Factorio: find the isolated electrical network before adding generation
A machine can stand near a power pole and still lack the connection you expect. Diagnose the path from consumer to pole to the generating network. This exercise separates a pole’s supply area from the wires that link poles together.
Original explanatory diagram. Read the full method and limitations below.
Check the machine’s local coverage
Select or inspect the pole’s supply area and confirm that the machine is actually inside it. A pole’s visible position does not guarantee coverage of every nearby machine. Start with one consumer so the relevant area is easy to see. If the consumer lies outside the covered area, moving or adding a suitable pole addresses a local connection problem; expanding power generation elsewhere would not solve that missing local link.
Follow the pole-to-pole connection
A covered machine still needs its pole to belong to the network that contains a power source. Trace the wires through the practice area. Two groups of poles can form separate electrical networks even when they look close together. A missing wire link can therefore create an isolated island. The useful question is not whether the factory owns enough steam engines in total, but whether those engines share a network with this consumer.
Inspect the network information from the right place
Open the relevant network information through a pole in the affected group. Compare the listed production and consumption with what you expect that group to contain. If the generating equipment is absent from this network, investigate connectivity before interpreting a shortage as inadequate global capacity. A player’s whole base can contain several networks, so a single graph should not automatically be treated as a report for every electrical machine on the map.
Restore one link and observe the state
Reconnect the intended groups or correct coverage, then inspect the consumer’s status again. Do not change generation, pole placement and machine settings simultaneously unless the situation requires it. A small controlled change helps you learn which missing connection caused the problem. Record the local coverage, the connected pole group and the observed machine state separately. Those notes make a later apparent power problem easier to classify.
Illustrative worked example
Illustrative diagnosis: A mining drill sits inside a pole’s supply square, but the pole group is disconnected from the steam plant. The player inspects that group’s network and finds no generator. They plan a suitable wire connection and then observe the drill’s state. The example distinguishes a plausible cause from a proven result; the actual player should verify the network in their own save rather than assume every idle drill has this problem.
Questions that come up
Does nearby mean connected?
No. Supply coverage and pole-to-pole connectivity are distinct relationships. Inspect both instead of judging only by visual proximity.
Can adding a generator hide the real issue?
It can create a working local network without explaining the missing connection. If your goal is diagnosis, identify the island before deciding whether separate generation is actually desired.
References and scope
These sources support the factual background. Examples and exercises are original illustrative teaching material. References do not imply endorsement.
- Official Factorio Wiki: Electric system — Electric networks, pole connections and supply coverage.