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Data as of 2026-09-19
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Built 2026-09-21 (21 September 2026)

TVA Daily Load Shape and Duck Curve by Hour, 22 August to 19 September 2026

In the 29 complete local days from 22 August to 19 September 2026, electricity demand in TVA averaged 23,474 MW and typically peaked at 15:00 local time (29,812 MW) and bottomed out at 04:00 (17,502 MW). With solar taken off, the remaining load fell to 17,502 MW at 04:00 and then rose 289 MW between 14:00 to 17:00. Hours are local clock time (America/Chicago).

Key Facts

  • Over 29 complete local days from 22 August to 19 September 2026, average demand in TVA was 23,474 MW. The hour of the day with the highest average demand was 15:00 local time (29,812 MW) and the lowest was 04:00 (17,502 MW).
  • The single highest hour of demand in the 30 day window was 33,092 MW, in the hour starting 3 Sept 2026, 15:00 CDT (UTC-05:00).
  • Solar output averaged 2,163 MW at its 13:00 peak, 9% of average demand.
  • Demand minus solar (net load) averaged 22,802 MW, fell to 17,502 MW at 04:00 and rose 289 MW over the three hours from 14:00 to 17:00, 1% of average demand.

Average Day by Local Hour

29 days to 2026-09-19, America/Chicago time
TVA average demand and net generation by local hour Average electricity demand in TVA by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 04:00 (17,502 MW) and highest at 15:00 (29,812 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 7,500 15,000 22,500 30,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in TVA by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 04:00 (17,502 MW) and highest at 15:00 (29,812 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports.
Mean MW by local hour, 2026-08-22 to 2026-09-19
TVA average demand and net generation by local hour
Local hour (America/Chicago)DemandNet generation
00:0019,536 MW18,868 MW
01:0018,595 MW17,939 MW
02:0017,914 MW17,294 MW
03:0017,541 MW16,965 MW
04:0017,502 MW16,931 MW
05:0017,934 MW17,376 MW
06:0018,445 MW17,814 MW
07:0019,125 MW18,441 MW
08:0020,567 MW19,624 MW
09:0022,407 MW21,256 MW
10:0024,472 MW22,927 MW
11:0026,388 MW24,398 MW
12:0027,880 MW25,585 MW
13:0028,783 MW26,068 MW
14:0029,427 MW26,524 MW
15:0029,812 MW26,890 MW
16:0029,782 MW26,956 MW
17:0029,236 MW26,618 MW
18:0027,969 MW25,604 MW
19:0026,923 MW24,798 MW
20:0025,719 MW23,909 MW
21:0024,148 MW22,606 MW
22:0022,493 MW21,204 MW
23:0020,769 MW19,941 MW
TVA duck curve: demand and net load by local hour Average demand and net load (demand minus solar) in TVA by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 04:00 (17,502 MW) and then rose 289 MW between 14:00 to 17:00. 0 7,500 15,000 22,500 30,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average demand and net load (demand minus solar) in TVA by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 04:00 (17,502 MW) and then rose 289 MW between 14:00 to 17:00.
Mean MW by local hour, 2026-08-22 to 2026-09-19
TVA duck curve: demand and net load by local hour
Local hour (America/Chicago)DemandNet load (demand minus solar)
00:0019,536 MW19,536 MW
01:0018,595 MW18,595 MW
02:0017,914 MW17,914 MW
03:0017,541 MW17,514 MW
04:0017,502 MW17,502 MW
05:0017,934 MW17,934 MW
06:0018,445 MW18,438 MW
07:0019,125 MW18,706 MW
08:0020,567 MW19,432 MW
09:0022,407 MW20,994 MW
10:0024,472 MW22,959 MW
11:0026,388 MW24,914 MW
12:0027,880 MW26,429 MW
13:0028,783 MW26,620 MW
14:0029,427 MW28,048 MW
15:0029,812 MW28,490 MW
16:0029,782 MW28,573 MW
17:0029,236 MW28,337 MW
18:0027,969 MW26,466 MW
19:0026,923 MW26,889 MW
20:0025,719 MW25,693 MW
21:0024,148 MW24,007 MW
22:0022,493 MW22,489 MW
23:0020,769 MW20,765 MW
TVA average solar output by local hour Average solar generation in TVA by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 13:00 at 2,163 MW. 0 625 1,250 1,875 2,500 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar generation in TVA by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 13:00 at 2,163 MW.
Mean MW by local hour, 2026-08-22 to 2026-09-19
TVA average solar output by local hour
Local hour (America/Chicago)Solar
00:000 MW
01:000 MW
02:000 MW
03:0027 MW
04:000 MW
05:000 MW
06:007 MW
07:00419 MW
08:001,136 MW
09:001,413 MW
10:001,513 MW
11:001,474 MW
12:001,451 MW
13:002,163 MW
14:001,379 MW
15:001,322 MW
16:001,209 MW
17:00899 MW
18:001,504 MW
19:0033 MW
20:0026 MW
21:00142 MW
22:004 MW
23:004 MW
Average TVA demand, net generation, solar and net load by local hour
Local hourDemandNet generationSolarNet load
00:00 19,536 MW 18,868 MW 0 MW 19,536 MW
01:00 18,595 MW 17,939 MW 0 MW 18,595 MW
02:00 17,914 MW 17,294 MW 0 MW 17,914 MW
03:00 17,541 MW 16,965 MW 27 MW 17,514 MW
04:00 17,502 MW 16,931 MW 0 MW 17,502 MW
05:00 17,934 MW 17,376 MW 0 MW 17,934 MW
06:00 18,445 MW 17,814 MW 7 MW 18,438 MW
07:00 19,125 MW 18,441 MW 419 MW 18,706 MW
08:00 20,567 MW 19,624 MW 1,136 MW 19,432 MW
09:00 22,407 MW 21,256 MW 1,413 MW 20,994 MW
10:00 24,472 MW 22,927 MW 1,513 MW 22,959 MW
11:00 26,388 MW 24,398 MW 1,474 MW 24,914 MW
12:00 27,880 MW 25,585 MW 1,451 MW 26,429 MW
13:00 28,783 MW 26,068 MW 2,163 MW 26,620 MW
14:00 29,427 MW 26,524 MW 1,379 MW 28,048 MW
15:00 29,812 MW 26,890 MW 1,322 MW 28,490 MW
16:00 29,782 MW 26,956 MW 1,209 MW 28,573 MW
17:00 29,236 MW 26,618 MW 899 MW 28,337 MW
18:00 27,969 MW 25,604 MW 1,504 MW 26,466 MW
19:00 26,923 MW 24,798 MW 33 MW 26,889 MW
20:00 25,719 MW 23,909 MW 26 MW 25,693 MW
21:00 24,148 MW 22,606 MW 142 MW 24,007 MW
22:00 22,493 MW 21,204 MW 4 MW 22,489 MW
23:00 20,769 MW 19,941 MW 4 MW 20,765 MW

Each value is the mean over 29 complete local days from 22 August to 19 September 2026, weekdays and weekends together, for the hour starting at that local clock time. Net load is demand minus solar generation. Wind is left out of the net load calculation for TVA: the series is missing, reads zero, or is under 3% of average demand in this window. The single highest hour of demand in the whole 30 day window was 33,092 MW; it is a published reading, not an average, and is not part of the profile above.

Source: U.S. Energy Information Administration (EIA). (US Government work, public domain) Data as of 2026-09-19. Profiles are computed by World Power Monitor from the operator's hourly series.

Assumptions

  • Hours are local clock time in America/Chicago. A local day is used only if it is whole inside the 30 day window and at least 22 of its hours are complete; the profile uses the 29 most recent such days. Daylight saving follows the local clock: on a clock change day the missing hour is absent and the repeated hour is averaged over both readings.
  • The average mixes weekdays and weekends and covers only 29 days, so it describes recent conditions, not a seasonal norm.
  • The evening ramp is the largest rise over three hours in the average profile, starting between 14:00 and 20:00 local time.