Subnautica 2 How to Power Your Base

All Power Sources

Blue bar = incoming power, Red bar = total draw

Source	Output	Best For
Solar Panel	1-8 energy/sec	Shallow bases near surface
Hydroelectric Turbine	12 energy/sec	Bases near currents
Bioreactor	1-20 energy/sec	Any location
Thermal Plant	1-16 energy/sec	Hot biomes

Solar Panels

First and cheapest power source

Detail	Info
Unlock	Available from start
Recipe	Titanium x1, Quartz x2
Output	1-8 energy/sec

Output drops at night, stops past 200m depth.

Hydroelectric Turbines

Best overall — infinite passive energy

Detail	Info
Unlock	Scan 2 fragments
Recipe	Titanium x3, Copper x3, Silver x3
Output	12 energy/sec

Place on underwater currents. Multiple turbines in same current. Requires Power Transmitters.

Bioreactor

Highest output — needs fuel management

Detail	Info
Unlock	Scan 2 fragments
Recipe	Titanium Ingot x2, Copper Ingot x2
Output	10-20 energy/sec

Two modes: Normal (10/sec) and Overdrive (20/sec, burns fuel 2x faster).

Normal vs Overdrive mode

Hold off on burning resources early — need plants/fish for food. Use Growbeds first.

Thermal Plant

Best in hot biomes

Detail	Info
Unlock	Scan 2 fragments
Recipe	Titanium x3, Copper x3, Gold x3
Output	1-16 energy/sec

Place in magma vents. Requires Power Transmitters.

Power Transmitters

Carry power from source to base

Detail	Info
Unlock	Scan 1 fragment
Recipe	Titanium x1, Copper x1

Place in chain from turbine to base exterior.

Power Storage

Stores excess energy for later use

Mounted on interior walls. Surplus energy fills storage when generation > draw. Kicks in during high consumption or Solar Panel nighttime drop.

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The Bottom Line: This is the kind of mechanic that seems obvious after you know it, but the game sure as hell won’t tell you upfront. I learned most of this the hard way — by drowning, starving, or getting eaten. The systems in Subnautica 2 are deep but fair. Once you understand how they work, survival stops being a struggle and starts being a strategy. And that’s when the real fun begins.