450 MW Entry Pointsr
- Heat exchangers
- 0
- Steam turbines
- 0
- Size (tiles, width x height)
- 60 x 60
Factorio BlueprintsAll nuclear reactor blueprintsYoyo Ma's Power Book: 480 MW Square Nuclear Plant Blueprint
Yoyo Ma's Power Book: 480 MW Square Nuclear Plant Blueprint
A robot-fed 4-reactor plant in a 55 x 55 square, the small entry of a book that also holds 1.1 GW and 2.4 GW plants. The image shows all the book's shapes together.
Image of the Yoyo Ma Power Book nuclear plant blueprint
How much power does it make? 4 reactors, 480 MW
480 MWOutput (computed)
Reactors4Heat exchangers48Steam turbines83
- Reactors
- 4
- Output (computed)
- 480 MW
- Heat exchangers
- 48
- Steam turbines
- 83
- Reactors : exchangers : turbines
- 4 reactors : 48 heat exchangers : 83 steam turbines
- Fuel handling
- logistic-robotsFuel cells are delivered by logistic robots (requester chests).
- Size (tiles, width x height)
- 55 x 55
- Entity quality
- normal
- String exported by Factorio
- 2.0.47.0
- Designer
- Yoyo Ma
The plant's own label says 450 MW; this site computes 480 MW from the four reactors in a 2x2 block, with 48 exchangers taking the full 480 MW of heat. The difference is the designer's rounding, not a fault in the build.
String exported by Factorio 2.0.47.0. Decoded and checked by this site; not test-imported in the game.
Output (computed)
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.
The designer rebuilt this book for 2.0 with fewer parts, a smaller blueprint and better performance, and patched it after release. Robots deliver fuel through requester chests, and circuit logic keeps the reactors from burning cells that would only overheat.
Other plants in this blueprint book
The book also holds a 1.1 GW plant with 8 reactors and a 2.4 GW plant with 16, each with its own string, plus small entry-point pieces that connect the plants to your grid and produce no power on their own. The image on this page shows all the shapes together.
Medium - 1.1 GW Nuclear
- Heat exchangers
- 112
- Steam turbines
- 192
- Size (tiles, width x height)
- 108 x 63
1.1 GW Entry Pointsr
- Heat exchangers
- 0
- Steam turbines
- 0
- Size (tiles, width x height)
- 78 x 54
Large - 2.4 GW Nuclear
- Heat exchangers
- 240
- Steam turbines
- 408
- Size (tiles, width x height)
- 156 x 88
2.4 GW Entry Pointsr
- Heat exchangers
- 0
- Steam turbines
- 0
- Size (tiles, width x height)
- 157 x 89
Blueprint string
Your browser blocked copying. Click the string box, select all and copy it yourself.
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.