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

SC 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 SC averaged 2,997 MW and typically peaked at 17:00 local time (3,383 MW) and bottomed out at 03:00 (2,551 MW). With solar taken off, the remaining load fell to 2,551 MW at 03:00 and then rose 340 MW between 15:00 to 18:00. Hours are local clock time (America/New_York).

Key Facts

  • Over 29 complete local days from 29 September to 27 October 2026, average demand in SC was 2,997 MW. The hour of the day with the highest average demand was 17:00 local time (3,383 MW) and the lowest was 03:00 (2,551 MW).
  • The largest three hour rise in average demand was 76 MW, between 14:00 to 17:00 local time.
  • The single highest hour of demand in the 30 day window was 4,278 MW, in the hour starting 2 Oct 2026, 16:00 EDT (UTC-04:00).
  • Solar output averaged 343 MW at its 11:00 peak, 11% of average demand.
  • Demand minus solar (net load) averaged 2,879 MW, fell to 2,551 MW at 03:00 and rose 340 MW over the three hours from 15:00 to 18:00, 11% of average demand.

Average Day by Local Hour

29 days to 2026-10-27, America/New_York time
SC average demand and net generation by local hour Average electricity demand in SC by local clock hour over 29 complete local days from 29 September to 27 October 2026. It was lowest at 03:00 (2,551 MW) and highest at 17:00 (3,383 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 1,000 2,000 3,000 4,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in SC by local clock hour over 29 complete local days from 29 September to 27 October 2026. It was lowest at 03:00 (2,551 MW) and highest at 17:00 (3,383 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
SC average demand and net generation by local hour
Local hour (America/New_York)DemandNet generation
00:002,695 MW1,564 MW
01:002,565 MW1,438 MW
02:002,559 MW1,427 MW
03:002,551 MW1,410 MW
04:002,574 MW1,441 MW
05:002,638 MW1,495 MW
06:002,768 MW1,612 MW
07:002,836 MW1,701 MW
08:002,910 MW1,783 MW
09:002,981 MW1,873 MW
10:003,030 MW1,929 MW
11:003,086 MW1,964 MW
12:003,173 MW2,045 MW
13:003,252 MW2,119 MW
14:003,307 MW2,148 MW
15:003,329 MW2,137 MW
16:003,367 MW2,147 MW
17:003,383 MW2,104 MW
18:003,379 MW2,058 MW
19:003,358 MW2,038 MW
20:003,256 MW1,970 MW
21:003,132 MW1,908 MW
22:002,983 MW1,838 MW
23:002,820 MW1,698 MW
SC duck curve: demand and net load by local hour Average demand and net load (demand minus solar) in SC by local clock hour over 29 complete local days from 29 September to 27 October 2026. Net load was lowest at 03:00 (2,551 MW) and then rose 340 MW between 15:00 to 18:00. 0 1,000 2,000 3,000 4,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average demand and net load (demand minus solar) in SC by local clock hour over 29 complete local days from 29 September to 27 October 2026. Net load was lowest at 03:00 (2,551 MW) and then rose 340 MW between 15:00 to 18:00.
Mean MW by local hour, 2026-09-29 to 2026-10-27
SC duck curve: demand and net load by local hour
Local hour (America/New_York)DemandNet load (demand minus solar)
00:002,695 MW2,695 MW
01:002,565 MW2,565 MW
02:002,559 MW2,559 MW
03:002,551 MW2,551 MW
04:002,574 MW2,574 MW
05:002,638 MW2,638 MW
06:002,768 MW2,768 MW
07:002,836 MW2,829 MW
08:002,910 MW2,790 MW
09:002,981 MW2,701 MW
10:003,030 MW2,703 MW
11:003,086 MW2,743 MW
12:003,173 MW2,836 MW
13:003,252 MW2,922 MW
14:003,307 MW2,986 MW
15:003,329 MW3,019 MW
16:003,367 MW3,079 MW
17:003,383 MW3,229 MW
18:003,379 MW3,359 MW
19:003,358 MW3,358 MW
20:003,256 MW3,256 MW
21:003,132 MW3,132 MW
22:002,983 MW2,983 MW
23:002,820 MW2,820 MW
SC average solar output by local hour Average solar generation in SC by local clock hour over 29 complete local days from 29 September to 27 October 2026. Solar peaked at 11:00 at 343 MW. 0 100 200 300 400 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar generation in SC by local clock hour over 29 complete local days from 29 September to 27 October 2026. Solar peaked at 11:00 at 343 MW.
Mean MW by local hour, 2026-09-29 to 2026-10-27
SC average solar output by local hour
Local hour (America/New_York)Solar
00:000 MW
01:000 MW
02:000 MW
03:000 MW
04:000 MW
05:000 MW
06:000 MW
07:007 MW
08:00121 MW
09:00280 MW
10:00327 MW
11:00343 MW
12:00337 MW
13:00330 MW
14:00321 MW
15:00311 MW
16:00289 MW
17:00155 MW
18:0021 MW
19:000 MW
20:000 MW
21:000 MW
22:000 MW
23:000 MW
Average SC demand, net generation, solar and net load by local hour
Local hourDemandNet generationSolarNet load
00:00 2,695 MW 1,564 MW 0 MW 2,695 MW
01:00 2,565 MW 1,438 MW 0 MW 2,565 MW
02:00 2,559 MW 1,427 MW 0 MW 2,559 MW
03:00 2,551 MW 1,410 MW 0 MW 2,551 MW
04:00 2,574 MW 1,441 MW 0 MW 2,574 MW
05:00 2,638 MW 1,495 MW 0 MW 2,638 MW
06:00 2,768 MW 1,612 MW 0 MW 2,768 MW
07:00 2,836 MW 1,701 MW 7 MW 2,829 MW
08:00 2,910 MW 1,783 MW 121 MW 2,790 MW
09:00 2,981 MW 1,873 MW 280 MW 2,701 MW
10:00 3,030 MW 1,929 MW 327 MW 2,703 MW
11:00 3,086 MW 1,964 MW 343 MW 2,743 MW
12:00 3,173 MW 2,045 MW 337 MW 2,836 MW
13:00 3,252 MW 2,119 MW 330 MW 2,922 MW
14:00 3,307 MW 2,148 MW 321 MW 2,986 MW
15:00 3,329 MW 2,137 MW 311 MW 3,019 MW
16:00 3,367 MW 2,147 MW 289 MW 3,079 MW
17:00 3,383 MW 2,104 MW 155 MW 3,229 MW
18:00 3,379 MW 2,058 MW 21 MW 3,359 MW
19:00 3,358 MW 2,038 MW 0 MW 3,358 MW
20:00 3,256 MW 1,970 MW 0 MW 3,256 MW
21:00 3,132 MW 1,908 MW 0 MW 3,132 MW
22:00 2,983 MW 1,838 MW 0 MW 2,983 MW
23:00 2,820 MW 1,698 MW 0 MW 2,820 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 generation. The single highest hour of demand in the whole 30 day window was 4,278 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/New_York. 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). SC Daily Load Shape and Duck Curve by Hour. https://worldpowermonitor.com/load-shapes/sc/

Plain text

World Power Monitor. SC 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/sc/

BibTeX 
@misc{wpm_load_shapes_sc_2026,
  title = {{SC 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/sc/}
}

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