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Data as of 2026-10-27
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Built 2026-10-28 (28 October 2026)

TEPC Daily Load Shape and Duck Curve by Hour, 29 September to 27 October 2026

In the 29 complete local days from 29 September to 27 October 2026, electricity demand in TEPC averaged 1,598 MW and typically peaked at 17:00 local time (1,941 MW) and bottomed out at 03:00 (1,364 MW). With solar and wind taken off, the remaining load fell to 847 MW at 10:00 and then rose 576 MW between 14:00 to 17:00. Hours are local clock time (America/Phoenix).

Key Facts

  • Over 29 complete local days from 29 September to 27 October 2026, average demand in TEPC was 1,598 MW. The hour of the day with the highest average demand was 17:00 local time (1,941 MW) and the lowest was 03:00 (1,364 MW).
  • The largest three hour rise in average demand was 192 MW, between 14:00 to 17:00 local time.
  • The single highest hour of demand in the 30 day window was 2,518 MW, in the hour starting 8 Oct 2026, 16:00 MST (UTC-07:00).
  • Solar output averaged 485 MW at its 12:00 peak, 30% of average demand.
  • Demand minus solar and wind (net load) averaged 1,314 MW, fell to 847 MW at 10:00 and rose 576 MW over the three hours from 14:00 to 17:00, 36% of average demand.

Average Day by Local Hour

29 days to 2026-10-27, America/Phoenix time
TEPC average demand and net generation by local hour Average electricity demand in TEPC by local clock hour over 29 complete local days from 29 September to 27 October 2026. It was lowest at 03:00 (1,364 MW) and highest at 17:00 (1,941 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 500 1,000 1,500 2,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in TEPC by local clock hour over 29 complete local days from 29 September to 27 October 2026. It was lowest at 03:00 (1,364 MW) and highest at 17:00 (1,941 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports.
Mean MW by local hour, 2026-09-29 to 2026-10-27
TEPC average demand and net generation by local hour
Local hour (America/Phoenix)DemandNet generation
00:001,465 MW1,495 MW
01:001,411 MW1,467 MW
02:001,379 MW1,456 MW
03:001,364 MW1,442 MW
04:001,375 MW1,444 MW
05:001,420 MW1,468 MW
06:001,461 MW1,474 MW
07:001,488 MW1,458 MW
08:001,448 MW1,258 MW
09:001,425 MW1,180 MW
10:001,420 MW1,164 MW
11:001,492 MW1,284 MW
12:001,542 MW1,372 MW
13:001,653 MW1,450 MW
14:001,750 MW1,502 MW
15:001,855 MW1,529 MW
16:001,936 MW1,660 MW
17:001,941 MW1,821 MW
18:001,924 MW1,894 MW
19:001,870 MW1,862 MW
20:001,807 MW1,786 MW
21:001,737 MW1,737 MW
22:001,632 MW1,666 MW
23:001,551 MW1,568 MW
TEPC duck curve: demand and net load by local hour Average demand and net load (demand minus solar and wind) in TEPC by local clock hour over 29 complete local days from 29 September to 27 October 2026. Net load was lowest at 10:00 (847 MW) and then rose 576 MW between 14:00 to 17:00. 0 500 1,000 1,500 2,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average demand and net load (demand minus solar and wind) in TEPC by local clock hour over 29 complete local days from 29 September to 27 October 2026. Net load was lowest at 10:00 (847 MW) and then rose 576 MW between 14:00 to 17:00.
Mean MW by local hour, 2026-09-29 to 2026-10-27
TEPC duck curve: demand and net load by local hour
Local hour (America/Phoenix)DemandNet load (demand minus solar and wind)
00:001,465 MW1,358 MW
01:001,411 MW1,304 MW
02:001,379 MW1,260 MW
03:001,364 MW1,246 MW
04:001,375 MW1,257 MW
05:001,420 MW1,303 MW
06:001,461 MW1,347 MW
07:001,488 MW1,182 MW
08:001,448 MW930 MW
09:001,425 MW860 MW
10:001,420 MW847 MW
11:001,492 MW910 MW
12:001,542 MW955 MW
13:001,653 MW1,068 MW
14:001,750 MW1,190 MW
15:001,855 MW1,340 MW
16:001,936 MW1,541 MW
17:001,941 MW1,765 MW
18:001,924 MW1,813 MW
19:001,870 MW1,772 MW
20:001,807 MW1,707 MW
21:001,737 MW1,625 MW
22:001,632 MW1,522 MW
23:001,551 MW1,443 MW
TEPC average solar and wind output by local hour Average solar and wind generation in TEPC by local clock hour over 29 complete local days from 29 September to 27 October 2026. Solar peaked at 12:00 at 485 MW. 0 125 250 375 500 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar and wind generation in TEPC by local clock hour over 29 complete local days from 29 September to 27 October 2026. Solar peaked at 12:00 at 485 MW.
Mean MW by local hour, 2026-09-29 to 2026-10-27
TEPC average solar and wind output by local hour
Local hour (America/Phoenix)SolarWind
00:000 MW107 MW
01:000 MW107 MW
02:000 MW120 MW
03:000 MW118 MW
04:000 MW118 MW
05:000 MW118 MW
06:0010 MW104 MW
07:00208 MW99 MW
08:00424 MW95 MW
09:00470 MW95 MW
10:00473 MW100 MW
11:00481 MW102 MW
12:00485 MW102 MW
13:00484 MW102 MW
14:00457 MW103 MW
15:00410 MW104 MW
16:00290 MW105 MW
17:0072 MW104 MW
18:008 MW103 MW
19:000 MW98 MW
20:000 MW100 MW
21:000 MW111 MW
22:000 MW111 MW
23:000 MW108 MW
Average TEPC demand, net generation, solar, wind and net load by local hour
Local hourDemandNet generationSolarWindNet load
00:00 1,465 MW 1,495 MW 0 MW 107 MW 1,358 MW
01:00 1,411 MW 1,467 MW 0 MW 107 MW 1,304 MW
02:00 1,379 MW 1,456 MW 0 MW 120 MW 1,260 MW
03:00 1,364 MW 1,442 MW 0 MW 118 MW 1,246 MW
04:00 1,375 MW 1,444 MW 0 MW 118 MW 1,257 MW
05:00 1,420 MW 1,468 MW 0 MW 118 MW 1,303 MW
06:00 1,461 MW 1,474 MW 10 MW 104 MW 1,347 MW
07:00 1,488 MW 1,458 MW 208 MW 99 MW 1,182 MW
08:00 1,448 MW 1,258 MW 424 MW 95 MW 930 MW
09:00 1,425 MW 1,180 MW 470 MW 95 MW 860 MW
10:00 1,420 MW 1,164 MW 473 MW 100 MW 847 MW
11:00 1,492 MW 1,284 MW 481 MW 102 MW 910 MW
12:00 1,542 MW 1,372 MW 485 MW 102 MW 955 MW
13:00 1,653 MW 1,450 MW 484 MW 102 MW 1,068 MW
14:00 1,750 MW 1,502 MW 457 MW 103 MW 1,190 MW
15:00 1,855 MW 1,529 MW 410 MW 104 MW 1,340 MW
16:00 1,936 MW 1,660 MW 290 MW 105 MW 1,541 MW
17:00 1,941 MW 1,821 MW 72 MW 104 MW 1,765 MW
18:00 1,924 MW 1,894 MW 8 MW 103 MW 1,813 MW
19:00 1,870 MW 1,862 MW 0 MW 98 MW 1,772 MW
20:00 1,807 MW 1,786 MW 0 MW 100 MW 1,707 MW
21:00 1,737 MW 1,737 MW 0 MW 111 MW 1,625 MW
22:00 1,632 MW 1,666 MW 0 MW 111 MW 1,522 MW
23:00 1,551 MW 1,568 MW 0 MW 108 MW 1,443 MW

Each value is the mean over 29 complete local days from 29 September to 27 October 2026, weekdays and weekends together, for the hour starting at that local clock time. Net load is demand minus solar and wind generation. The single highest hour of demand in the whole 30 day window was 2,518 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 2026-10-27. Profiles are computed by World Power Monitor from the operator's hourly series.

Assumptions

  • Hours are local clock time in America/Phoenix. 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.
Cite this page
APA 7

World Power Monitor. (2026). TEPC Daily Load Shape and Duck Curve by Hour. https://worldpowermonitor.com/load-shapes/tepc/

Plain text

World Power Monitor. TEPC Daily Load Shape and Duck Curve by Hour. Data as of 2026-10-27. Data from U.S. Energy Information Administration. https://worldpowermonitor.com/load-shapes/tepc/

BibTeX 
@misc{wpm_load_shapes_tepc_2026,
  title = {{TEPC Daily Load Shape and Duck Curve by Hour}},
  author = {{World Power Monitor}},
  year = {2026},
  note = {Data as of 2026-10-27. Data from U.S. Energy Information Administration.},
  url = {https://worldpowermonitor.com/load-shapes/tepc/}
}

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