Video walkthrough
Watch the route, then follow the written steps
Video chapters
Video references
Watch or inspect the route before you dive
Click YouTube cards to load the player. Open frame cards to compare local screenshot notes. Use the evidence to confirm landmarks, movement, and encounter pacing, then follow the written checklist below.
Thermal Plant and power fragment route context
Watch for: Power fragment planning, hot-zone awareness, blueprint progress, and base energy decisions.
Power room frame review
Watch for: Start with Power route guide / Thermal Plant fragments at 07:24. Compare the screenshot cue, route note, and player action before following the guide in-game.
Energy device frame review
Watch for: Start with Power route guide / Thermal Plant fragments at 02:28. Compare the screenshot cue, route note, and player action before following the guide in-game.
Video watch notes
What to pause, compare, and write down
Do not watch the video like entertainment only. Use these notes as a second-screen checklist: pause on landmarks, confirm the player action, then return to the written route.
Watchlist
Pause on Hot route entry and identify the landmark, depth band, or objective state before following the next step.
Use Power room to confirm what changed; if the video only shows a close-up, rebuild the route from the previous landmark.
Treat Energy device as the exit rule: finish the objective, return, and update storage or crafting before adding side goals.
Hot route entry
Thermal power routes should begin with heat and return-route awareness.
Action: Confirm that base power is the current blocker before chasing fragments.
Power room
A power room frame helps connect the blueprint unlock to an actual base-energy job.
Action: Enter the fragment band with oxygen and heat safety in mind.
Energy device
Energy devices are useful only when they solve a base power problem.
Action: Scan each fragment and check blueprint progress immediately.
Video route timeline
Turn the video into playable checkpoints
Use this section like a second-screen route sheet. Open each checkpoint, compare the frame, do the action, then stop if your route no longer matches the video evidence. It keeps the guide useful even when Early Access shifts small placements or creature behavior.
04:19Checkpoint 1: Confirm that base power is the current blocker before chasing fragments.Thermal power routes should begin with heat and return-route awareness.Expand
Hot route entry
Thermal power routes should begin with heat and return-route awareness.
Player action
Confirm that base power is the current blocker before chasing fragments.
Proof before moving on
Thermal power routes should begin with heat and return-route awareness.
Watch this timestampIf this fails
Reset to the last confirmed landmark or objective state, then repeat only the route-critical step.
07:24Checkpoint 2: Enter the fragment band with oxygen and heat safety in mind.A power room frame helps connect the blueprint unlock to an actual base-energy job.Expand
Power room
A power room frame helps connect the blueprint unlock to an actual base-energy job.
Player action
Enter the fragment band with oxygen and heat safety in mind.
Proof before moving on
A power room frame helps connect the blueprint unlock to an actual base-energy job.
Watch this timestampIf this fails
Use the video frame as evidence, but record entry, proof, and exit as separate notes.
02:28Checkpoint 3: Scan each fragment and check blueprint progress immediately.Energy devices are useful only when they solve a base power problem.Expand
Energy device
Energy devices are useful only when they solve a base power problem.
Player action
Scan each fragment and check blueprint progress immediately.
Proof before moving on
Energy devices are useful only when they solve a base power problem.
Watch this timestampIf this fails
Return, craft, sort storage, or retest the route before turning this page into a longer objective chain.
04:19Checkpoint 4: Return once the blueprint is complete and test the build near a stable heat source.Thermal power routes should begin with heat and return-route awareness.Expand
Hot route entry
Thermal power routes should begin with heat and return-route awareness.
Player action
Return once the blueprint is complete and test the build near a stable heat source.
Proof before moving on
Thermal power routes should begin with heat and return-route awareness.
Watch this timestampIf this fails
Reset to the last confirmed landmark or objective state, then repeat only the route-critical step.
Gameplay evidence
Screenshots to match before you keep swimming
Use these frames as visual checkpoints. If the terrain, lighting, or landmark does not match, slow down and re-check the route instead of forcing the next step.
Hot route entry
Thermal power routes should begin with heat and return-route awareness.
Power room
A power room frame helps connect the blueprint unlock to an actual base-energy job.
Energy device
Energy devices are useful only when they solve a base power problem.
Route decision lab
Decide if this route is worth running now
This section turns the video into a practical in-game decision. Use it before leaving base, after the first landmark, and again before entering a deeper or darker area.
Route purpose
Unlock Thermal Plant fragments when your base power plan needs a stable source. Scan confirmed fragments, check blueprint progress, and avoid hot-zone overextension before the build route is ready.
Visual checkpoint
Thermal power routes should begin with heat and return-route awareness.
Map anchor
Thermal Plant Fragment Band in Hot-zone power route. Use it for use this when base power has become the blocker and a thermal route would solve a real site problem.
Abort rule
Hunting Thermal Plant fragments before the base needs that power tier.
Field manual translation
Unlock Thermal Plant fragments when your base power plan needs a stable source. Scan confirmed fragments, check blueprint progress, and avoid hot-zone overextension before the build route is ready. Use this completion route manual as a second-screen checklist: identify the entry condition, confirm the objective with a visual proof point, then stop when the return rule is met. This keeps the article practical for Early Access patches without pretending every coordinate or state is final.
Primary job
Thermal Plant - Confirm that base power is the current blocker before chasing fragments.
Best entry habit
Scanner - Enter the fragment band with oxygen and heat safety in mind.
Stop condition
Hunting Thermal Plant fragments before the base needs that power tier. - Scan each fragment and check blueprint progress immediately.
Patch-safe reading
Exact item positions can shift during Early Access. The useful part of this page is the route logic: what to prepare, what visual cue to confirm, what objective to finish, and when to turn back.
Updated
2026-06-12 / tracking / Early Access
What this guide covers
Requirements
- Scanner
- Heat route awareness
- Base power plan
Use this if
You want a route you can follow from video evidence without needing exact official coordinates. The screenshots and steps are written to help you recognize areas, landmarks, and decisions while playing.
Early Access can move details. Treat this as a video-based walkthrough and verify landmarks in your own build.
Step-by-step walkthrough
Follow the video route without guessing
Confirm that base power is the current blocker before chasing fragments.
Use this step as a route checkpoint, not as a promise that every object spawns in one exact coordinate. Match the landmark, compare the screenshot, then continue only if the return path is still clear.
If your game build looks different, stay with the same decision: keep oxygen safe, scan or collect the current blocker, and return before pushing into the next unknown area.
Thermal power routes should begin with heat and return-route awareness.
Enter the fragment band with oxygen and heat safety in mind.
Use this step as a route checkpoint, not as a promise that every object spawns in one exact coordinate. Match the landmark, compare the screenshot, then continue only if the return path is still clear.
If your game build looks different, stay with the same decision: keep oxygen safe, scan or collect the current blocker, and return before pushing into the next unknown area.
A power room frame helps connect the blueprint unlock to an actual base-energy job.
Scan each fragment and check blueprint progress immediately.
Use this step as a route checkpoint, not as a promise that every object spawns in one exact coordinate. Match the landmark, compare the screenshot, then continue only if the return path is still clear.
If your game build looks different, stay with the same decision: keep oxygen safe, scan or collect the current blocker, and return before pushing into the next unknown area.
Energy devices are useful only when they solve a base power problem.
Return once the blueprint is complete and test the build near a stable heat source.
Use this step as a route checkpoint, not as a promise that every object spawns in one exact coordinate. Match the landmark, compare the screenshot, then continue only if the return path is still clear.
If your game build looks different, stay with the same decision: keep oxygen safe, scan or collect the current blocker, and return before pushing into the next unknown area.
Thermal power routes should begin with heat and return-route awareness.
After-action plan
What to do after the guide works
Bank the result
Return once the blueprint is complete and test the build near a stable heat source.
Clean the inventory
Move route-critical materials into labeled storage so the next dive starts with empty space and a clear job.
Pick the next guide
A practical base-building planner for Habitat Builder timing, Square Room unlocks, storage, power, fabricator workflow, and first expansion decisions.
Next route queue
Use these as the next blockers to solve after this route. Each queue card keeps the same evidence style: source video, gameplay frames, and a written checklist.
Best immediate follow-upBase Building Route Planner
A practical base-building planner for Habitat Builder timing, Square Room unlocks, storage, power, fabricator workflow, and first expansion decisions.
Use if the route branchesHydroelectric Turbine Guide
A Hydroelectric Turbine fragment guide for base power, water-flow placement, blueprint progress, and safe route planning.
Save for the next diveGiant Alien Power Plant Guide
A route and puzzle guide for starting the Giant Alien Power Plant, reading activation rooms, and preserving the return path.
Detailed notes
Power unlocks should solve a base problem
Thermal Plant value comes from stable power on a route you actually use. The scan route should end in a build decision, not another unused blueprint.
How to use this in-game
Turn this note into one action before leaving base: decide the objective, keep only the materials or tools that support it, then stop the route once the scan, pickup, or landmark is confirmed. This keeps the guide useful even when Early Access patches move small details.
Fragment proof
Record the fragment room, depth band, heat cue, and blueprint progress. That gives the guide enough evidence to survive Early Access placement shifts.
Fragment
Heat cue
Progress
Build site
How to use this in-game
Turn this note into one action before leaving base: decide the objective, keep only the materials or tools that support it, then stop the route once the scan, pickup, or landmark is confirmed. This keeps the guide useful even when Early Access patches move small details.
Video route notes
Thermal Plant Fragments Guide should be followed as a completion route, not as a memory test. Start by watching the first route movement and naming the entry condition before copying the path in-game. Confirm that base power is the current blocker before chasing fragments. Then pause again when the video reaches the first visible proof point, because that is where the guide changes from general advice into an action you can repeat. Enter the fragment band with oxygen and heat safety in mind. If the route starts to feel different in your build, keep the same player goal: finish the unlock cleanly and know whether a return trip is needed.
Entry check: Scanner
Route action: Confirm that base power is the current blocker before chasing fragments.
Proof to look for: scan or pickup proof
Version note: Early Access / tracking
How to use this in-game
Turn this note into one action before leaving base: decide the objective, keep only the materials or tools that support it, then stop the route once the scan, pickup, or landmark is confirmed. This keeps the guide useful even when Early Access patches move small details.
Screenshot checkpoints
Use screenshots as checkpoints instead of decoration. The first image should answer where the route begins, the second should show what confirms progress, and the third should explain what to do after the scan, pickup, puzzle state, or threat read is visible. Scan each fragment and check blueprint progress immediately. This is especially important in Early Access because exact positions can drift while landmarks, depth bands, room states, and player decisions stay useful. A good screenshot lets you say, "I am at the right kind of place," before you risk oxygen, storage space, or vehicle safety.
Entry frame: match the landmark before moving deeper
Proof frame: confirm scan or pickup proof
Exit frame: know the return direction before adding side goals
Loadout frame: check Heat route awareness
How to use this in-game
Turn this note into one action before leaving base: decide the objective, keep only the materials or tools that support it, then stop the route once the scan, pickup, or landmark is confirmed. This keeps the guide useful even when Early Access patches move small details.
Stop rule and next dive
The most useful part of this page is the stop rule. Hunting Thermal Plant fragments before the base needs that power tier. Ignoring heat or depth pressure while chasing a final scan. When the objective is confirmed, return and convert it into progress: craft the upgrade, sort the material, save the route note, or mark the blocker as solved. If the route fails, do not repeat the same swim blindly. Change one variable at a time: enter from a clearer landmark, reduce inventory clutter, bring the missing tool, or wait until oxygen and vehicle support match the route. That turns a failed completion route into better field knowledge instead of another untracked cleanup sweep.
How to use this in-game
Turn this note into one action before leaving base: decide the objective, keep only the materials or tools that support it, then stop the route once the scan, pickup, or landmark is confirmed. This keeps the guide useful even when Early Access patches move small details.
Common mistakes
Hunting Thermal Plant fragments before the base needs that power tier.
Ignoring heat or depth pressure while chasing a final scan.
Unlocking the blueprint but not planning where it will produce value.
FAQ
Is this guide for the current Subnautica 2 build?
This page is written for Early Access and includes a visible update date. Treat exact values as tracking notes until the current build is field-tested.
Does this page use official screenshots?
Pages combine attributed official Steam / Unknown Worlds media, local gameplay frame captures, and source-video evidence cards. New player-submitted captures should keep the route, timestamp, and build context attached.
Community notes
Add a field report
Player reports enter a moderation queue. Approved notes can load from Supabase; pending drafts stay visible in this browser for follow-up.
Near starter shallows
Approx. 70-120m from pod
Confirm oxygen before leaving the first landmark. The route is much safer when you mark the return path before collecting side materials.
Guide-wide
N/A
Creature patrol ranges and fragment placement can shift between builds, so treat exact distances as field estimates until multiple players confirm them.