
What is the difference between power transmission and distribution?
2025-08-11This is a fundamental question that is frequently searched by those seeking to understand the electrical grid.
Answer: power transmission and distribution are the two main stages of delivering electricity from a power plant to the end user, but they serve distinct purposes.
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power transmission is the large-scale movement of high-voltage electricity over long distances. It acts as the "backbone" of the power grid, connecting generating stations to substations located near populated areas. To minimize energy loss during this long journey, electricity is stepped up to very high voltages (e.g., 69 kV to 765 kV) at the generating station before being sent through our overhead transmission lines or underground cables.
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Power Distribution is the final stage of electricity delivery, where voltage is stepped down to a level safe and suitable for commercial, industrial, and residential use (e.g., 11 kV to 440 V). This network consists of smaller lines and equipment that carry power from substations directly to homes and businesses.
Think of it this way: Transmission is the highway that moves bulk goods between major cities, while distribution is the local street network that delivers those goods to individual houses and stores.