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Power System Brochure
Power Brochure
How dependable
electricity reaches you
| Generation
and transmission cooperatives (G&Ts), like Great River Energy, operate
power generating facilities. At a steam generating plant, the fuel (coal,
nuclear or biomass) heats water to make steam and drive a turbine. In a
combustion turbine, the fuel (gas or oil) is burned and the hot gas drives
a turbine. Wind hydro and solar are other forms of energy producers. |
High-Voltage
Transmission Lines
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| Transformers
at the generating plant increase the voltage up to a transmission voltage
(69 kV, 115 kV, 230 kV, 500 kV, 765 kV), so it can travel long distances
over high-voltage transmission lines. G&Ts operate these lines, which
carry the electric energy from the generating stations to the places where
electricity is used. |
TRANSMISSION SUBSTATION
Transformers reduce the electric energy
down to a lower voltage (69 kV, 34 kV) making it suitable for high-volume
delivery over short distances.
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LOCAL DISTRIBUTION SUBSTATION
Transformers reduce the electric energy down to a lower voltage
(69 kV, 34 kV) making it suitable for high-volume delivery over short
distances.
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Large
Industrial User
Most industries need 2,400 to 4,160 volts
to run heavy machinery. They usually have their own substation at
the facility.
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Distribution
Lines
Lines belonging to local electric co-ops carry electricity to
transformers that reduce power levels to 120/240 or 120/208 volts
for use in schools, farms, small businesses and homes.
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