![A block diagram of the current electrical grid.](https://e1ps.tripod.com//sitebuildercontent/sitebuilderpictures/oldgrid.jpg)
1. Central Power Generator This could be a nuclear, hydro, turbine or other large scale power generating plant. They transmit power with high voltage through hundreds of miles of high-tension wires. 2. Sub-Stations These are located throughout the grid to convert high voltage to 220/115 VAC for distribution to residential and business customers. 3. Customers The end-users of the electrical power grid. |