Subnautica 2 Guide

Vehicles & Tools

Hydroelectric Turbine | How to Unlock and Use It | Subnautica 2 Guide

A practical route to unlock the Hydroelectric Turbine and Power Transmitter, including where to find both scan fragments north of the life pod, where to grab the extra data nearby, and how to place the turbine in moving water so you can send power back to your base.

Last updated May 21, 2026

Hydroelectric Turbine connected to a base with Power Transmitters in Subnautica 2
Table of contents
  1. Guide Background
  2. Operation Steps
  3. Step 1: Head north from the life pod
  4. Step 2: Scan the first Hydroelectric Turbine fragment
  5. Step 3: Move right over the hill for the second fragment
  6. Step 4: Collect the nearby unlocks and loot
  7. Step 5: Build the turbine in a water current
  8. Step 6: Link the turbine back to base with Power Transmitters
  9. Important Items
  10. Hydroelectric Turbine Fragments
  11. Power Transmitter
  12. Interior Wall Recipe Card and Data
  13. Crafting Materials
  14. Key Notes and Tips
  15. Tips and Tricks
  16. Summary

Guide Background

The Hydroelectric Turbine becomes available on the way to the old habitat, one of the major story locations north of the life pod. The route starts from the life pod and follows a straight push north until the jellyfish area comes into view.

The main goal here is to scan both Hydroelectric Turbine fragments, pick up the nearby Power Transmitter unlock, and set up external power for your base. You will need habitat building access to place the finished structures afterward.

Operation Steps

Step 1: Head north from the life pod

Leave the life pod and travel directly north. As you start entering the jellyfish area, expect some aggressive fish around the route.

Keep moving past them and continue until you can spot the old habitat below.

Step 2: Scan the first Hydroelectric Turbine fragment

Once the habitat is in sight, descend straight down. The first Hydroelectric Turbine piece is on the seafloor in this area. Scan it before moving on.

Step 3: Move right over the hill for the second fragment

From the first fragment, head to the right. Go over the nearby hill toward the giant jellyfish.

The second fragment is down in that area. Relative to the base, it sits at roughly 400 meters and around 195 degrees, or about 15 degrees off in that direction. Scan this second piece to complete the Hydroelectric Turbine unlock.

Step 4: Collect the nearby unlocks and loot

While you are in the fragment area, check the surroundings for loose loot. There is also an interior wall recipe card, some data, and the Power Transmitter unlock nearby.

Pick these up before leaving so you do not need to retrace the route later.

Step 5: Build the turbine in a water current

After unlocking the blueprint, craft and place the Hydroelectric Turbine through habitat building under exterior facilities.

Do not place it in still water. A turbine set down outside a current will not generate power.

From the base, a nearby current can be found to the southeast, just over the hill. Place the turbine directly inside moving water and build it there. When placed correctly, it rotates and faces with the direction of the current.

Build Power Transmitters and connect them from the turbine back toward your base.

To link them properly, hold the transmitter in hand and make sure it has a clear line of sight to the previous power source or transmitter. Continue placing as many as needed until the chain reaches your base.

A single transmitter can cover a fairly decent gap, around 20 meters or so before the link breaks. In this nearby setup, two or three transmitters are usually enough to carry power back to the roof of the base.

Once the final transmitter is attached to the building, the base starts receiving the extra power flow.

Important Items

Hydroelectric Turbine Fragments

You need to scan two fragments to unlock the Hydroelectric Turbine blueprint. Both are found north of the life pod near the jellyfish zone and the route to the old habitat.

Power Transmitter

The Power Transmitter is found in the same general area as the turbine fragments. It is required to carry power from the turbine back to your base.

Interior Wall Recipe Card and Data

There are extra pickups in the same area, including an interior wall recipe card, some data, and loose loot. These are easy to miss if you only focus on the turbine scans.

Crafting Materials

The Power Transmitter uses titanium and copper.

The Hydroelectric Turbine uses titanium, copper, and silver.

Key Notes and Tips

Hydroelectric Turbines only work in moving water. If the turbine is not inside a current, it will not produce power.

The old habitat route is the easiest landmark for finding the fragment area. Travel north from the life pod, pass the jellyfish, then search downward once the habitat is visible.

Hostile fish appear around the jellyfish section, so do not drift too long in open water while looking for the scans.

Power Transmitters need clear line of sight when you place them. If a link refuses to connect, reposition it rather than forcing a longer gap.

Tips and Tricks

If you are making the trip for the first time, finish every scan and pickup in the fragment area before returning home. The turbine pieces, Power Transmitter, and extra data are close enough to collect in one pass.

When testing a turbine location, watch the model after placement. If it turns and aligns with the current, you have picked a valid spot.

Use the roof or outer edge of the base as your final connection point. This usually makes transmitter placement cleaner than trying to route power through awkward terrain at the last second.

Do not overbuild the transmitter chain. Since each one reaches a decent distance, place one, check the link, then extend only as needed.

Summary

The Hydroelectric Turbine unlock is a short detour on the northbound path to the old habitat. Scan both fragments near the jellyfish area, grab the Power Transmitter and extra loot nearby, then place the turbine in a real water current and chain the power back to base with clear transmitter links.

Related Guides

Hound Guard in an alien ruin area in Subnautica 2
CreaturesMay 21, 2026

How To Bio Scan Hound Guard in Subnautica 2

Head roughly 500 meters from the Lifepod toward the southeast until alien ruins start showing up, then move slightly right of the ruins to find the area marked by a pot-like object. Hound Guards usually patrol here and will attack on sight, so swap to the scanner quickly and start the bio scan once one comes into view.

Player approaching the purple glowing plants near Welcome Home Base to harvest Necrolyte Cysts in Subnautica 2
ResourcesMay 21, 2026

Subnautica 2 Necrolyte Cyst Location Guide — Strong Acid Route

A quick route from the life raft to the Necrolyte Cyst pickup spot near Welcome Home Base, including the ravine entrance, whirlpool path, oxygen stop, and the purple glowing plants where you harvest cysts for Strong Acid.

Player approaching a wreck near the Research Outpost to find the BIOSCANNER scanner upgrade in Subnautica 2
Vehicles & ToolsMay 21, 2026

Where to Find the BIOSCANNER Scanner Upgrade in Subnautica 2

A direct route to the BIOSCANNER scanner upgrade in Subnautica 2, including how to reach the wreck from the Research Outpost, where to enter, what to scan along the way, and the easiest way to get back out.

Player approaching an alien wreck near a tower to find a Feedback Resonator fragment in Subnautica 2
Quests & ProgressionMay 21, 2026

Where to Get the FEEDBACK RESONATOR Upgrade in Subnautica 2

A fast route to both Feedback Resonator fragments, starting from the Life Pod and the Alien Research Base, with the key landmarks, nearby materials, and the crafting step needed before using it on Angel Combs.

Player approaching the hot-water adaptation route in Subnautica 2 near the Angel Comb and Viral Bloom area
Quests & ProgressionMay 21, 2026

How to Unlock Heat Tolerance Adaptation | Swim in Hot Water in Subnautica 2

Heat Tolerance is the adaptation that lets you safely push into hotter parts of Subnautica 2. The route starts from the Life Pod, heads southwest toward the Black Box Wanderer area, and requires the Sonic Resonator to clear multiple Viral Blooms before the Angel Comb can be used.