Part of the series:
- No Man's Sky Base Building Guide (2026): From First Base to Automated Farms: Start here for the full base building overview.
- No Man's Sky Base Building Guide for Beginners: New to building? Start with the fundamentals.
- No Man's Sky Automated Mining: Mineral Extractors & Supply Depots: Power your mining operation once the grid is running.
Quick Answer
- Power is measured in kP (kiloPower); production and consumption rates are expressed as kPs (kiloPower per second).
- Solar panels produce 50 kPs during daylight hours only. Pair them with batteries so your base stays lit at night.
- Electromagnetic generators placed on a power hotspot produce constant power (roughly 130–315 kPs per generator, depending on hotspot class and placement) with zero fuel and zero downtime. They are the best long-term power source.
- Biofuel reactors are fuel-hungry and best treated as a temporary starter option.
- Electrical Wiring costs zero resources; run wires from every power source to a shared line, then branch into the base.
- Switches, proximity sensors, and logic gates let you automate lights, doors, and farms.
- If you plan to run automated mineral extractors, find an electromagnetic hotspot first. Solar setups struggle to keep up with the power draw.
Overview
Every piece of technology in your base (lights, fabricators, refiner arrays, storage units, teleporters) draws power. Once you place a base computer and start building, the game stops hand-holding you on energy. Either your lights stay on or they don't.
No Man's Sky offers three main ways to generate power, a battery system to bridge gaps, and a wire-based grid to tie it all together. Understanding how these interact early saves you from rebuilding your base layout later.
Power Basics: kP and kPs
Before placing anything, understand the two units the game uses:
- kP: a fixed amount of stored energy (used by batteries).
- kPs: the rate of power flow per second (used by generators and consumers).
When you open the build menu and hover over a powered device, the game shows its consumption in kPs. Keep a mental running total as your base grows. The simplest way to audit a live base is to temporarily add a battery and read the charge/discharge rate it displays.
Power Sources Compared
| Source | Output | Fuel Required | Best For |
|---|---|---|---|
| Solar Panel | 50 kPs (daytime only) | None | Early/mid-game, simple bases |
| Biofuel Reactor | 50 kPs (constant while fueled) | Carbon (and others) | Story missions, emergencies |
| Electromagnetic Generator | ~130–315 kPs (constant, 24/7) | None | Any serious base |
Solar Panels
Each solar panel produces 50 kPs while the sun is up. Placement is flexible: panels can go on rooftops, underwater (on ocean-bed bases), or inside prefab slots that have preset mounting points. What they cannot do is produce power at night.
A planet's day/night cycle runs approximately 30 real-time minutes per full cycle, though the exact split between day, twilight, and darkness varies by star system and by how close to the equator or poles your base sits. Because solar output drops to zero during the dark window, you must pair panels with batteries if you want continuous power.
Sizing your solar grid: A useful rule of thumb is two solar panels and one battery for every 50 kPs your base draws. One panel powers the base while the other charges the battery during daylight; the battery covers the night. For a base with a heavier load, use the battery's charge/discharge indicator as a live meter and add panels until the battery consistently gains charge throughout the day.
Biofuel Reactors
The biofuel reactor produces 50 kPs constantly, as long as you keep it fueled. A full charge takes 100 Carbon (or 34 Condensed Carbon, or 50 Oxygen) and lasts a long time, but at scale this becomes an annoying refueling chore. Use a biofuel reactor when the game's story missions require you to activate one. Then replace it with a solar or electromagnetic setup as soon as possible.
Electromagnetic Generators
This is the power source veteran players converge on. An electromagnetic generator placed directly on a power hotspot produces constant power day and night with no fuel. Output varies by the hotspot's class and by how close to the hotspot's centre the generator is placed:
| Hotspot Class | Generator Output (approx.) |
|---|---|
| C | ~130–170 kPs |
| B | ~200–240 kPs |
| A | ~260–280 kPs |
| S | ~290–315 kPs |
Generators placed further from the hotspot centre produce less power, so cluster them as close to the centre as possible. Multiple generators stack. Several generators on a single hotspot can together deliver hundreds of kPs of continuous power. There is no fuel cost and no battery dependency.
Finding a hotspot: You need the Survey Device upgrade installed in your Analysis Visor. The blueprint costs 320 Nanites from Iteration: Eos aboard the Space Anomaly. Once installed, activate Surveying Mode and watch for lightning bolt symbols on screen. Follow pulsing audio cues. When the tone rings equally in both ears, you're facing the hotspot. If you don't see signals immediately, walk a few hundred metres and scan again.
Important: hotspots must be within (or very close to) your base boundary to function. If you find a great hotspot, place your Base Computer near it rather than building away from it. Check out our guide on best base locations in No Man's Sky for advice on scouting sites that combine good biomes with hotspot access.
Crafting a generator: Metal Plating x2, Magnetised Ferrite x60, Chromatic Metal x75. The blueprint costs 10 Salvaged Data at the Construction Research Station on the Space Anomaly.
Batteries
Batteries bridge the gap between solar panel downtime (night) and base demand. Each battery stores 45,000 kP of energy. Multiple batteries drain simultaneously as a unified pool. Adding more batteries extends how long your base runs through a dark period.
When your solar panels are producing more than the base consumes, excess energy flows into the batteries. When the panels go offline at night, batteries discharge into the grid automatically. No manual switching required.
If you're running an electromagnetic generator setup, you typically don't need batteries at all. Output is constant around the clock.
Wiring Your Base
Electrical Wiring costs zero resources and has infinite supply. That said, each wire segment counts as a base part toward your part limit, so keep wiring runs economical.
The key principle: All powered devices share the same grid as long as they're connected. Directly or through the building's structural parts. Prefab and cuboid room pieces automatically conduct power to anything snapped to them. You often only need a single wire running from your generator array into the first room, and the rest of the base inherits power through the structure.
Practical wiring workflow:
- Place your generators (solar or electromagnetic) near the base perimeter.
- Run a single wire from each generator to a junction point or directly into the nearest wall.
- Connect batteries in the same wire network so they charge from surplus power.
- Stretch wire runs as far as possible before placing a new segment. This minimises total part count.
- Use an Electrical Cloaking Unit to hide unsightly wire runs without removing them.
Switches, Sensors, and Logic
Once wiring is in place, you can layer automation on top using the game's switch components.
- Proximity Switch: activates power when a player enters its detection radius (7.5u) and cuts it when they leave (9.5u). Useful for powering lights only when you're actually in the base, reducing pointless drain.
- Auto Switch: a conditional relay that passes power based on a signal input.
- Power Inverter: outputs the opposite of its signal input (on becomes off, off becomes on). Combine with a proximity switch to, for example, turn off an alarm when you're present.
- Logic gates (AND, OR, XOR): chain these with switches to build complex automations: timed lights, security systems, automated farm triggers.
These components are particularly useful on large bases where you want teleporters and base networking to stay powered while keeping decorative lighting off unless you're home.
There is one more switch worth knowing about: the ByteBeat Switch, which converts a music signal into pulsed power so lights flash in time with a track you composed in-game. See the ByteBeat music guide for the wiring layout.
Recommended Power Strategies by Base Type
Starter base (early game): Two or three solar panels wired to one or two batteries. This covers the basic tech you need while learning the game. No hotspot hunting required.
Mid-game resource base: Upgrade to an electromagnetic generator as soon as you unlock the Survey Device. Even a C-class hotspot with two or three generators gives you reliable, maintenance-free power for fabricators, refiners, and a teleporter.
High-output automated farm: Multiple electromagnetic generators on the highest-class hotspot you can find. Stack generators as close to the hotspot centre as possible. Proximity to the centre maximises each generator's output. This is a prerequisite for running mineral extractor arrays and large Activated Indium mining operations that demand continuous, high-volume power.
Scaling Past a Single Generator
For hotspot-driven grids, gas extraction, and power-budget math at industrial scale, see the power and industrial extractors guide.
FAQ
Do I need wires connecting every single device?
Not necessarily. Prefab rooms and cuboid building parts conduct power to anything snapped onto them. You need a wire entering the building, but devices inside the structure share the grid automatically. You only need additional wires for standalone devices placed away from the main structure.
Can solar panels work underground or inside a cave base?
Yes. Solar panels have flexible placement, including underwater and in caves via the prefab mounting system. Their output is based on planetary time of day, not line-of-sight to the sky.
What happens if my base runs out of power?
Powered devices simply stop functioning: lights go dark, fabricators halt, and automated systems freeze. Batteries act as a buffer; once they're empty during the dark cycle, things shut off until sunrise restores solar production (or you refuel a biofuel reactor).
Can I stack multiple electromagnetic generators on the same hotspot?
Yes. You can build several generators around the same hotspot and they all output power based on the hotspot's class and each generator's distance from the centre. Clustering generators close to the centre maximises total output.
How do I unlock the electromagnetic generator blueprint?
Visit the Construction Research Station aboard the Space Anomaly and spend 10 Salvaged Data. If you need more Salvaged Data, see our Salvaged Data farming guide for efficient methods.
Is there a power limit to how much a base can generate?
There is no hard cap on total power generation, but you are subject to the base's part limit, which constrains how many generators and wire segments you can place. Building efficiently (long wire runs, strategic generator placement) helps you stay under that limit while maximising output.
Key Takeaways
- Power is measured in kPs (rate) and kP (stored amount); every base device has a kPs consumption you can view in the build menu.
- Solar panels produce 50 kPs during daylight only: pair them with batteries (45,000 kP each) for overnight coverage. A good starting ratio is two panels and one battery per 50 kPs of base load.
- Electromagnetic generators on power hotspots are the best long-term solution: constant output varying by hotspot class and placement, no fuel, no downtime.
- Find hotspots using the Survey Device upgrade (320 Nanites from Iteration: Eos on the Space Anomaly) installed in your Analysis Visor.
- Wiring costs zero resources; prefab structures conduct power automatically, so minimise wire segments by running long single stretches.
- Proximity switches and logic gates let you automate base systems so power is used only when needed.
- For automated farms and mining arrays, always establish electromagnetic power first. Solar setups rarely keep up with high-drain operations.