Satisfactory
Coal Power Planner
Coal power is where Satisfactory first makes you balance a setup properly, since a lopsided coal plant browns out the very factory it was meant to run.
Coal Power Planner
Total Power Output
Water Extractors
360 m³/min
Mk1 Miners
120 Coal/min
Advertisement
How the numbers are worked out
Every generator burns coal and uses water at fixed rates, so once you know how many generators you want, the miners and water extractors follow. The calculator hands you the whole chain — generators, coal supply, water supply — as one answer instead of three puzzles.
The formula
- power = generators × base power × (overclock ÷ 100)
- coal = generators × base coal × (overclock ÷ 100)
- water = generators × base water × (overclock ÷ 100)
- extractors = ceil(water ÷ 120) · miners = ceil(coal ÷ miner output)
Advertisement
Common mistakes
Water is the side people build too little of. Extractors top out at a maximum flow, and pipes have headlift limits over distance, so a design that adds up on paper can still fail because the water physically cannot get there fast enough. Err towards extra water, not extra coal.
A worked example
Eight coal generators at 100% produce 600 MW. They burn 120 coal a minute, which two Mk.1 miners on a normal node cover at 60 each, and drink 360 cubic metres of water a minute, which takes three water extractors at 120 each. Clock all eight down to 50% and the power, coal and water all halve: generators scale in a straight line, so underclocking a generator never makes its fuel go further.
Remember the extractors' own power
The calculator counts the water extractors you need but not what they draw. Each one consumes power from the same grid, so a plant's usable output is a little less than the generators' total. Build a small margin rather than running a grid at exactly its rated capacity.
More calculators you might need
Factorio
Assembly Line Ratios
Assemblers needed per tier for an output rate, and the input that rate demands.
Space Engineers
Atmospheric Lift
How many thrusters of each type lift your loaded ship off a given planet.
Oxygen Not Included
Self-Powered Oxygen (SPOM)
Electrolyzers, pumps and generators for an oxygen module that powers itself.