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

EPE 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 EPE averaged 1,513 MW and typically peaked at 16:00 local time (2,077 MW) and bottomed out at 04:00 (1,085 MW). With solar taken off, the remaining load fell to 773 MW at 09:00 and then rose 350 MW between 15:00 to 18:00. Hours are local clock time (America/Denver).

Key Facts

  • Over 29 complete local days from 22 August to 19 September 2026, average demand in EPE was 1,513 MW. The hour of the day with the highest average demand was 16:00 local time (2,077 MW) and the lowest was 04:00 (1,085 MW).
  • The largest three hour rise in average demand was 124 MW, between 14:00 to 17:00 local time.
  • The single highest hour of demand in the 30 day window was 2,399 MW, in the hour starting 25 Aug 2026, 16:00 MDT (UTC-06:00).
  • Solar output averaged 705 MW at its 14:00 peak, 47% of average demand.
  • Demand minus solar (net load) averaged 1,220 MW, fell to 773 MW at 09:00 and rose 350 MW over the three hours from 15:00 to 18:00, 23% of average demand.

Average Day by Local Hour

29 days to 2026-09-19, America/Denver time
EPE average demand and net generation by local hour Average electricity demand in EPE by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 04:00 (1,085 MW) and highest at 16:00 (2,077 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 EPE by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 04:00 (1,085 MW) and highest at 16:00 (2,077 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
EPE average demand and net generation by local hour
Local hour (America/Denver)DemandNet generation
00:001,266 MW964 MW
01:001,186 MW901 MW
02:001,130 MW877 MW
03:001,108 MW866 MW
04:001,085 MW852 MW
05:001,096 MW855 MW
06:001,122 MW854 MW
07:001,136 MW921 MW
08:001,201 MW1,109 MW
09:001,286 MW1,181 MW
10:001,407 MW1,239 MW
11:001,544 MW1,273 MW
12:001,673 MW1,330 MW
13:001,818 MW1,409 MW
14:001,935 MW1,466 MW
15:002,019 MW1,490 MW
16:002,077 MW1,488 MW
17:002,059 MW1,408 MW
18:002,002 MW1,227 MW
19:001,885 MW1,087 MW
20:001,771 MW1,030 MW
21:001,648 MW1,014 MW
22:001,499 MW960 MW
23:001,364 MW998 MW
EPE duck curve: demand and net load by local hour Average demand and net load (demand minus solar) in EPE by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 09:00 (773 MW) and then rose 350 MW between 15:00 to 18:00. 0 625 1,250 1,875 2,500 00:0003:0006:0009:0012:0015:0018:0021:00
Average demand and net load (demand minus solar) in EPE by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 09:00 (773 MW) and then rose 350 MW between 15:00 to 18:00.
Mean MW by local hour, 2026-08-22 to 2026-09-19
EPE duck curve: demand and net load by local hour
Local hour (America/Denver)DemandNet load (demand minus solar)
00:001,266 MW1,236 MW
01:001,186 MW1,177 MW
02:001,130 MW1,125 MW
03:001,108 MW1,104 MW
04:001,085 MW1,080 MW
05:001,096 MW1,091 MW
06:001,122 MW1,107 MW
07:001,136 MW995 MW
08:001,201 MW792 MW
09:001,286 MW773 MW
10:001,407 MW828 MW
11:001,544 MW942 MW
12:001,673 MW1,023 MW
13:001,818 MW1,121 MW
14:001,935 MW1,230 MW
15:002,019 MW1,322 MW
16:002,077 MW1,428 MW
17:002,059 MW1,488 MW
18:002,002 MW1,672 MW
19:001,885 MW1,721 MW
20:001,771 MW1,664 MW
21:001,648 MW1,574 MW
22:001,499 MW1,472 MW
23:001,364 MW1,310 MW
EPE average solar output by local hour Average solar generation in EPE by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 14:00 at 705 MW. 0 200 400 600 800 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar generation in EPE by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 14:00 at 705 MW.
Mean MW by local hour, 2026-08-22 to 2026-09-19
EPE average solar output by local hour
Local hour (America/Denver)Solar
00:0029 MW
01:009 MW
02:006 MW
03:003 MW
04:004 MW
05:006 MW
06:0015 MW
07:00141 MW
08:00409 MW
09:00513 MW
10:00579 MW
11:00602 MW
12:00650 MW
13:00697 MW
14:00705 MW
15:00697 MW
16:00649 MW
17:00571 MW
18:00330 MW
19:00164 MW
20:00108 MW
21:0074 MW
22:0027 MW
23:0054 MW
Average EPE demand, net generation, solar and net load by local hour
Local hourDemandNet generationSolarNet load
00:00 1,266 MW 964 MW 29 MW 1,236 MW
01:00 1,186 MW 901 MW 9 MW 1,177 MW
02:00 1,130 MW 877 MW 6 MW 1,125 MW
03:00 1,108 MW 866 MW 3 MW 1,104 MW
04:00 1,085 MW 852 MW 4 MW 1,080 MW
05:00 1,096 MW 855 MW 6 MW 1,091 MW
06:00 1,122 MW 854 MW 15 MW 1,107 MW
07:00 1,136 MW 921 MW 141 MW 995 MW
08:00 1,201 MW 1,109 MW 409 MW 792 MW
09:00 1,286 MW 1,181 MW 513 MW 773 MW
10:00 1,407 MW 1,239 MW 579 MW 828 MW
11:00 1,544 MW 1,273 MW 602 MW 942 MW
12:00 1,673 MW 1,330 MW 650 MW 1,023 MW
13:00 1,818 MW 1,409 MW 697 MW 1,121 MW
14:00 1,935 MW 1,466 MW 705 MW 1,230 MW
15:00 2,019 MW 1,490 MW 697 MW 1,322 MW
16:00 2,077 MW 1,488 MW 649 MW 1,428 MW
17:00 2,059 MW 1,408 MW 571 MW 1,488 MW
18:00 2,002 MW 1,227 MW 330 MW 1,672 MW
19:00 1,885 MW 1,087 MW 164 MW 1,721 MW
20:00 1,771 MW 1,030 MW 108 MW 1,664 MW
21:00 1,648 MW 1,014 MW 74 MW 1,574 MW
22:00 1,499 MW 960 MW 27 MW 1,472 MW
23:00 1,364 MW 998 MW 54 MW 1,310 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 2,399 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/Denver. 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.