Every recipe that produces Compacted Coal, compared at 100% clock speed on a single machine.
Only one recipe is built for Compacted Coal: “Compacted Coal”, 25.00 items/min per Assembler. But 4 other recipes shed it as a byproduct, and “Alternate: Dark-Ion Fuel”, making Ionized Fuel, alone gives 40.00 items/min, 1.60× the dedicated recipe. Count what the factory already spills before building a line for it.
Rates per minute are given at 100% clock speed. Solids are shown in items/min, fluids and gases in m³/min. Output per MW compares the step on its own; it excludes the power used upstream and by extraction.