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Transmission Update

Presented to the TVA5th Annual Transmission Customer & Power

Marketers’ MeetingNashville, Tennessee

May 3, 2007

New Bulk Power System Indicators

• Currently being developed for multiple use• Screening tool for resource siting &

transmission service costs• Internal measure of system strength• Upstream indicator of future capital

expenditures• Caveat: the following slides use outdated

assumptions & are only for illustration

Gen:3770Ld:4400

S07 (10-25-06)

Gen/Load in MWs

Gen:760Ld:2520

Gen:1690Ld:1800

Gen:4730Ld:2630

Gen:2030Ld:5240

Gen:2420Ld:2000

Gen:5020Ld:4580

Gen:1000Ld:1630

Gen:6270Ld:6570

Gen:7160Ld:2760

Gen:3770Ld:5200

S16 (10-25-06)Gen/Load in MWs

Gen:760Ld:2970

Gen:1660Ld:1020

Gen:4730Ld:3140

Gen:2030Ld:6200

Gen:2420Ld:1960

Gen:5010Ld:5490

Gen:980Ld:2120

Gen:6290Ld:8100

Gen:7820Ld:3190

Questions/Comments/Suggestions

Contact:David TillManager, Transmission PlanningTVA1101 Market Street, MR 5G-CChattanooga, TN 37402423/751-7147

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