FortressCraft Evolved Wiki

The Pyrothermic Generator (PTG) is the first craftable power generator available to the player. The power per second (PPS) it generates is determined by the fuel it is burning and by the depth it is placed. Place the fuel in an adjacent hopper and the Pyrothermic Generator will supply power to any adjacent machine that consumes power. It will only start burning fuel once its internal buffer drops below half, and takes several seconds to ramp up. Each unit of fuel will burn for 30 seconds. The following table lists the power generated per second for each fuel type (on 'Plentiful' power setting).

Fuel Name PPS Normal PPS Scarce PPS Rapid PPS Rush Total Power
Leaves 1 30
Glowpods 7 104 210
Tree Trunk 7 104 210
Coal Ore 10.67 4.25 32 160 320
Enriched Coal 21.33 8.5 64 320 640
Infused Coal 42.67 17 128 640 1280

The generator becomes less efficient the further below the surface it is placed because of a lack of air. From the surface till -25m it will work at 100% efficiency. Each tile lower result in -3% efficiency. The lowest depth it can work at is -55m at an efficiency of 10%. Below that, it works but only at about 3.8 PPS with infused coal on rapid(tested in the cold caverns at -246m)and continues to work to at least 420m

On Scarce, Infused Coal gives ~17 pps for a total of 504 power.

The maximum transfer rate is 128 PPS per face. This is most notable in Rush mode, where some fuels give more than 128 PPS total when multiple faces are used.


17 Sept 2019: Added info about rush mode.
13 Jan 2018: Added information about depth according to version 17 by Lovely Santa.
08 Jan 2017: Updated to version 15.5 by Lovely Santa