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

PSCO 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 PSCO averaged 5,728 MW and typically peaked at 15:00 local time (7,352 MW) and bottomed out at 04:00 (4,234 MW). With solar and wind taken off, the remaining load fell to 2,295 MW at 04:00 and then rose 463 MW between 14:00 to 17:00. Hours are local clock time (America/Denver).

Key Facts

  • Over 29 complete local days from 22 August to 19 September 2026, average demand in PSCO was 5,728 MW. The hour of the day with the highest average demand was 15:00 local time (7,352 MW) and the lowest was 04:00 (4,234 MW).
  • The single highest hour of demand in the 30 day window was 8,796 MW, in the hour starting 6 Sept 2026, 16:00 MDT (UTC-06:00).
  • Solar output averaged 2,014 MW at its 12:00 peak, 35% of average demand.
  • Demand minus solar and wind (net load) averaged 3,166 MW, fell to 2,295 MW at 04:00 and rose 463 MW over the three hours from 14:00 to 17:00, 8% of average demand.

Average Day by Local Hour

29 days to 2026-09-19, America/Denver time
PSCO average demand and net generation by local hour Average electricity demand in PSCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 04:00 (4,234 MW) and highest at 15:00 (7,352 MW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 2,000 4,000 6,000 8,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in PSCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 04:00 (4,234 MW) and highest at 15:00 (7,352 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
PSCO average demand and net generation by local hour
Local hour (America/Denver)DemandNet generation
00:004,806 MW5,439 MW
01:004,564 MW5,228 MW
02:004,345 MW4,980 MW
03:004,238 MW4,866 MW
04:004,234 MW4,868 MW
05:004,358 MW4,997 MW
06:004,589 MW5,242 MW
07:004,915 MW5,623 MW
08:005,297 MW5,964 MW
09:005,560 MW6,191 MW
10:005,872 MW6,543 MW
11:006,196 MW6,872 MW
12:006,540 MW7,198 MW
13:006,916 MW7,519 MW
14:007,222 MW7,771 MW
15:007,352 MW7,818 MW
16:007,319 MW7,655 MW
17:007,082 MW7,385 MW
18:006,763 MW7,068 MW
19:006,444 MW6,782 MW
20:006,246 MW6,648 MW
21:005,940 MW6,419 MW
22:005,531 MW6,064 MW
23:005,156 MW5,696 MW
PSCO duck curve: demand and net load by local hour Average demand and net load (demand minus solar and wind) in PSCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 04:00 (2,295 MW) and then rose 463 MW between 14:00 to 17:00. 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 PSCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 04:00 (2,295 MW) and then rose 463 MW between 14:00 to 17:00.
Mean MW by local hour, 2026-08-22 to 2026-09-19
PSCO duck curve: demand and net load by local hour
Local hour (America/Denver)DemandNet load (demand minus solar and wind)
00:004,806 MW2,550 MW
01:004,564 MW2,425 MW
02:004,345 MW2,351 MW
03:004,238 MW2,306 MW
04:004,234 MW2,295 MW
05:004,358 MW2,343 MW
06:004,589 MW2,523 MW
07:004,915 MW2,499 MW
08:005,297 MW2,545 MW
09:005,560 MW2,620 MW
10:005,872 MW2,749 MW
11:006,196 MW2,994 MW
12:006,540 MW3,289 MW
13:006,916 MW3,750 MW
14:007,222 MW4,053 MW
15:007,352 MW4,270 MW
16:007,319 MW4,532 MW
17:007,082 MW4,517 MW
18:006,763 MW4,421 MW
19:006,444 MW4,151 MW
20:006,246 MW3,751 MW
21:005,940 MW3,273 MW
22:005,531 MW3,026 MW
23:005,156 MW2,748 MW
PSCO average solar and wind output by local hour Average solar and wind generation in PSCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 12:00 at 2,014 MW. 0 750 1,500 2,250 3,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar and wind generation in PSCO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 12:00 at 2,014 MW.
Mean MW by local hour, 2026-08-22 to 2026-09-19
PSCO average solar and wind output by local hour
Local hour (America/Denver)SolarWind
00:001 MW2,254 MW
01:001 MW2,139 MW
02:000 MW1,994 MW
03:000 MW1,932 MW
04:000 MW1,938 MW
05:000 MW2,015 MW
06:0026 MW2,041 MW
07:00607 MW1,808 MW
08:001,312 MW1,441 MW
09:001,570 MW1,369 MW
10:001,790 MW1,333 MW
11:001,931 MW1,271 MW
12:002,014 MW1,238 MW
13:001,977 MW1,188 MW
14:001,866 MW1,303 MW
15:001,580 MW1,502 MW
16:001,205 MW1,582 MW
17:00839 MW1,727 MW
18:00313 MW2,028 MW
19:0012 MW2,282 MW
20:002 MW2,494 MW
21:002 MW2,666 MW
22:001 MW2,504 MW
23:002 MW2,406 MW
Average PSCO demand, net generation, solar, wind and net load by local hour
Local hourDemandNet generationSolarWindNet load
00:00 4,806 MW 5,439 MW 1 MW 2,254 MW 2,550 MW
01:00 4,564 MW 5,228 MW 1 MW 2,139 MW 2,425 MW
02:00 4,345 MW 4,980 MW 0 MW 1,994 MW 2,351 MW
03:00 4,238 MW 4,866 MW 0 MW 1,932 MW 2,306 MW
04:00 4,234 MW 4,868 MW 0 MW 1,938 MW 2,295 MW
05:00 4,358 MW 4,997 MW 0 MW 2,015 MW 2,343 MW
06:00 4,589 MW 5,242 MW 26 MW 2,041 MW 2,523 MW
07:00 4,915 MW 5,623 MW 607 MW 1,808 MW 2,499 MW
08:00 5,297 MW 5,964 MW 1,312 MW 1,441 MW 2,545 MW
09:00 5,560 MW 6,191 MW 1,570 MW 1,369 MW 2,620 MW
10:00 5,872 MW 6,543 MW 1,790 MW 1,333 MW 2,749 MW
11:00 6,196 MW 6,872 MW 1,931 MW 1,271 MW 2,994 MW
12:00 6,540 MW 7,198 MW 2,014 MW 1,238 MW 3,289 MW
13:00 6,916 MW 7,519 MW 1,977 MW 1,188 MW 3,750 MW
14:00 7,222 MW 7,771 MW 1,866 MW 1,303 MW 4,053 MW
15:00 7,352 MW 7,818 MW 1,580 MW 1,502 MW 4,270 MW
16:00 7,319 MW 7,655 MW 1,205 MW 1,582 MW 4,532 MW
17:00 7,082 MW 7,385 MW 839 MW 1,727 MW 4,517 MW
18:00 6,763 MW 7,068 MW 313 MW 2,028 MW 4,421 MW
19:00 6,444 MW 6,782 MW 12 MW 2,282 MW 4,151 MW
20:00 6,246 MW 6,648 MW 2 MW 2,494 MW 3,751 MW
21:00 5,940 MW 6,419 MW 2 MW 2,666 MW 3,273 MW
22:00 5,531 MW 6,064 MW 1 MW 2,504 MW 3,026 MW
23:00 5,156 MW 5,696 MW 2 MW 2,406 MW 2,748 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 8,796 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.