Workbench Level 1
Craft time
WB1 15s
WB2 −50% 7.5s
WB3 −75% 3.8s

Biofuel processing

Turns food into Low Grade Fuel while it is powered and stirred: one fuel for every 40 calories, one fuel every 36s. A 10s stir is good for 150 fuel.

36s PER FUEL
40 CALORIES PER FUEL
150 FUEL PER STIR
10s STIR TIME
3 INPUT SLOTS

It takes 123 items. The Fuel Inputs tab lists each one with the fuel it makes.

How to get the Biofuel Generator blueprint

Research it for 40 scrap, or unlock it on the Level 1 tech tree for 5 Blueprint Fragments in total.

Research table Burn one copy of the item for its blueprint
Item 1 Item
+
Scrap 40 Scrap
→
Blueprint Blueprint
Research cost 40
Tech tree In the level 1 workbench tree
Node Node
+
Blueprint Fragment 1 Blueprint Fragment
→
Unlocked Unlocked
Total to reach 5

Repair when placed

A damaged Biofuel Generator can be repaired where it stands with a hammer. Repairing it from nothing to full costs:

Hammer Placed repair
×125 ×75

How to repair the Biofuel Generator

A full repair at a Repair Bench costs 51 × Metal Fragments and 31 × Wood, and you need its blueprint.

Repair bench Blueprint required
×51 ×31
Condition lost —

Stats checked against the Rust game files on 13 November 2026.