The electricity that is supplied to homes is typically alternating current (AC) with a standard voltage level, such as 120 volts or 220-240 volts, depending on the country. The electrical power is generated at power plants, which can be fueled by various sources such as coal, natural gas, nuclear energy, hydroelectric power, wind power, or solar energy.
Within a home, the electricity is distributed through a circuit breaker panel or fuse box, which controls the flow of electricity to different areas or circuits of the house. From there, the electrical power is distributed to outlets, switches, and lighting fixtures throughout the home.