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DOE Energy/Water Interdependency TTX
Steve LewisGeorgia Power Company
April 25, 2007
“Electricity Systems Overview”
South
Coastal
CentralWest
East
Northeast
Northwest
Metro S.
Metro E.
Metro NMetro W.
Georgia Power Facts & Figures
Customers by region
Metro Atlanta 1,126,351
Central 166,579
East 145,917
Northeast 165,063
Northwest 169,883
South 127,992
West 137,932
Coastal 265,959
Customers
Georgia Power's customers as of December 31, 2006, totaled 2,305,676 in the following categories:
Residential 1,998,643
Commercial 294,654
Industrial 8,008
Other Retail 4,371
Georgia Power Facts & Figures
Generation Sources in 2006
74.4% Coal
18.2% Nuclear
6.2% Oil & Gas
1.2% Hydro
Distribution Statistics:
Line Miles 68,039
Circuit Miles 74,572
Cable / Wire Miles 204,480
Poles 1,806,492
Transformers 634,802
Distribution Substations 876
Street Lights (All Classes) 816,173
Distribution Feeders 2,042
Distribution Hq. Locations: Headquarters 49
Satelite Hq's. (Minimal Staff) 20
Total 69
PotentialPotential
Voltage Pressure
Electrical Potential (measured in Volts) on the electrical transmission system is analogous toPressure (measured in Pounds per square Inch,
PSI) on the water system.
PowerPower
Watts Flow Rate
Electrical Power (measured in Watts) on the electrical transmission system is analogous to
Flow rate (measured in GPM) on the water system.
EnergyEnergy
Watt-hours Gallons
Electrical Energy (measured in Watt-Hours) on the electrical transmission system is analogous to Total Water Delivered (measured in Gallons) on the water
system.
Characteristics of ElectricityCharacteristics of Electricity
Travels at the speed of light.
Cannot be “stored” – long term
Cannot be “routed”
100kVLines
44kVLines
TRANSMISSION SUBSTATION
500kVor
230kV
GENERATINGSTATION TRANSMISSION
LINES
GSU TRANSFORMER
HOME OR BUSINESS(CUSTOMER)
RETAIL SUBSTATION
INDUSTRIAL OR CUSTOMER STATION
To Other Loadsand Generation
GeographicBoundary
ControlCenter
100kVLines
44kVLines
TRANSMISSION SUBSTATION
or230kV
GENERATINGSTATION TRANSMISSION
LINES
GSU TRANSFORMER
HOME OR BUSINESS(CUSTOMER)
RETAIL SUBSTATION
INDUSTRIAL OR CUSTOMER STATION
To Other Loadsand Generation
GeographicBoundary
ControlCenter
Tie LinesTie Lines
49 Tie Lines connect the Southern electrical system to neighboring utilities in the southeastern United States.
JEA
DukeSCE&G
FPLFPC
TVA
SanteeCooper
Tal
Entergy
AECSMEPA
Questions?