Answer: Electrical transmission is the process of moving electrical energy from power generation plants to substations near populated areas. It's the "highway" of the power grid. The process works in a series of steps:

1. Generation: Electricity is produced at a power plant.

2. Step-Up Transformation: A step-up transformer at the power plant increases the voltage to a very high level (e.g., 100 kV to over 765 kV). This is the key to efficient long-distance transport, as higher voltage reduces current, which in turn minimizes energy lost as heat.

3. High-Voltage Transmission: The high-voltage electricity is sent over long distances through overhead power lines or, less commonly, underground cables to a substation.

4. Step-Down Transformation: At the substation, a step-down transformer reduces the voltage to a lower level, suitable for local distribution.

5. Distribution: The electricity is then distributed to homes and businesses via a network of lower-voltage power lines.

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