How Electricity is Transported

The electricity produced by a generator travels along cables to a transformer that changes the voltage of electricity. Power lines carry the high-voltage electricity over very long distances. When it reaches your home town another transformer lowers the voltage and smaller power lines bring it to homes, offices and factories.

Source: U.S. Energy Information Administration (Oct 2008).

A transformer lowers and raises the voltage
Image: Novoklimov, CC0,
via Wikimedia Commons