Guide Hub

Subnautica 2 Biofuel Block Guide

How to get Biofuel Block in Subnautica 2, where to look, what it is used for, and whether it should be a priority in Early Access.

Biofuel Block quick answer

Biofuel Block is a Material tied to Fabricator, bioreactor prep. Get it when the current recipe, route, or base task needs it; do not fill storage with it before the next craft is clear.

FieldNotes
TypeMaterial
Main location or sourceFabricator, bioreactor prep
How to get itCraft from biological material when power planning needs it.
Main usesBioreactor fuel, base power buffer
PriorityMedium

Location and route

Plan a short route around Fabricator, bioreactor prep. Check oxygen, tool power, food, water, and open inventory slots before leaving. When Biofuel Block is found, return and sort it with related materials so the next recipe is faster to finish.

Uses and crafting value

Use Biofuel Block for bioreactor fuel, base power buffer. If it is part of an electronics or ingot chain, keep some raw ingredients unprocessed until the exact recipe is pinned in-game.

Risk and farming notes

Useful only after base power demand exists. Early Access recipes can change, so verify the current Fabricator, Habitat Builder, or module interface before spending rare materials. In co-op, assign one player to resource calls and one to storage so duplicate runs do not waste oxygen.

What to do next

Use this page with List of All Items, Resource Locations, and Crafting Priorities.

Early Access note

This page is current for the May 20, 2026 Early Access build context and should be rechecked after major patches.