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

PACW 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 PACW averaged 2,264 MW and typically peaked at 17:00 local time (2,675 MW) and bottomed out at 03:00 (1,815 MW). With solar and wind taken off, the remaining load fell to 1,526 MW at 03:00 and then rose 360 MW between 15:00 to 18:00. Hours are local clock time (America/Los_Angeles).

Key Facts

  • Over 29 complete local days from 22 August to 19 September 2026, average demand in PACW was 2,264 MW. The hour of the day with the highest average demand was 17:00 local time (2,675 MW) and the lowest was 03:00 (1,815 MW).
  • The largest three hour rise in average demand was 202 MW, between 14:00 to 17:00 local time.
  • The single highest hour of demand in the 30 day window was 3,458 MW, in the hour starting 24 Aug 2026, 18:00 PDT (UTC-07:00).
  • Solar output averaged 347 MW at its 13:00 peak, 15% of average demand.
  • Demand minus solar and wind (net load) averaged 1,870 MW, fell to 1,526 MW at 03:00 and rose 360 MW over the three hours from 15:00 to 18:00, 16% of average demand.

Average Day by Local Hour

29 days to 2026-09-19, America/Los_Angeles time
PACW average demand and net generation by local hour Average electricity demand in PACW by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 03:00 (1,815 MW) and highest at 17:00 (2,675 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 750 1,500 2,250 3,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in PACW by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 03:00 (1,815 MW) and highest at 17:00 (2,675 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
PACW average demand and net generation by local hour
Local hour (America/Los_Angeles)DemandNet generation
00:001,958 MW1,055 MW
01:001,882 MW1,047 MW
02:001,834 MW1,045 MW
03:001,815 MW1,050 MW
04:001,844 MW1,064 MW
05:001,943 MW1,077 MW
06:002,091 MW1,081 MW
07:002,200 MW1,051 MW
08:002,254 MW1,172 MW
09:002,287 MW1,230 MW
10:002,301 MW1,233 MW
11:002,322 MW1,228 MW
12:002,364 MW1,201 MW
13:002,415 MW1,206 MW
14:002,472 MW1,212 MW
15:002,535 MW1,248 MW
16:002,611 MW1,241 MW
17:002,675 MW1,241 MW
18:002,673 MW1,127 MW
19:002,622 MW1,081 MW
20:002,549 MW1,090 MW
21:002,401 MW1,064 MW
22:002,222 MW1,077 MW
23:002,064 MW1,113 MW
PACW duck curve: demand and net load by local hour Average demand and net load (demand minus solar and wind) in PACW by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 03:00 (1,526 MW) and then rose 360 MW between 15:00 to 18:00. 0 750 1,500 2,250 3,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average demand and net load (demand minus solar and wind) in PACW by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 03:00 (1,526 MW) and then rose 360 MW between 15:00 to 18:00.
Mean MW by local hour, 2026-08-22 to 2026-09-19
PACW duck curve: demand and net load by local hour
Local hour (America/Los_Angeles)DemandNet load (demand minus solar and wind)
00:001,958 MW1,691 MW
01:001,882 MW1,604 MW
02:001,834 MW1,551 MW
03:001,815 MW1,526 MW
04:001,844 MW1,549 MW
05:001,943 MW1,641 MW
06:002,091 MW1,779 MW
07:002,200 MW1,809 MW
08:002,254 MW1,711 MW
09:002,287 MW1,688 MW
10:002,301 MW1,693 MW
11:002,322 MW1,732 MW
12:002,364 MW1,797 MW
13:002,415 MW1,847 MW
14:002,472 MW1,921 MW
15:002,535 MW2,016 MW
16:002,611 MW2,124 MW
17:002,675 MW2,251 MW
18:002,673 MW2,375 MW
19:002,622 MW2,395 MW
20:002,549 MW2,297 MW
21:002,401 MW2,139 MW
22:002,222 MW1,950 MW
23:002,064 MW1,791 MW
PACW average solar and wind output by local hour Average solar and wind generation in PACW by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 13:00 at 347 MW. 0 100 200 300 400 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar and wind generation in PACW by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 13:00 at 347 MW.
Mean MW by local hour, 2026-08-22 to 2026-09-19
PACW average solar and wind output by local hour
Local hour (America/Los_Angeles)SolarWind
00:000 MW267 MW
01:000 MW278 MW
02:000 MW283 MW
03:000 MW290 MW
04:000 MW295 MW
05:000 MW302 MW
06:003 MW309 MW
07:0088 MW303 MW
08:00251 MW292 MW
09:00318 MW281 MW
10:00343 MW265 MW
11:00346 MW244 MW
12:00345 MW222 MW
13:00347 MW221 MW
14:00343 MW208 MW
15:00325 MW195 MW
16:00301 MW186 MW
17:00236 MW188 MW
18:00105 MW193 MW
19:0011 MW215 MW
20:001 MW250 MW
21:000 MW262 MW
22:000 MW272 MW
23:000 MW274 MW
Average PACW demand, net generation, solar, wind and net load by local hour
Local hourDemandNet generationSolarWindNet load
00:00 1,958 MW 1,055 MW 0 MW 267 MW 1,691 MW
01:00 1,882 MW 1,047 MW 0 MW 278 MW 1,604 MW
02:00 1,834 MW 1,045 MW 0 MW 283 MW 1,551 MW
03:00 1,815 MW 1,050 MW 0 MW 290 MW 1,526 MW
04:00 1,844 MW 1,064 MW 0 MW 295 MW 1,549 MW
05:00 1,943 MW 1,077 MW 0 MW 302 MW 1,641 MW
06:00 2,091 MW 1,081 MW 3 MW 309 MW 1,779 MW
07:00 2,200 MW 1,051 MW 88 MW 303 MW 1,809 MW
08:00 2,254 MW 1,172 MW 251 MW 292 MW 1,711 MW
09:00 2,287 MW 1,230 MW 318 MW 281 MW 1,688 MW
10:00 2,301 MW 1,233 MW 343 MW 265 MW 1,693 MW
11:00 2,322 MW 1,228 MW 346 MW 244 MW 1,732 MW
12:00 2,364 MW 1,201 MW 345 MW 222 MW 1,797 MW
13:00 2,415 MW 1,206 MW 347 MW 221 MW 1,847 MW
14:00 2,472 MW 1,212 MW 343 MW 208 MW 1,921 MW
15:00 2,535 MW 1,248 MW 325 MW 195 MW 2,016 MW
16:00 2,611 MW 1,241 MW 301 MW 186 MW 2,124 MW
17:00 2,675 MW 1,241 MW 236 MW 188 MW 2,251 MW
18:00 2,673 MW 1,127 MW 105 MW 193 MW 2,375 MW
19:00 2,622 MW 1,081 MW 11 MW 215 MW 2,395 MW
20:00 2,549 MW 1,090 MW 1 MW 250 MW 2,297 MW
21:00 2,401 MW 1,064 MW 0 MW 262 MW 2,139 MW
22:00 2,222 MW 1,077 MW 0 MW 272 MW 1,950 MW
23:00 2,064 MW 1,113 MW 0 MW 274 MW 1,791 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 and wind generation. The single highest hour of demand in the whole 30 day window was 3,458 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/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.