High-voltage power lines are electrical transmission lines that carry electricity at high voltages, typically above 100,000 volts. They are essential for transporting electricity over long distances from power plants to substations, where the voltage is reduced for local distribution. These lines are often seen on tall towers and are designed to minimize energy loss during transmission. The high voltage helps to reduce the amount of current needed, which in turn decreases the heat generated in the wires. This efficiency is crucial for meeting the energy demands of cities and industries. Safety measures, such as clearances and insulation, are implemented to protect people and wildlife from electrical hazards associated with high-voltage power lines.