Source-checkedTechnology & automation

SMRs

by dorfl · for Factorio

Small modular nuclear reactors designed to be deployed off-grid at remote sites. SMRs are manufactured as sealed units with a fixed energy capacity, including both fuel and generator components. This means they can be quickly setup anywhere but once depleted must be returned to base for refurbishment.

823Downloads
6 yr agoLast updated
MITLicense
1.1Latest game version

About SMRs

From Factorio Mod Portal

Small modular nuclear reactors designed to be deployed off-grid at remote sites. SMRs are manufactured as sealed units with a fixed energy capacity, including both fuel and generator components. This means they can be quickly setup anywhere but once depleted must be returned to base for refurbishment.

https://en.wikipedia.org/wiki/Small_modular_reactor

https://forums.factorio.com/viewtopic.php?f=190&t=74435

Pros

  • Small footprint, quick and easy to deploy in the wilderness
  • High energy density compared to solar or accumulators

Cons

  • Limited energy supply rates
  • Uranium fuel cells for life span required in advance
  • Eventually becomes depleted and must be refurbished
  • Efficiency penalty compared to running power lines from main grid

And since this is Factorio, Cons are just another person's Pros :-)

Other notes

  • 5MW 10GJ / 25MW 100GJ / 50MW 500GJ
  • Supply priority is tertiary, same as accumulators, so an SMR on the main electricty grid is like a high-capacity accumulator that can't recharge.
  • SMRs retain fuel level if picked up and moved. Fuel reserve is visible as a health bar when in an inventory.
  • Current fuel level can be read by the circuit network, like an accumulator.

Highlights

From source data

Game versions

Built for Factorio 1.1.

Footprint

Rated a light load on a server.

License

Published under MIT.

SMRs on Nxeon

From our catalogue
One-click install
Supported on Nxeon Factorio servers. We download it from Factorio Mod Portal, place it, and restart the server.
Server side
Required on the server
Server load
light
Smallest plan we suggest
Factorio — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
0.3.0, released 2020-12-05

Recent builds

BuildReleasedGame versionsLoaders
0.3.02020-12-051.1n/a
0.2.02020-01-230.18n/a
0.1.72019-12-200.17n/a
0.1.62019-12-200.17n/a
0.1.52019-09-030.17n/a
0.1.42019-09-010.17n/a

Run SMRs on a Factorio server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Factorio Mod Portal as “Mods”

Technology & automation

Machines, power, logistics and automation.

Runs on your server

From source side support

Factorio Mod Portal lists SMRs as required on the server. Check its Factorio Mod Portal page to see whether players need it too.

Compatibility

Game
Factorio
Runs on
Serverrequired on the server
Game versions
1.1

Verified at the source

  • ✓Factorio Mod PortalOfficial listing, checked 2026-10-09Open ↗
  • ✓Authordorfl, as published on Factorio Mod Portal
  • ✓LicenseMITFree

SMRs, answered

Generated from the mod’s own source data.

Do my players need to install SMRs?

Factorio Mod Portal lists SMRs as required on the server. Check its Factorio Mod Portal page to see whether players need it too.

Is it free?

Yes. SMRs is free to download from Factorio Mod Portal. Its license is MIT.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run SMRs on a Factorio server.

Deploy in about a minute from $2.99 a month, then add SMRs in one click.