Thermal Power Plant

The Thermal Power Plant is an early power-building unlocked by researching Thermal Power. It burns fuels with the Chemical fuel type to generate electricity, and it supports the widest range of fuels among the game’s power facilities. Its output is fixed by the plant, not by the fuel: better fuels simply last longer per item, while the plant still delivers the same power at any given load. Because thermal power only converts fuel at 80% efficiency, the usable energy is always lower than the displayed fuel value.

It can burn many common and intermediate fuels, making it a flexible option from the opening through the midgame. Typical fuels include Coal, Crude Oil and Refined Oil, as well as Graphite, Hydrogen, Deuterium, Fire Ice, Organic Crystal, Graphene, Carbon Nanotubes, Hydro Fuel, and Combustible Units. It cannot burn every fuel item, however: Deuteron Fuel Rod, Antimatter Fuel Rod, and Accumulator(Full) each have their own dedicated handling and do not belong in a Thermal Power Plant.

Thermal Power Plants scale their fuel consumption with demand, so they do not waste fuel at light load. One item burned always produces the same amount of energy, and all power facilities scale together. That means a thermal grid does not automatically defer to renewables such as Wind Turbines, Solar Panels, or Ray Receivers when power is available; the whole network adjusts as a group.

A useful layout trick is to chain multiple power plants together with Sorters instead of giving each one its own belt connection. This saves space and simplifies wiring, but it works poorly when mixed fuels are fed into the same chain. If the next plant in line receives a different fuel type than expected, it can stall, so single-fuel lines are more reliable.

In practice, the Thermal Power Plant is one of the easiest ways to expand generation early on because its fuel processing requirements are minimal. It is especially convenient before large-scale infrastructure is available, and it remains useful as a backup or overflow sink later. At the same time, it takes up considerable space for its output, so it does not scale as efficiently as larger power systems. Overuse in the midgame can also drain Coal and Crude Oil reserves and leave production short.

A common advanced use is overflow disposal for byproducts. For example, Refined oil and Hydrogen from a Refinery often build up unevenly, and one side of the line can clog if left unattended. Feeding the excess into Thermal Power Plants prevents bottlenecks while turning surplus material into power. Once Orbital Collectors are available, Hydrogen and Fire Ice can become renewable inputs, making Thermal Power Plants a renewable power source as long as Space Warpers are not being used to transport those resources from the collectors.