Electrical power is a little bit like the air you breathe: You don’t really think about it until it is missing. Power is just “there,” meeting your every need, constantly. Being a Littleton electrician, we think about different sources of power just a little more intently.
It’s only during a power failure, when you walk into a dark room and instinctively hit the useless light switch that you realize how important power is in your daily life.
Electrical power travels from the power plant to your house through an amazing system called the power distribution grid. The grid is quite public — if you live in a suburban or rural area, chances are it is right out in the open for all to see. It is so public, in fact, that you probably don’t even notice it anymore. Your brain likely ignores all of the power lines because it has seen them so often.
Although most of us take the power grid for granted, it’s anything but simple. There are 450,000 miles (724,205 kilometers) of high-voltage power lines and 160,000 miles (257,500 kilometers) of overhead transmission lines in the United States connecting electrical power plants to homes and businesses [source: DOE]. Since large amounts of energy cannot be stored, electricity must be produced as it is used [source: EIA]. The power distribution grid must respond quickly to shifting demand and continuously generate and route electricity to where it’s needed the most.
Read the full article here: How Power Grids Work http://bit.ly/2tjGvVR