How does electricity get to your home?

Electricity is generated in a power plant.  Once the power leaves the generator, it enters a transmission substation.  This stop is still at the power plant.  The electricity is then sent off for long-distance transmission on a transmission grid at a very high voltage.  The longest transmission distance is usually about 300 miles (483 kilometers).  The transmission lines are huge steel towers that can be seen from a distance. 

The electricity doesn't get to your house directly from the transmission grid. The electricity is first moved down to the distribution grid. The distribution lines carry a lower voltage of electricity than the transmission grid.  This conversion of power happens in a power substation.  The distribution wires that carry electricity to your house go through another transformer that reduces the voltage even more.  Finally, the electricity you use in your house goes through a meter that tells the power company how much electricity you use (and need to pay for).

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