Accumulator

Storage helps with supply timing but does not create energy; pair it with a generation source and demand profile.

When it fits: Consider it when a power design needs buffering, not as a substitute for inadequate generation.

The tradeoff: One source recipe run makes 1 and lists 5 Battery, 2 Iron plate at Assembling machine 1 / Assembling machine 2 / Assembling machine 3; 1 recipe variant(s) for this output are grouped together. Verify access where the pack is incomplete. The build cost is one-time while charge/discharge and network behavior depend on the actual source and load.