Kettle Engine
Burns steam piped in from the Vortex Separator, turning a little water and lava into steady power.

- Output
- 80 FE/t
- Buffer
- 20,000 FE
- Fuel
- Steam
- Tank
- 8,000 mB
- Upgrades
- Kits, modules
- ID
enthalpy:kettle_engine
What it does#
The Kettle Engine burns steam and turns it into FE. It makes 80 FE/t while it has steam, and pushes that power out of its front into whatever is touching it.
Steam has no bucket in the world: it only moves through pipes and tanks. You make it in the Vortex Separator's fluid mode from water and lava, and pipe it from the separator into the engine. A bucket of steam is worth 25,000 FE, about 16 s at base output.
Building it#
Crafting Table







Using it#
There is no fuel slot. Fill the tank with a bucket (use the bucket on the engine) or pipe fuel into an input face. Click the tabs and the coloured faces below; they behave like the real screen.

- Runs on steam, ours or other mods'
- Make steam from water and lava in the Vortex Separator's fluid mode
- Pipe steam into input faces
- Economizer: more FE per bucket
- 1The engine's own store of power. It fills while nothing takes the FE and empties as neighbours draw it.
- 2Running while it burns. Idle when the tank is empty; Disabled when redstone has switched it off.
- 3The fuel tank. Hover it for the fluid, how much is in it and what a bucket is worth. It can be filled but never drained, so it only ever gives its contents to the engine.
- 4What it makes each tick, how full the buffer is, and how long the whole tank lasts at the current output.
- 5Which faces take fuel and which push power. Click a face to change it; right-click to go back.
Fuels#
Steam, ours or another mod's, as long as it carries the steam tag. Because you cannot carry it in a bucket, plan a pipe from its source.
| Fluid | FE per bucket | A bucket lasts, at base rate |
|---|---|---|
Steam #c:steam | 25,000 FE | 15.6 s |
Automation#
Out of the box it powers whatever its front touches, no cable needed:
Front Output (pushes FE); Every other face Input (takes fuel). Auto-input off, Auto-output on.
Pipe fuel into any input face, or turn on Auto-input to pull it from a tank beside it. Side configuration explains faces, modes and redstone control for every machine.
Upgrades#
A tier kit raises its output and buffer and opens module slots.
| Tier | Kit | Output | Buffer | Module slots |
|---|---|---|---|---|
| Base | None | 80 FE/t | 20,000 FE | 0 |
| Tempered | 160 FE/t | 40,000 FE | 2 | |
| Fortified | 240 FE/t | 80,000 FE | 4 | |
| Luminous | 320 FE/t | 160,000 FE | 6 | |
| Harmonic | 480 FE/t | 320,000 FE | 8 |
Celerity Module · up to 4
Economizer Module · up to 4
Engines trade their two modules against each other:
- Celerity raises output by 50% each, but every bucket gives less FE.
- Economizer adds 34.375% FE per bucket each and 25% buffer.
Four Celerity modules triple the output, 3×, at 33% of the FE per bucket. Four Economizers get 2.375× the FE from every bucket at the same output. Four of each give 79% of the FE per bucket at triple the output.
Good to know#
- Steam cannot be bucketed, so the engine is fed by pipe or tank only; the Vortex Separator sits beside it for the shortest run.
- The engine draws fuel from the tank in small sips, so a half-empty tank still runs at full output.
- Its running sound is a crackle over a low hum. Turn it off with Sounds on the Configuration tab.
- With Jade installed, looking at the engine shows its output and the fuel left.
For pack makers: the settings behind these numbers
| Setting | Default | Range | What it does |
|---|---|---|---|
engines.kettleEnergyPerTick | 80 | 1 to no limit | FE per tick the Kettle Engine generates while burning, before upgrades. Fuel values are in data/enthalpy/data_maps/fluid/kettle_fuels.json |
engines.energyCapacity | 20,000 | 1 to no limit | Energy buffer of the Caloric Engine before upgrades, in FE |
engines.maxEnergyOutput | 1,000 | 1 to no limit | Maximum FE per tick the Caloric Engine pushes out before upgrades |
engines.fluidTankCapacity | 8,000 | 1,000 to no limit | Fuel tank size of the Igneous, Ignition and Kettle engines, in mB |
upgrades.rateMultipliers | 1 / 2 / 3 / 4 / 6 | Energy rate (and therefore speed) multiplier per tier: base, tempered, fortified, luminous, harmonic | |
upgrades.capacityMultipliers | 1 / 2 / 4 / 8 / 16 | Energy buffer and transfer multiplier per tier: base, tempered, fortified, luminous, harmonic | |
upgrades.celeritySpeedBonus | 0.5 | 0 to 100 | Extra speed per Celerity module (0.5 = +50%) |
upgrades.engineEconomizerFuelBonus | 0.3438 | 0 to 100 | In engines, each Economizer module adds this much FE per unit of fuel (0.34375 = +34.375%), while each Celerity module divides it by (1 + celerityCostIncrease). With the defaults, 8 Celerity and 8 Economizer modules leave an engine at 75% of its base FE per fuel, and 8 Economizers alone at 375%. |
upgrades.engineEconomizerCapacityBonus | 0.25 | 0 to 100 | In engines, each Economizer module grows the energy buffer by this much (0.25 = +25%) |
Fuel values are in the enthalpy:kettle_fuels fluid data map, keyed on fluid tags, so any mod that tags its fluid is picked up.
Related#
- Vortex Separator: makes the steam
- Igneous Engine: lava
- Ignition Engine: oils and fuels
- Fuel tables: every fuel for every engine
- Choosing an engine and fuel
- Upgrades and modules