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

SRP 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 SRP averaged 3,520 MW and typically peaked at 16:00 local time (4,282 MW) and bottomed out at 03:00 (2,744 MW). With solar and wind taken off, the remaining load fell to 2,507 MW at 09:00 and then rose 542 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 SRP was 3,520 MW. The hour of the day with the highest average demand was 16:00 local time (4,282 MW) and the lowest was 03:00 (2,744 MW).
  • The largest three hour rise in average demand was 99 MW, between 14:00 to 17:00 local time.
  • The single highest hour of demand in the 30 day window was 6,539 MW, in the hour starting 8 Oct 2026, 15:00 MST (UTC-07:00).
  • Solar output averaged 940 MW at its 14:00 peak, 27% of average demand.
  • Demand minus solar and wind (net load) averaged 3,032 MW, fell to 2,507 MW at 09:00 and rose 542 MW over the three hours from 14:00 to 17:00, 15% of average demand.

Average Day by Local Hour

29 days to 2026-10-27, America/Phoenix time
SRP average demand and net generation by local hour Average electricity demand in SRP by local clock hour over 29 complete local days from 29 September to 27 October 2026. It was lowest at 03:00 (2,744 MW) and highest at 16:00 (4,282 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 2,000 4,000 6,000 8,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in SRP by local clock hour over 29 complete local days from 29 September to 27 October 2026. It was lowest at 03:00 (2,744 MW) and highest at 16:00 (4,282 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
SRP average demand and net generation by local hour
Local hour (America/Phoenix)DemandNet generation
00:003,210 MW6,807 MW
01:002,988 MW6,648 MW
02:002,807 MW6,512 MW
03:002,744 MW6,421 MW
04:002,785 MW6,373 MW
05:002,864 MW6,469 MW
06:002,953 MW6,554 MW
07:003,115 MW6,725 MW
08:003,233 MW6,205 MW
09:003,323 MW6,047 MW
10:003,468 MW6,135 MW
11:003,652 MW6,350 MW
12:003,862 MW6,654 MW
13:004,015 MW6,838 MW
14:004,121 MW6,937 MW
15:004,181 MW6,932 MW
16:004,282 MW7,250 MW
17:004,220 MW7,721 MW
18:004,105 MW7,710 MW
19:003,943 MW7,729 MW
20:003,927 MW7,704 MW
21:003,735 MW7,414 MW
22:003,540 MW7,171 MW
23:003,406 MW6,960 MW
SRP duck curve: demand and net load by local hour Average demand and net load (demand minus solar and wind) in SRP by local clock hour over 29 complete local days from 29 September to 27 October 2026. Net load was lowest at 09:00 (2,507 MW) and then rose 542 MW between 14:00 to 17:00. 0 1,250 2,500 3,750 5,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average demand and net load (demand minus solar and wind) in SRP by local clock hour over 29 complete local days from 29 September to 27 October 2026. Net load was lowest at 09:00 (2,507 MW) and then rose 542 MW between 14:00 to 17:00.
Mean MW by local hour, 2026-09-29 to 2026-10-27
SRP duck curve: demand and net load by local hour
Local hour (America/Phoenix)DemandNet load (demand minus solar and wind)
00:003,210 MW3,102 MW
01:002,988 MW2,900 MW
02:002,807 MW2,730 MW
03:002,744 MW2,678 MW
04:002,785 MW2,724 MW
05:002,864 MW2,797 MW
06:002,953 MW2,879 MW
07:003,115 MW2,709 MW
08:003,233 MW2,535 MW
09:003,323 MW2,507 MW
10:003,468 MW2,612 MW
11:003,652 MW2,755 MW
12:003,862 MW2,906 MW
13:004,015 MW3,022 MW
14:004,121 MW3,081 MW
15:004,181 MW3,174 MW
16:004,282 MW3,418 MW
17:004,220 MW3,623 MW
18:004,105 MW3,659 MW
19:003,943 MW3,514 MW
20:003,927 MW3,485 MW
21:003,735 MW3,435 MW
22:003,540 MW3,300 MW
23:003,406 MW3,215 MW
SRP average solar and wind output by local hour Average solar and wind generation in SRP by local clock hour over 29 complete local days from 29 September to 27 October 2026. Solar peaked at 14:00 at 940 MW. 0 250 500 750 1,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar and wind generation in SRP by local clock hour over 29 complete local days from 29 September to 27 October 2026. Solar peaked at 14:00 at 940 MW.
Mean MW by local hour, 2026-09-29 to 2026-10-27
SRP average solar and wind output by local hour
Local hour (America/Phoenix)SolarWind
00:0045 MW63 MW
01:0023 MW64 MW
02:008 MW69 MW
03:004 MW61 MW
04:000 MW61 MW
05:003 MW64 MW
06:008 MW66 MW
07:00340 MW66 MW
08:00632 MW66 MW
09:00746 MW70 MW
10:00779 MW78 MW
11:00803 MW93 MW
12:00852 MW104 MW
13:00888 MW106 MW
14:00940 MW100 MW
15:00908 MW99 MW
16:00770 MW93 MW
17:00510 MW87 MW
18:00369 MW77 MW
19:00363 MW67 MW
20:00381 MW61 MW
21:00235 MW65 MW
22:00174 MW66 MW
23:00123 MW68 MW
Average SRP demand, net generation, solar, wind and net load by local hour
Local hourDemandNet generationSolarWindNet load
00:00 3,210 MW 6,807 MW 45 MW 63 MW 3,102 MW
01:00 2,988 MW 6,648 MW 23 MW 64 MW 2,900 MW
02:00 2,807 MW 6,512 MW 8 MW 69 MW 2,730 MW
03:00 2,744 MW 6,421 MW 4 MW 61 MW 2,678 MW
04:00 2,785 MW 6,373 MW 0 MW 61 MW 2,724 MW
05:00 2,864 MW 6,469 MW 3 MW 64 MW 2,797 MW
06:00 2,953 MW 6,554 MW 8 MW 66 MW 2,879 MW
07:00 3,115 MW 6,725 MW 340 MW 66 MW 2,709 MW
08:00 3,233 MW 6,205 MW 632 MW 66 MW 2,535 MW
09:00 3,323 MW 6,047 MW 746 MW 70 MW 2,507 MW
10:00 3,468 MW 6,135 MW 779 MW 78 MW 2,612 MW
11:00 3,652 MW 6,350 MW 803 MW 93 MW 2,755 MW
12:00 3,862 MW 6,654 MW 852 MW 104 MW 2,906 MW
13:00 4,015 MW 6,838 MW 888 MW 106 MW 3,022 MW
14:00 4,121 MW 6,937 MW 940 MW 100 MW 3,081 MW
15:00 4,181 MW 6,932 MW 908 MW 99 MW 3,174 MW
16:00 4,282 MW 7,250 MW 770 MW 93 MW 3,418 MW
17:00 4,220 MW 7,721 MW 510 MW 87 MW 3,623 MW
18:00 4,105 MW 7,710 MW 369 MW 77 MW 3,659 MW
19:00 3,943 MW 7,729 MW 363 MW 67 MW 3,514 MW
20:00 3,927 MW 7,704 MW 381 MW 61 MW 3,485 MW
21:00 3,735 MW 7,414 MW 235 MW 65 MW 3,435 MW
22:00 3,540 MW 7,171 MW 174 MW 66 MW 3,300 MW
23:00 3,406 MW 6,960 MW 123 MW 68 MW 3,215 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 6,539 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). SRP Daily Load Shape and Duck Curve by Hour. https://worldpowermonitor.com/load-shapes/srp/

Plain text

World Power Monitor. SRP 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/srp/

BibTeX 
@misc{wpm_load_shapes_srp_2026,
  title = {{SRP 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/srp/}
}

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