Coal Generator

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Coal Generator
Coal Generator.png
Burns coal for electricity for your power grid.
Has an input so feeding coal can be automated.
Category Power
Subcategory Generators
Unlocks at Tier 3

Power Generated 50 MW
Fuel Coal, Compacted Coal
Overclockable Yes
Inputs 1
Outputs 0
Width 10 m
Length 25 m
Height 36 m
Modular Frame.png
Resources breakdown [Expand]
3 ×  Modular Frame
9 ×  Reinforced Iron Plate
36 ×  Iron Plate
72 ×  Iron Ingot
72 ×  Iron Ore
216 ×  Screw
36 ×  Iron Rod
36 ×  Iron Ingot
36 ×  Iron Ore
18 ×  Iron Rod
18 ×  Iron Ingot
18 ×  Iron Ore
5 ×  Rotor
110 ×  Screw
19 ×  Iron Rod
19 ×  Iron Ingot
19 ×  Iron Ore
15 ×  Iron Rod
15 ×  Iron Ingot
15 ×  Iron Ore
15 ×  Cable
30 ×  Wire
10 ×  Copper Ingot
10 ×  Copper Ore
Total Base Ingredients
160 ×  Iron Ore
10 ×  Copper Ore

The Coal Generator is a building that generates Power by using  Coal. It is the first fully automate-able power source the player has access to and also the first power source to use a mined resource. For Beginner's guide for setting up coal power, see the section below.

Fuel energy values[edit | edit source]

Energy is given in MJ. 1MJ provides 1 MW of power for 1 second or 50 MW of power (1 Coal Generator at 100% load) for 0.02 seconds.

Fuel Type Energy Stack Size Energy/Stack Burn time(sec) Burn time/stack (s) Burn time/stack (min)
Coal 270 100 27k 5.4 540 9
Compacted Coal 600 100 60k 12 1200 20

Generators per node[edit | edit source]

A single node can support the following number of coal generators operating at sustained peak capacity:



Miner Coal Mined/Minute Number of

Coal Generator**

Total Power
Impure 30 2.7 135MW
Normal 60 5.4 270MW
Pure 120 10.8 540MW
Impure 60 5.4 270MW
Normal 120 10.8 540MW
Pure 240 21.6 1080MW
Impure 120 10.8 540MW
Normal 240 21.6 1080MW
Pure 480 43.2 2160MW

**The decimal in the Number of Coal Generator column means the last generator might not be able to run at 100%. Underclock the last generator to prevent power trip.

The equation is as follows:

Coal Mined Per Min\times Fuel Burn Time \over 60sec

For a coal generator that is not overclocked, its Fuel burn time is 5.4 seconds (displayed next to the stopwatch in the coal generator UI), i.e. it needs 100 / 9 = 11.11 coal/min

Fuel burn time and peak capacity[edit | edit source]

The real Fuel Burn Time with all generators depends on the amount of power actually being used. However, the UI does not show the real burn time, it shows the burn time if the generator is operating at peak capacity.

So, the 5.4 seconds burn time for Coal Generators shown in game is how long it takes to burn 1 Coal if all of the power that the generator can possibly produce is being used.

For example: if a base has 1 Coal Generator, and is using all of the possible 50 MW, the fuel burn time will be 5.4 seconds. But, if the base is only using 25 MW, the fuel burn time will be (supposedly) doubled. (More research needed on this).

Beginner's guide for setting up coal power[edit | edit source]

Before you start[edit | edit source]

Stage 1[edit | edit source]

Stage 1 coal power
  1. Find a way to reach the coal node, by building ladders or bridges. In this example, a Foundation bridge is built to cross over the void.
  2. Kill all hostile creatures guarding around the pure node. It is advised to engage them one-by-one.
  3. Remove the coal deposit sitting on top of the coal node (if any).
  4. Build a Miner Mk.1 on the coal node.
  5. Find a large empty space around it, then build a long 4x8 tiles of foundations as the floor. Additional foundations might be required to connect between the coal node and the floor. Prepare at least 300 concrete to do so.
  6. Build 6 coal generators, each with a Splitter in front of it. The direction of the flow is from the miner, through the main line, then split into individual generator.
  7. Connect all generators and splitters from the miner with Conveyor Belt Mk.1. Make sure the direction is correct.
  8. Between the 1st and 2nd coal generator, build a power pole. Put the 2nd pole between the 3rd and 4th generator and repeat down the line. Connect all power lines.
  9. Hand-mine 50 pieces of coal from the node and insert it into any of the coal generators you have built. This must be done to prime the generators.
  10. Connect the power line from the first pole to the Miner Mk.1. Once the coal power is running up smoothly, check if the power pole displayed power capacity as 300MW. If not, check all your belt and power line connections.
  11. Finally, connect the power line back to your main base. You may consider deconstructing all the Biomass Burners at your base.

Phase 1 complete. Now you have 300MW of peak power capacity (270MW for sustained power consumption).

Stage 2[edit | edit source]

Stage 2 coal power
Mk2 belt split
  1. Complete the Milestone - Logistics Mk.2 to unlock Conveyor Belt Mk.2.
  2. Extend the 4 x n foundations for your coal power.
  3. Build 5 additional coal generators for a total of 11. Build additional power poles accordingly and connect them all with power lines.
  4. Just in front of the Miner, insert a splitter into the belt by aiming the hologram of the splitter at it.
  5. From the splitter, split off another line of belt Mk.1 and feed into the 5 new coal generators you have built just now.
  6. In-between the miner and the splitter in front of it, upgrade the belt to Mk2. You can upgrade the belt in-place by selecting the mk2 blueprint and aim at the mk1 belt.

Phase 2 complete. Now you have 550MW of peak power capacity (520MW for sustained power consumption).

Stage 3[edit | edit source]

Overclocking the miner
Re-arranging the splitter
Stage3 coal power
  1. Unlock Mk3 belts and Steel Production.
  2. De-construct the Miner Mk.1 and replace it with Miner Mk.2.
  3. Open the Miner UI, Put a Power Shard into the overclocking slot and overclock it to 113%. To do so you can use the slider or by typing the number manually.
  4. Remove the Mk2 belts and 2 lines Mk1 belt in front of the Miner. Also remove the splitter.
  5. Re-arrange the splitter direction, such that the splitter in-front of the Miner should receive the input from the miner. All other splitters should face either left or right according to the item flow.
  6. Connect the miner and the splitters with Mk3 belts.
  7. Replace all other conveyor belts in your coal power setup with Mk3 belts.
  8. Build 14 additional coal generators down the line (25 coal generators in total). You may need to extend the foundations to accommodate their space.
  9. Connect them with power lines and conveyor belts, splitters, etc.

Phase 3 complete. Now you have 1250MW of peak power capacity (1215MW for sustained power consumption).

Stage 4[edit | edit source]

  1. Unlock Mk4 belts and use them in your coal power setup.
  2. Overclock the Miner Mk2 to 200%.
  3. Extend the number of coal generators to 44 for a peak capacity of 2200MW.

Stage 5[edit | edit source]

  1. Unlock Mk5 belts and extend the number of coal generators to 71 for a peak capacity of 3550MW.
  2. Unlock Miner Mk.3 for higher production rate, by completing Tier 7 - Bayer process.
  3. At this stage you might consider switching to Oil Powers or Nuclear Powers.
  4. Alternatively, you can choose to enrich your coal for increased number (2.22 times) of coal generators. To do this you need to unlock the Alternative Recipe for Compacted Coal.

Trivia[edit | edit source]

  • The Coal Generator, like all power generating buildings, behaves differently to other buildings when overclocked. See Clock Speed for more info.
  • The top part of the chimney is not inside the building collision box; it will stick through a foundation if the foundation is built 32meters above it.

See also[edit | edit source]