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

BHBA 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 BHBA averaged 910 MW and typically peaked at 16:00 local time (1,034 MW) and bottomed out at 03:00 (790 MW). With solar and wind taken off, the remaining load fell to 680 MW at 08:00 and then rose 92 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 BHBA was 910 MW. The hour of the day with the highest average demand was 16:00 local time (1,034 MW) and the lowest was 03:00 (790 MW).
  • The largest three hour rise in average demand was 14 MW, between 14:00 to 17:00 local time.
  • The single highest hour of demand in the 30 day window was 1,164 MW, in the hour starting 4 Sept 2026, 16:00 MDT (UTC-06:00).
  • Solar output averaged 182 MW at its 11:00 peak, 20% of average demand.
  • Demand minus solar and wind (net load) averaged 778 MW, fell to 680 MW at 08:00 and rose 92 MW over the three hours from 15:00 to 18:00, 10% of average demand.

Average Day by Local Hour

29 days to 2026-09-19, America/Denver time
BHBA average demand and net generation by local hour Average electricity demand in BHBA by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 03:00 (790 MW) and highest at 16:00 (1,034 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 300 600 900 1,200 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in BHBA by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 03:00 (790 MW) and highest at 16:00 (1,034 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
BHBA average demand and net generation by local hour
Local hour (America/Denver)DemandNet generation
00:00823 MW883 MW
01:00803 MW875 MW
02:00792 MW854 MW
03:00790 MW841 MW
04:00794 MW833 MW
05:00810 MW852 MW
06:00823 MW867 MW
07:00852 MW913 MW
08:00891 MW981 MW
09:00918 MW988 MW
10:00941 MW999 MW
11:00962 MW1,002 MW
12:00984 MW1,006 MW
13:001,000 MW1,010 MW
14:001,013 MW1,003 MW
15:001,027 MW1,003 MW
16:001,034 MW998 MW
17:001,028 MW962 MW
18:00991 MW926 MW
19:00967 MW925 MW
20:00953 MW922 MW
21:00916 MW906 MW
22:00876 MW887 MW
23:00844 MW887 MW
BHBA duck curve: demand and net load by local hour Average demand and net load (demand minus solar and wind) in BHBA by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 08:00 (680 MW) and then rose 92 MW between 15:00 to 18:00. 0 300 600 900 1,200 00:0003:0006:0009:0012:0015:0018:0021:00
Average demand and net load (demand minus solar and wind) in BHBA by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 08:00 (680 MW) and then rose 92 MW between 15:00 to 18:00.
Mean MW by local hour, 2026-08-22 to 2026-09-19
BHBA duck curve: demand and net load by local hour
Local hour (America/Denver)DemandNet load (demand minus solar and wind)
00:00823 MW767 MW
01:00803 MW746 MW
02:00792 MW739 MW
03:00790 MW739 MW
04:00794 MW744 MW
05:00810 MW749 MW
06:00823 MW756 MW
07:00852 MW728 MW
08:00891 MW680 MW
09:00918 MW682 MW
10:00941 MW690 MW
11:00962 MW708 MW
12:00984 MW740 MW
13:001,000 MW762 MW
14:001,013 MW788 MW
15:001,027 MW812 MW
16:001,034 MW837 MW
17:001,028 MW873 MW
18:00991 MW904 MW
19:00967 MW897 MW
20:00953 MW884 MW
21:00916 MW857 MW
22:00876 MW814 MW
23:00844 MW781 MW
BHBA average solar and wind output by local hour Average solar and wind generation in BHBA by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 11:00 at 182 MW. 0 50 100 150 200 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar and wind generation in BHBA by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 11:00 at 182 MW.
Mean MW by local hour, 2026-08-22 to 2026-09-19
BHBA average solar and wind output by local hour
Local hour (America/Denver)SolarWind
00:000 MW56 MW
01:000 MW56 MW
02:000 MW53 MW
03:000 MW51 MW
04:000 MW49 MW
05:000 MW60 MW
06:004 MW63 MW
07:0062 MW62 MW
08:00141 MW70 MW
09:00161 MW75 MW
10:00179 MW72 MW
11:00182 MW73 MW
12:00175 MW70 MW
13:00171 MW66 MW
14:00154 MW71 MW
15:00149 MW66 MW
16:00129 MW69 MW
17:0093 MW62 MW
18:0029 MW58 MW
19:001 MW69 MW
20:000 MW68 MW
21:000 MW59 MW
22:000 MW62 MW
23:000 MW63 MW
Average BHBA demand, net generation, solar, wind and net load by local hour
Local hourDemandNet generationSolarWindNet load
00:00 823 MW 883 MW 0 MW 56 MW 767 MW
01:00 803 MW 875 MW 0 MW 56 MW 746 MW
02:00 792 MW 854 MW 0 MW 53 MW 739 MW
03:00 790 MW 841 MW 0 MW 51 MW 739 MW
04:00 794 MW 833 MW 0 MW 49 MW 744 MW
05:00 810 MW 852 MW 0 MW 60 MW 749 MW
06:00 823 MW 867 MW 4 MW 63 MW 756 MW
07:00 852 MW 913 MW 62 MW 62 MW 728 MW
08:00 891 MW 981 MW 141 MW 70 MW 680 MW
09:00 918 MW 988 MW 161 MW 75 MW 682 MW
10:00 941 MW 999 MW 179 MW 72 MW 690 MW
11:00 962 MW 1,002 MW 182 MW 73 MW 708 MW
12:00 984 MW 1,006 MW 175 MW 70 MW 740 MW
13:00 1,000 MW 1,010 MW 171 MW 66 MW 762 MW
14:00 1,013 MW 1,003 MW 154 MW 71 MW 788 MW
15:00 1,027 MW 1,003 MW 149 MW 66 MW 812 MW
16:00 1,034 MW 998 MW 129 MW 69 MW 837 MW
17:00 1,028 MW 962 MW 93 MW 62 MW 873 MW
18:00 991 MW 926 MW 29 MW 58 MW 904 MW
19:00 967 MW 925 MW 1 MW 69 MW 897 MW
20:00 953 MW 922 MW 0 MW 68 MW 884 MW
21:00 916 MW 906 MW 0 MW 59 MW 857 MW
22:00 876 MW 887 MW 0 MW 62 MW 814 MW
23:00 844 MW 887 MW 0 MW 63 MW 781 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 1,164 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.