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

IPCO 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 IPCO averaged 2,335 MW and typically peaked at 17:00 local time (2,763 MW) and bottomed out at 03:00 (1,928 MW). With solar and wind taken off, the remaining load fell to 1,491 MW at 09:00 and then rose 532 MW between 15:00 to 18:00. Hours are local clock time (America/Los_Angeles).

Key Facts

  • Over 29 complete local days from 22 August to 19 September 2026, average demand in IPCO was 2,335 MW. The hour of the day with the highest average demand was 17:00 local time (2,763 MW) and the lowest was 03:00 (1,928 MW).
  • The largest three hour rise in average demand was 138 MW, between 14:00 to 17:00 local time.
  • The single highest hour of demand in the 30 day window was 3,732 MW, in the hour starting 26 Aug 2026, 18:00 PDT (UTC-07:00).
  • Solar output averaged 694 MW at its 11:00 peak, 30% of average demand.
  • Demand minus solar and wind (net load) averaged 1,887 MW, fell to 1,491 MW at 09:00 and rose 532 MW over the three hours from 15:00 to 18:00, 23% of average demand.

Average Day by Local Hour

29 days to 2026-09-19, America/Los_Angeles time
IPCO average demand and net generation by local hour Average electricity demand in IPCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 03:00 (1,928 MW) and highest at 17:00 (2,763 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 750 1,500 2,250 3,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in IPCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 03:00 (1,928 MW) and highest at 17:00 (2,763 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
IPCO average demand and net generation by local hour
Local hour (America/Los_Angeles)DemandNet generation
00:002,039 MW1,495 MW
01:001,976 MW1,406 MW
02:001,936 MW1,347 MW
03:001,928 MW1,300 MW
04:001,969 MW1,327 MW
05:002,056 MW1,399 MW
06:002,128 MW1,477 MW
07:002,190 MW1,628 MW
08:002,247 MW1,749 MW
09:002,306 MW1,751 MW
10:002,363 MW1,774 MW
11:002,416 MW1,812 MW
12:002,488 MW1,821 MW
13:002,558 MW1,865 MW
14:002,625 MW1,939 MW
15:002,699 MW2,027 MW
16:002,756 MW2,110 MW
17:002,763 MW2,154 MW
18:002,726 MW2,045 MW
19:002,655 MW1,972 MW
20:002,542 MW1,871 MW
21:002,374 MW1,781 MW
22:002,213 MW1,690 MW
23:002,099 MW1,601 MW
IPCO duck curve: demand and net load by local hour Average demand and net load (demand minus solar and wind) in IPCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 09:00 (1,491 MW) and then rose 532 MW between 15:00 to 18:00. 0 750 1,500 2,250 3,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average demand and net load (demand minus solar and wind) in IPCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 09:00 (1,491 MW) and then rose 532 MW between 15:00 to 18:00.
Mean MW by local hour, 2026-08-22 to 2026-09-19
IPCO duck curve: demand and net load by local hour
Local hour (America/Los_Angeles)DemandNet load (demand minus solar and wind)
00:002,039 MW1,847 MW
01:001,976 MW1,795 MW
02:001,936 MW1,752 MW
03:001,928 MW1,746 MW
04:001,969 MW1,799 MW
05:002,056 MW1,888 MW
06:002,128 MW1,919 MW
07:002,190 MW1,703 MW
08:002,247 MW1,494 MW
09:002,306 MW1,491 MW
10:002,363 MW1,543 MW
11:002,416 MW1,605 MW
12:002,488 MW1,693 MW
13:002,558 MW1,761 MW
14:002,625 MW1,834 MW
15:002,699 MW1,906 MW
16:002,756 MW2,006 MW
17:002,763 MW2,189 MW
18:002,726 MW2,439 MW
19:002,655 MW2,455 MW
20:002,542 MW2,349 MW
21:002,374 MW2,179 MW
22:002,213 MW2,009 MW
23:002,099 MW1,893 MW
IPCO average solar and wind output by local hour Average solar and wind generation in IPCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 11:00 at 694 MW. 0 200 400 600 800 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar and wind generation in IPCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 11:00 at 694 MW.
Mean MW by local hour, 2026-08-22 to 2026-09-19
IPCO average solar and wind output by local hour
Local hour (America/Los_Angeles)SolarWind
00:000 MW192 MW
01:000 MW181 MW
02:000 MW185 MW
03:000 MW182 MW
04:000 MW170 MW
05:000 MW168 MW
06:0041 MW168 MW
07:00341 MW147 MW
08:00615 MW138 MW
09:00673 MW142 MW
10:00688 MW132 MW
11:00694 MW117 MW
12:00684 MW110 MW
13:00681 MW116 MW
14:00654 MW138 MW
15:00621 MW172 MW
16:00560 MW190 MW
17:00377 MW197 MW
18:00100 MW187 MW
19:002 MW198 MW
20:000 MW193 MW
21:000 MW196 MW
22:000 MW203 MW
23:000 MW206 MW
Average IPCO demand, net generation, solar, wind and net load by local hour
Local hourDemandNet generationSolarWindNet load
00:00 2,039 MW 1,495 MW 0 MW 192 MW 1,847 MW
01:00 1,976 MW 1,406 MW 0 MW 181 MW 1,795 MW
02:00 1,936 MW 1,347 MW 0 MW 185 MW 1,752 MW
03:00 1,928 MW 1,300 MW 0 MW 182 MW 1,746 MW
04:00 1,969 MW 1,327 MW 0 MW 170 MW 1,799 MW
05:00 2,056 MW 1,399 MW 0 MW 168 MW 1,888 MW
06:00 2,128 MW 1,477 MW 41 MW 168 MW 1,919 MW
07:00 2,190 MW 1,628 MW 341 MW 147 MW 1,703 MW
08:00 2,247 MW 1,749 MW 615 MW 138 MW 1,494 MW
09:00 2,306 MW 1,751 MW 673 MW 142 MW 1,491 MW
10:00 2,363 MW 1,774 MW 688 MW 132 MW 1,543 MW
11:00 2,416 MW 1,812 MW 694 MW 117 MW 1,605 MW
12:00 2,488 MW 1,821 MW 684 MW 110 MW 1,693 MW
13:00 2,558 MW 1,865 MW 681 MW 116 MW 1,761 MW
14:00 2,625 MW 1,939 MW 654 MW 138 MW 1,834 MW
15:00 2,699 MW 2,027 MW 621 MW 172 MW 1,906 MW
16:00 2,756 MW 2,110 MW 560 MW 190 MW 2,006 MW
17:00 2,763 MW 2,154 MW 377 MW 197 MW 2,189 MW
18:00 2,726 MW 2,045 MW 100 MW 187 MW 2,439 MW
19:00 2,655 MW 1,972 MW 2 MW 198 MW 2,455 MW
20:00 2,542 MW 1,871 MW 0 MW 193 MW 2,349 MW
21:00 2,374 MW 1,781 MW 0 MW 196 MW 2,179 MW
22:00 2,213 MW 1,690 MW 0 MW 203 MW 2,009 MW
23:00 2,099 MW 1,601 MW 0 MW 206 MW 1,893 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 and wind generation. The single highest hour of demand in the whole 30 day window was 3,732 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/Los_Angeles. 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.