Electricity supply chain. Artwork showing the generation and distribution of electrical power in the form of electricity. Wind turbines (centre and right background) generate electricity as their blades turn in the wind. Power stations (one at upper left) generate electricity from fossil fuels such as coal and oil. The electricity is distributed by high-voltage transmission lines supported by pylons (foreground), with substations stepping the voltage up and down. Underground cables (lower right) take the power to houses and street lights (bottom right). Other uses include trains (centre right). Lightning from thunderstorms (upper centre) are a natural form of electrical discharge.