The Traditional Power Grid
The traditional power grid is a centralized model, consisting of a complex network of power lines that transmit and distribute electrical power generated at central power stations to the end-users. From the power plants, electricity is stepped up to high voltage (500kV, 275kV, 132kV) and injected into the transmission lines which transport electricity over long distances. At the end of the transmission lines are the distribution sub-stations which step down the electricity to medium and low voltage (33kV, 22kV, 11kV, 400V/230V) for distribution to end-users.