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

SOCO 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 SOCO averaged 32,634 MW and typically peaked at 16:00 local time (40,950 MW) and bottomed out at 03:00 (24,967 MW). With solar taken off, the remaining load fell to 24,959 MW at 03:00 and then rose 1,191 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 SOCO was 32,634 MW. The hour of the day with the highest average demand was 16:00 local time (40,950 MW) and the lowest was 03:00 (24,967 MW).
  • The single highest hour of demand in the 30 day window was 45,932 MW, in the hour starting 2 Sept 2026, 16:00 CDT (UTC-05:00).
  • Solar output averaged 3,353 MW at its 12:00 peak, 10% of average demand.
  • Demand minus solar (net load) averaged 31,389 MW, fell to 24,959 MW at 03:00 and rose 1,191 MW over the three hours from 14:00 to 17:00, 4% of average demand.

Average Day by Local Hour

29 days to 2026-09-19, America/Chicago time
SOCO average demand and net generation by local hour Average electricity demand in SOCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 03:00 (24,967 MW) and highest at 16:00 (40,950 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 12,500 25,000 37,500 50,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in SOCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 03:00 (24,967 MW) and highest at 16:00 (40,950 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
SOCO average demand and net generation by local hour
Local hour (America/Chicago)DemandNet generation
00:0027,361 MW27,854 MW
01:0026,138 MW26,624 MW
02:0025,324 MW25,818 MW
03:0024,967 MW25,503 MW
04:0025,177 MW25,691 MW
05:0025,990 MW26,541 MW
06:0026,522 MW27,508 MW
07:0027,229 MW28,247 MW
08:0028,818 MW29,793 MW
09:0031,080 MW32,204 MW
10:0033,731 MW34,908 MW
11:0036,245 MW37,607 MW
12:0038,125 MW39,743 MW
13:0039,548 MW41,228 MW
14:0040,535 MW42,146 MW
15:0040,620 MW41,882 MW
16:0040,950 MW42,666 MW
17:0040,088 MW41,989 MW
18:0038,723 MW40,693 MW
19:0037,362 MW39,216 MW
20:0035,481 MW37,187 MW
21:0033,190 MW34,752 MW
22:0031,013 MW31,735 MW
23:0029,011 MW29,633 MW
SOCO duck curve: demand and net load by local hour Average demand and net load (demand minus solar) in SOCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 03:00 (24,959 MW) and then rose 1,191 MW between 14:00 to 17:00. 0 12,500 25,000 37,500 50,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average demand and net load (demand minus solar) in SOCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 03:00 (24,959 MW) and then rose 1,191 MW between 14:00 to 17:00.
Mean MW by local hour, 2026-08-22 to 2026-09-19
SOCO duck curve: demand and net load by local hour
Local hour (America/Chicago)DemandNet load (demand minus solar)
00:0027,361 MW27,354 MW
01:0026,138 MW26,131 MW
02:0025,324 MW25,317 MW
03:0024,967 MW24,959 MW
04:0025,177 MW25,169 MW
05:0025,990 MW25,983 MW
06:0026,522 MW26,404 MW
07:0027,229 MW26,121 MW
08:0028,818 MW26,428 MW
09:0031,080 MW28,194 MW
10:0033,731 MW30,556 MW
11:0036,245 MW32,929 MW
12:0038,125 MW34,772 MW
13:0039,548 MW36,214 MW
14:0040,535 MW37,410 MW
15:0040,620 MW37,890 MW
16:0040,950 MW38,483 MW
17:0040,088 MW38,601 MW
18:0038,723 MW38,403 MW
19:0037,362 MW37,342 MW
20:0035,481 MW35,466 MW
21:0033,190 MW33,182 MW
22:0031,013 MW31,009 MW
23:0029,011 MW29,011 MW
SOCO average solar output by local hour Average solar generation in SOCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 12:00 at 3,353 MW. 0 1,000 2,000 3,000 4,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar generation in SOCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 12:00 at 3,353 MW.
Mean MW by local hour, 2026-08-22 to 2026-09-19
SOCO average solar output by local hour
Local hour (America/Chicago)Solar
00:007 MW
01:007 MW
02:007 MW
03:007 MW
04:007 MW
05:007 MW
06:00118 MW
07:001,108 MW
08:002,390 MW
09:002,885 MW
10:003,175 MW
11:003,316 MW
12:003,353 MW
13:003,334 MW
14:003,124 MW
15:002,729 MW
16:002,466 MW
17:001,487 MW
18:00320 MW
19:0020 MW
20:0015 MW
21:007 MW
22:004 MW
23:000 MW
Average SOCO demand, net generation, solar and net load by local hour
Local hourDemandNet generationSolarNet load
00:00 27,361 MW 27,854 MW 7 MW 27,354 MW
01:00 26,138 MW 26,624 MW 7 MW 26,131 MW
02:00 25,324 MW 25,818 MW 7 MW 25,317 MW
03:00 24,967 MW 25,503 MW 7 MW 24,959 MW
04:00 25,177 MW 25,691 MW 7 MW 25,169 MW
05:00 25,990 MW 26,541 MW 7 MW 25,983 MW
06:00 26,522 MW 27,508 MW 118 MW 26,404 MW
07:00 27,229 MW 28,247 MW 1,108 MW 26,121 MW
08:00 28,818 MW 29,793 MW 2,390 MW 26,428 MW
09:00 31,080 MW 32,204 MW 2,885 MW 28,194 MW
10:00 33,731 MW 34,908 MW 3,175 MW 30,556 MW
11:00 36,245 MW 37,607 MW 3,316 MW 32,929 MW
12:00 38,125 MW 39,743 MW 3,353 MW 34,772 MW
13:00 39,548 MW 41,228 MW 3,334 MW 36,214 MW
14:00 40,535 MW 42,146 MW 3,124 MW 37,410 MW
15:00 40,620 MW 41,882 MW 2,729 MW 37,890 MW
16:00 40,950 MW 42,666 MW 2,466 MW 38,483 MW
17:00 40,088 MW 41,989 MW 1,487 MW 38,601 MW
18:00 38,723 MW 40,693 MW 320 MW 38,403 MW
19:00 37,362 MW 39,216 MW 20 MW 37,342 MW
20:00 35,481 MW 37,187 MW 15 MW 35,466 MW
21:00 33,190 MW 34,752 MW 7 MW 33,182 MW
22:00 31,013 MW 31,735 MW 4 MW 31,009 MW
23:00 29,011 MW 29,633 MW 0 MW 29,011 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 SOCO: 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 45,932 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.