Answer: Transmission networks operate at very high voltages (e.g., 110 kV, 220 kV, 400 kV, and even higher) to efficiently transport electricity over long distances with minimal loss. Distribution networks, on the other hand, use lower voltages that have been stepped down at substations. These lower voltages are then further reduced by local transformers (e.g., on utility poles) to a safe level (e.g., 230 V or 400 V in many regions) for use in homes and businesses.