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?