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POWER DELIVERY

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    Substation
    Grady EMC purchases energy from generation companies who then deliver the electricity over long distance transmission lines at a high voltage (46,000 to 115,000 volts) to Grady EMC substations.  Substations step down the voltage to a level that we can use in our distribution system.  Grady EMC currently has 15 substations throughout our service area.

    Distribution Transformer
    Upon leaving Grady EMC substations, electricity begins its journey to your home through our network of distribution lines.  Grady EMC lines are energized at 14,400 volts throughout our system.  To get the power down to a level that is usable in your home (120/240 volts), the electricity goes through a distribution transformer.

    Service Drop and Meter
    From the distribution transformer, a service wire, or a service drop, is connected to your house. If your service is overhead, the service wire will connect to your weatherhead, which is the point of connection between Grady EMC’s network and our member’s electrical wiring.  If your service wire is underground, we connect the service wire to your underground meter box. The meter box allows Grady EMC to measure the amount of energy being used in your home or business.