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

BPA 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 BPA averaged 6,787 MW and typically peaked at 08:00 local time (7,381 MW) and bottomed out at 02:00 (5,916 MW). With solar and wind taken off, the remaining load fell to 5,521 MW at 03:00 and then rose 636 MW between 15:00 to 18:00. Hours are local clock time (America/Los_Angeles).

Key Facts

  • Over 29 complete local days from 29 September to 27 October 2026, average demand in BPA was 6,787 MW. The hour of the day with the highest average demand was 08:00 local time (7,381 MW) and the lowest was 02:00 (5,916 MW).
  • The largest three hour rise in average demand was 359 MW, between 15:00 to 18:00 local time.
  • The single highest hour of demand in the 30 day window was 8,111 MW, in the hour starting 12 Oct 2026, 08:00 PDT (UTC-07:00).
  • Solar output averaged 312 MW at its 10:00 peak, 5% of average demand.
  • Demand minus solar and wind (net load) averaged 6,269 MW, fell to 5,521 MW at 03:00 and rose 636 MW over the three hours from 15:00 to 18:00, 9% of average demand.

Average Day by Local Hour

29 days to 2026-10-27, America/Los_Angeles time
BPA average demand and net generation by local hour Average electricity demand in BPA by local clock hour over 29 complete local days from 29 September to 27 October 2026. It was lowest at 02:00 (5,916 MW) and highest at 08:00 (7,381 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 2,500 5,000 7,500 10,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in BPA by local clock hour over 29 complete local days from 29 September to 27 October 2026. It was lowest at 02:00 (5,916 MW) and highest at 08:00 (7,381 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
BPA average demand and net generation by local hour
Local hour (America/Los_Angeles)DemandNet generation
00:006,061 MW6,305 MW
01:005,964 MW6,051 MW
02:005,916 MW5,964 MW
03:005,943 MW6,007 MW
04:006,095 MW6,190 MW
05:006,453 MW6,724 MW
06:006,916 MW7,096 MW
07:007,271 MW7,638 MW
08:007,381 MW7,576 MW
09:007,317 MW7,504 MW
10:007,187 MW7,292 MW
11:007,093 MW7,064 MW
12:007,000 MW6,985 MW
13:006,940 MW6,964 MW
14:006,905 MW6,966 MW
15:006,921 MW7,111 MW
16:007,013 MW7,501 MW
17:007,179 MW7,941 MW
18:007,281 MW8,070 MW
19:007,290 MW7,945 MW
20:007,122 MW7,623 MW
21:006,865 MW7,189 MW
22:006,529 MW6,986 MW
23:006,239 MW6,503 MW
BPA duck curve: demand and net load by local hour Average demand and net load (demand minus solar and wind) in BPA by local clock hour over 29 complete local days from 29 September to 27 October 2026. Net load was lowest at 03:00 (5,521 MW) and then rose 636 MW between 15:00 to 18:00. 0 2,000 4,000 6,000 8,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average demand and net load (demand minus solar and wind) in BPA by local clock hour over 29 complete local days from 29 September to 27 October 2026. Net load was lowest at 03:00 (5,521 MW) and then rose 636 MW between 15:00 to 18:00.
Mean MW by local hour, 2026-09-29 to 2026-10-27
BPA duck curve: demand and net load by local hour
Local hour (America/Los_Angeles)DemandNet load (demand minus solar and wind)
00:006,061 MW5,685 MW
01:005,964 MW5,585 MW
02:005,916 MW5,521 MW
03:005,943 MW5,521 MW
04:006,095 MW5,658 MW
05:006,453 MW6,014 MW
06:006,916 MW6,475 MW
07:007,271 MW6,810 MW
08:007,381 MW6,822 MW
09:007,317 MW6,641 MW
10:007,187 MW6,481 MW
11:007,093 MW6,394 MW
12:007,000 MW6,298 MW
13:006,940 MW6,230 MW
14:006,905 MW6,175 MW
15:006,921 MW6,186 MW
16:007,013 MW6,343 MW
17:007,179 MW6,667 MW
18:007,281 MW6,822 MW
19:007,290 MW6,855 MW
20:007,122 MW6,706 MW
21:006,865 MW6,482 MW
22:006,529 MW6,158 MW
23:006,239 MW5,923 MW
BPA average solar and wind output by local hour Average solar and wind generation in BPA by local clock hour over 29 complete local days from 29 September to 27 October 2026. Solar peaked at 10:00 at 312 MW. 0 125 250 375 500 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar and wind generation in BPA by local clock hour over 29 complete local days from 29 September to 27 October 2026. Solar peaked at 10:00 at 312 MW.
Mean MW by local hour, 2026-09-29 to 2026-10-27
BPA average solar and wind output by local hour
Local hour (America/Los_Angeles)SolarWind
00:001 MW375 MW
01:000 MW378 MW
02:000 MW394 MW
03:000 MW423 MW
04:000 MW437 MW
05:000 MW439 MW
06:000 MW440 MW
07:0019 MW441 MW
08:00149 MW409 MW
09:00289 MW387 MW
10:00312 MW394 MW
11:00302 MW397 MW
12:00293 MW409 MW
13:00291 MW420 MW
14:00308 MW421 MW
15:00307 MW428 MW
16:00238 MW432 MW
17:0095 MW418 MW
18:0021 MW438 MW
19:0012 MW422 MW
20:002 MW415 MW
21:001 MW382 MW
22:003 MW367 MW
23:001 MW314 MW
Average BPA demand, net generation, solar, wind and net load by local hour
Local hourDemandNet generationSolarWindNet load
00:00 6,061 MW 6,305 MW 1 MW 375 MW 5,685 MW
01:00 5,964 MW 6,051 MW 0 MW 378 MW 5,585 MW
02:00 5,916 MW 5,964 MW 0 MW 394 MW 5,521 MW
03:00 5,943 MW 6,007 MW 0 MW 423 MW 5,521 MW
04:00 6,095 MW 6,190 MW 0 MW 437 MW 5,658 MW
05:00 6,453 MW 6,724 MW 0 MW 439 MW 6,014 MW
06:00 6,916 MW 7,096 MW 0 MW 440 MW 6,475 MW
07:00 7,271 MW 7,638 MW 19 MW 441 MW 6,810 MW
08:00 7,381 MW 7,576 MW 149 MW 409 MW 6,822 MW
09:00 7,317 MW 7,504 MW 289 MW 387 MW 6,641 MW
10:00 7,187 MW 7,292 MW 312 MW 394 MW 6,481 MW
11:00 7,093 MW 7,064 MW 302 MW 397 MW 6,394 MW
12:00 7,000 MW 6,985 MW 293 MW 409 MW 6,298 MW
13:00 6,940 MW 6,964 MW 291 MW 420 MW 6,230 MW
14:00 6,905 MW 6,966 MW 308 MW 421 MW 6,175 MW
15:00 6,921 MW 7,111 MW 307 MW 428 MW 6,186 MW
16:00 7,013 MW 7,501 MW 238 MW 432 MW 6,343 MW
17:00 7,179 MW 7,941 MW 95 MW 418 MW 6,667 MW
18:00 7,281 MW 8,070 MW 21 MW 438 MW 6,822 MW
19:00 7,290 MW 7,945 MW 12 MW 422 MW 6,855 MW
20:00 7,122 MW 7,623 MW 2 MW 415 MW 6,706 MW
21:00 6,865 MW 7,189 MW 1 MW 382 MW 6,482 MW
22:00 6,529 MW 6,986 MW 3 MW 367 MW 6,158 MW
23:00 6,239 MW 6,503 MW 1 MW 314 MW 5,923 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 and wind generation. The single highest hour of demand in the whole 30 day window was 8,111 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/Los_Angeles. 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). BPA Daily Load Shape and Duck Curve by Hour. https://worldpowermonitor.com/load-shapes/bpa/

Plain text

World Power Monitor. BPA 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/bpa/

BibTeX 
@misc{wpm_load_shapes_bpa_2026,
  title = {{BPA 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/bpa/}
}

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