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ELECTRIC POWER TRANSMISSION & DISTRIBUTION SYSTEM
Power Plant/Generating Station
Fossil fuels, renewables
Step-Up Transformer
Raises voltage to transmission levels
Transmission
Substation
Distributes electricity
to other connections
or area substation
Other
Connections
Area Substation
Steps down voltage &
transmits to local transfomer
Local Transformer
Final voltage step-down to 120 volts
Local Circuit
Breaker/Fuse Box
Connected to switches/outlets
in home/establishment
Electric Meter
Records electricity use
for utility billing purposes
Utility
Bills end user
for electricity used
Source: The Freedonia Group, Inc.

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Electricity flow chart

  • 1. ELECTRIC POWER TRANSMISSION & DISTRIBUTION SYSTEM Power Plant/Generating Station Fossil fuels, renewables Step-Up Transformer Raises voltage to transmission levels Transmission Substation Distributes electricity to other connections or area substation Other Connections Area Substation Steps down voltage & transmits to local transfomer Local Transformer Final voltage step-down to 120 volts Local Circuit Breaker/Fuse Box Connected to switches/outlets in home/establishment Electric Meter Records electricity use for utility billing purposes Utility Bills end user for electricity used Source: The Freedonia Group, Inc.