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

NYISO Daily Electricity Demand by Hour of Day, 29 September to 27 October 2026

In the 29 complete local days from 29 September to 27 October 2026, electricity demand in NYISO averaged 14,769 MW and typically peaked at 18:00 local time (17,430 MW) and bottomed out at 03:00 (12,827 MW). 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 NYISO was 14,769 MW. The hour of the day with the highest average demand was 18:00 local time (17,430 MW) and the lowest was 03:00 (12,827 MW).
  • The largest three hour rise in average demand was 2,780 MW, between 15:00 to 18:00 local time.
  • The single highest hour of demand in the 30 day window was 20,194 MW, in the hour starting 2 Oct 2026, 17:00 EDT (UTC-04:00).

Average Day by Local Hour

29 days to 2026-10-27, America/New_York time
NYISO average demand and net generation by local hour Average electricity demand in NYISO by local clock hour over 29 complete local days from 29 September to 27 October 2026. It was lowest at 03:00 (12,827 MW) and highest at 18:00 (17,430 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 NYISO by local clock hour over 29 complete local days from 29 September to 27 October 2026. It was lowest at 03:00 (12,827 MW) and highest at 18:00 (17,430 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
NYISO average demand and net generation by local hour
Local hour (America/New_York)DemandNet generation
00:0013,830 MW11,778 MW
01:0013,321 MW11,258 MW
02:0012,987 MW10,958 MW
03:0012,827 MW10,851 MW
04:0012,931 MW11,044 MW
05:0013,505 MW11,743 MW
06:0014,652 MW12,875 MW
07:0015,497 MW13,846 MW
08:0015,342 MW13,728 MW
09:0014,612 MW12,912 MW
10:0014,129 MW12,383 MW
11:0013,931 MW12,119 MW
12:0013,866 MW12,044 MW
13:0013,926 MW12,151 MW
14:0014,110 MW12,328 MW
15:0014,650 MW12,894 MW
16:0015,659 MW13,869 MW
17:0016,829 MW14,833 MW
18:0017,430 MW15,443 MW
19:0017,428 MW15,546 MW
20:0016,919 MW15,061 MW
21:0016,227 MW14,275 MW
22:0015,367 MW13,378 MW
23:0014,480 MW12,393 MW
NYISO average wind output by local hour Average wind generation in NYISO by local clock hour over 29 complete local days from 29 September to 27 October 2026. 0 250 500 750 1,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average wind generation in NYISO by local clock hour over 29 complete local days from 29 September to 27 October 2026.
Mean MW by local hour, 2026-09-29 to 2026-10-27
NYISO average wind output by local hour
Local hour (America/New_York)Wind
00:00814 MW
01:00784 MW
02:00770 MW
03:00769 MW
04:00771 MW
05:00781 MW
06:00790 MW
07:00798 MW
08:00752 MW
09:00678 MW
10:00643 MW
11:00639 MW
12:00630 MW
13:00637 MW
14:00662 MW
15:00661 MW
16:00649 MW
17:00585 MW
18:00581 MW
19:00679 MW
20:00762 MW
21:00790 MW
22:00819 MW
23:00840 MW
Average NYISO demand, net generation, wind by local hour
Local hourDemandNet generationWind
00:00 13,830 MW 11,778 MW 814 MW
01:00 13,321 MW 11,258 MW 784 MW
02:00 12,987 MW 10,958 MW 770 MW
03:00 12,827 MW 10,851 MW 769 MW
04:00 12,931 MW 11,044 MW 771 MW
05:00 13,505 MW 11,743 MW 781 MW
06:00 14,652 MW 12,875 MW 790 MW
07:00 15,497 MW 13,846 MW 798 MW
08:00 15,342 MW 13,728 MW 752 MW
09:00 14,612 MW 12,912 MW 678 MW
10:00 14,129 MW 12,383 MW 643 MW
11:00 13,931 MW 12,119 MW 639 MW
12:00 13,866 MW 12,044 MW 630 MW
13:00 13,926 MW 12,151 MW 637 MW
14:00 14,110 MW 12,328 MW 662 MW
15:00 14,650 MW 12,894 MW 661 MW
16:00 15,659 MW 13,869 MW 649 MW
17:00 16,829 MW 14,833 MW 585 MW
18:00 17,430 MW 15,443 MW 581 MW
19:00 17,428 MW 15,546 MW 679 MW
20:00 16,919 MW 15,061 MW 762 MW
21:00 16,227 MW 14,275 MW 790 MW
22:00 15,367 MW 13,378 MW 819 MW
23:00 14,480 MW 12,393 MW 840 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. Solar is left out of the net load calculation for NYISO: 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 20,194 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). NYISO Daily Electricity Demand by Hour of Day. https://worldpowermonitor.com/load-shapes/nyiso/

Plain text

World Power Monitor. NYISO Daily Electricity Demand by Hour of Day. Data as of 2026-10-27. Data from U.S. Energy Information Administration. https://worldpowermonitor.com/load-shapes/nyiso/

BibTeX 
@misc{wpm_load_shapes_nyiso_2026,
  title = {{NYISO Daily Electricity Demand by Hour of Day}},
  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/nyiso/}
}

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