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

DUK 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 DUK averaged 14,427 MW and typically peaked at 16:00 local time (18,565 MW) and bottomed out at 04:00 (10,558 MW). With solar taken off, the remaining load fell to 10,558 MW at 04:00 and then rose 924 MW between 14:00 to 17:00. Hours are local clock time (America/New_York).

Key Facts

  • Over 29 complete local days from 22 August to 19 September 2026, average demand in DUK was 14,427 MW. The hour of the day with the highest average demand was 16:00 local time (18,565 MW) and the lowest was 04:00 (10,558 MW).
  • The largest three hour rise in average demand was 547 MW, between 14:00 to 17:00 local time.
  • The single highest hour of demand in the 30 day window was 21,833 MW, in the hour starting 3 Sept 2026, 16:00 EDT (UTC-04:00).
  • Solar output averaged 886 MW at its 12:00 peak, 6% of average demand.
  • Demand minus solar (net load) averaged 14,131 MW, fell to 10,558 MW at 04:00 and rose 924 MW over the three hours from 14:00 to 17:00, 6% of average demand.

Average Day by Local Hour

29 days to 2026-09-19, America/New_York time
DUK average demand and net generation by local hour Average electricity demand in DUK by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 04:00 (10,558 MW) and highest at 16:00 (18,565 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 5,000 10,000 15,000 20,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in DUK by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 04:00 (10,558 MW) and highest at 16:00 (18,565 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
DUK average demand and net generation by local hour
Local hour (America/New_York)DemandNet generation
00:0012,174 MW12,535 MW
01:0011,483 MW11,585 MW
02:0010,957 MW10,858 MW
03:0010,638 MW10,485 MW
04:0010,558 MW10,371 MW
05:0010,813 MW10,582 MW
06:0011,363 MW11,125 MW
07:0011,681 MW11,175 MW
08:0012,263 MW11,476 MW
09:0013,080 MW11,992 MW
10:0014,105 MW12,885 MW
11:0015,239 MW13,936 MW
12:0016,359 MW15,108 MW
13:0017,312 MW16,181 MW
14:0017,950 MW16,997 MW
15:0018,373 MW17,624 MW
16:0018,565 MW18,099 MW
17:0018,496 MW18,450 MW
18:0018,027 MW18,418 MW
19:0017,250 MW17,805 MW
20:0016,569 MW17,152 MW
21:0015,542 MW15,903 MW
22:0014,312 MW14,473 MW
23:0013,136 MW13,475 MW
DUK duck curve: demand and net load by local hour Average demand and net load (demand minus solar) in DUK by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 04:00 (10,558 MW) and then rose 924 MW between 14:00 to 17:00. 0 5,000 10,000 15,000 20,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average demand and net load (demand minus solar) in DUK by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 04:00 (10,558 MW) and then rose 924 MW between 14:00 to 17:00.
Mean MW by local hour, 2026-08-22 to 2026-09-19
DUK duck curve: demand and net load by local hour
Local hour (America/New_York)DemandNet load (demand minus solar)
00:0012,174 MW12,174 MW
01:0011,483 MW11,483 MW
02:0010,957 MW10,957 MW
03:0010,638 MW10,638 MW
04:0010,558 MW10,558 MW
05:0010,813 MW10,813 MW
06:0011,363 MW11,363 MW
07:0011,681 MW11,637 MW
08:0012,263 MW11,982 MW
09:0013,080 MW12,532 MW
10:0014,105 MW13,385 MW
11:0015,239 MW14,398 MW
12:0016,359 MW15,473 MW
13:0017,312 MW16,443 MW
14:0017,950 MW17,113 MW
15:0018,373 MW17,618 MW
16:0018,565 MW17,924 MW
17:0018,496 MW18,038 MW
18:0018,027 MW17,829 MW
19:0017,250 MW17,223 MW
20:0016,569 MW16,568 MW
21:0015,542 MW15,542 MW
22:0014,312 MW14,312 MW
23:0013,136 MW13,136 MW
DUK average solar output by local hour Average solar generation in DUK by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 12:00 at 886 MW. 0 250 500 750 1,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar generation in DUK by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 12:00 at 886 MW.
Mean MW by local hour, 2026-08-22 to 2026-09-19
DUK 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
07:0044 MW
08:00281 MW
09:00548 MW
10:00721 MW
11:00841 MW
12:00886 MW
13:00869 MW
14:00836 MW
15:00755 MW
16:00642 MW
17:00459 MW
18:00197 MW
19:0027 MW
20:001 MW
21:000 MW
22:000 MW
23:000 MW
Average DUK demand, net generation, solar and net load by local hour
Local hourDemandNet generationSolarNet load
00:00 12,174 MW 12,535 MW 0 MW 12,174 MW
01:00 11,483 MW 11,585 MW 0 MW 11,483 MW
02:00 10,957 MW 10,858 MW 0 MW 10,957 MW
03:00 10,638 MW 10,485 MW 0 MW 10,638 MW
04:00 10,558 MW 10,371 MW 0 MW 10,558 MW
05:00 10,813 MW 10,582 MW 0 MW 10,813 MW
06:00 11,363 MW 11,125 MW 0 MW 11,363 MW
07:00 11,681 MW 11,175 MW 44 MW 11,637 MW
08:00 12,263 MW 11,476 MW 281 MW 11,982 MW
09:00 13,080 MW 11,992 MW 548 MW 12,532 MW
10:00 14,105 MW 12,885 MW 721 MW 13,385 MW
11:00 15,239 MW 13,936 MW 841 MW 14,398 MW
12:00 16,359 MW 15,108 MW 886 MW 15,473 MW
13:00 17,312 MW 16,181 MW 869 MW 16,443 MW
14:00 17,950 MW 16,997 MW 836 MW 17,113 MW
15:00 18,373 MW 17,624 MW 755 MW 17,618 MW
16:00 18,565 MW 18,099 MW 642 MW 17,924 MW
17:00 18,496 MW 18,450 MW 459 MW 18,038 MW
18:00 18,027 MW 18,418 MW 197 MW 17,829 MW
19:00 17,250 MW 17,805 MW 27 MW 17,223 MW
20:00 16,569 MW 17,152 MW 1 MW 16,568 MW
21:00 15,542 MW 15,903 MW 0 MW 15,542 MW
22:00 14,312 MW 14,473 MW 0 MW 14,312 MW
23:00 13,136 MW 13,475 MW 0 MW 13,136 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. The single highest hour of demand in the whole 30 day window was 21,833 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/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.