Let's start at the electric generating station. Generating stations are where huge amounts of power are first created. SRP mainly relies on coal-fired generating units in Arizona, Colorado, Nevada and New Mexico, a nuclear plant west of Phoenix, hydroelectric units at dams on the Colorado and Salt rivers, and oil- and gas-fired units in central and southern Arizona.
At these generating stations, heat from the burning of fossil fuels (for example, coal, nuclear, oil or gas) is used to boil large amounts of water, which produces steam. This steam is then forced through the blades of a turbine, causing it to turn. At hydroelectric units, falling water, not steam, is used to turn the blades.
The spinning turbine is attached to magnets that are inside a generator. When the turbine spins, the magnets spin inside of the generator. This process transforms the energy created by the spinning turbine into electrical energy.
When you consider that these generating stations can be very far away, the next questions is, How does electricity from another state reach my home?