Factorio BlueprintsAll nuclear reactor blueprintsLegendary Nuclear Reactor Blueprint: 4.4 GW (12 Reactors)
Legendary Nuclear Reactor Blueprint: 4.4 GW (12 Reactors)
Twelve legendary reactors with legendary exchangers and turbines, robot-fed.
Image of the co3moz Legendary 4.4 GW nuclear plant blueprint
How much power does it make? 12 reactors, 1,760 MW
1,760 MWOutput (computed)
- Reactors
- 12
- Output (computed)
- 1,760 MW
- Output in the design name (MW)
- 4,400
- Heat exchangers
- 180
- Steam turbines
- 304
- Reactors : exchangers : turbines
- 12 reactors : 180 heat exchangers : 304 steam turbines
- Fuel handling
- logistic-robotsFuel cells are delivered by logistic robots (requester chests).
- Size (tiles, width x height)
- 86 x 117
- Entity quality
- legendary
- String exported by Factorio
- 2.0.55.0
- Designer
- co3moz
The design places legendary entities. This site's 1,760 MW uses normal-quality ratings, so it understates the plant; the 4.4 GW in the name assumes legendary parts, which you need for that output.
String exported by Factorio 2.0.55.0. Decoded and checked by this site; not test-imported in the game.
The output shown is computed by this site from the blueprint itself, using normal-quality numbers from the official wiki. Each reactor makes 40 MW of heat plus another 40 MW for every fuelled reactor touching it, which is why a 2x2 block gives 480 MW and a long double row gives 160 MW per reactor minus 160 MW. A heat exchanger turns at most 10 MW of heat into steam and a steam turbine turns that steam into 5.82 MW, so the plant delivers whichever of the three totals is smallest: reactor heat, exchanger capacity or turbine capacity.
Heat exchanger and turbine ratio
A plant is balanced when its exchangers can take all the reactor heat and its turbines can use all the steam. With normal-quality buildings that is one heat exchanger for every 10 MW of heat and about 1.72 turbines per exchanger, because one exchanger makes roughly 103 steam per second and one turbine uses 60. Compare this plant's counts with that: more turbines than needed is harmless, but too few exchangers caps the output.
How fuel cells get in
Fuel cells are brought by logistic robots to requester chests next to the reactors, so the plant needs a logistic network with fuel cells in it. Used cells must be taken out as well, because a reactor holding spent cells stops accepting new ones. A fuel cell burns for 200 seconds whether or not the power is used, so the useful designs only add a cell when the reactor is cool or the steam store is low.
Every reactor, exchanger and turbine is legendary quality; the designer thinks it could be smaller but is happy with it.
Blueprint string
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Copy the string and press Import string on the shortcut bar in the game, then paste. It was exported from the Factorio 2.0 version shown above. This site decoded it and counted the reactors, exchangers and turbines, but did not import it in the game; check the designer's notes above for water and start-up needs.