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

SEC Daily Electricity Demand by Hour of Day, 22 August to 19 September 2026

In the 29 complete local days from 22 August to 19 September 2026, electricity demand in SEC averaged 257 MW and typically peaked at 15:00 local time (344 MW) and bottomed out at 03:00 (177 MW). 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 SEC was 257 MW. The hour of the day with the highest average demand was 15:00 local time (344 MW) and the lowest was 03:00 (177 MW).
  • The single highest hour of demand in the 30 day window was 748 MW, in the hour starting 1 Sept 2026, 10:00 EDT (UTC-04:00).

Average Day by Local Hour

29 days to 2026-09-19, America/New_York time
SEC average demand and net generation by local hour Average electricity demand in SEC by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 03:00 (177 MW) and highest at 15:00 (344 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 625 1,250 1,875 2,500 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in SEC by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 03:00 (177 MW) and highest at 15:00 (344 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
SEC average demand and net generation by local hour
Local hour (America/New_York)DemandNet generation
00:00207 MW1,911 MW
01:00195 MW1,822 MW
02:00188 MW1,782 MW
03:00177 MW1,685 MW
04:00177 MW1,677 MW
05:00183 MW1,721 MW
06:00192 MW1,792 MW
07:00197 MW1,737 MW
08:00213 MW1,746 MW
09:00236 MW1,784 MW
10:00278 MW1,906 MW
11:00300 MW1,984 MW
12:00315 MW2,016 MW
13:00328 MW2,058 MW
14:00339 MW2,056 MW
15:00344 MW2,078 MW
16:00343 MW2,085 MW
17:00333 MW2,075 MW
18:00323 MW2,107 MW
19:00303 MW2,143 MW
20:00285 MW2,141 MW
21:00263 MW2,112 MW
22:00239 MW2,066 MW
23:00220 MW1,998 MW
Average SEC demand, net generation by local hour
Local hourDemandNet generation
00:00 207 MW 1,911 MW
01:00 195 MW 1,822 MW
02:00 188 MW 1,782 MW
03:00 177 MW 1,685 MW
04:00 177 MW 1,677 MW
05:00 183 MW 1,721 MW
06:00 192 MW 1,792 MW
07:00 197 MW 1,737 MW
08:00 213 MW 1,746 MW
09:00 236 MW 1,784 MW
10:00 278 MW 1,906 MW
11:00 300 MW 1,984 MW
12:00 315 MW 2,016 MW
13:00 328 MW 2,058 MW
14:00 339 MW 2,056 MW
15:00 344 MW 2,078 MW
16:00 343 MW 2,085 MW
17:00 333 MW 2,075 MW
18:00 323 MW 2,107 MW
19:00 303 MW 2,143 MW
20:00 285 MW 2,141 MW
21:00 263 MW 2,112 MW
22:00 239 MW 2,066 MW
23:00 220 MW 1,998 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. Solar is left out of the net load calculation for SEC: 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 748 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.