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

MISO 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 MISO averaged 86,632 MW and typically peaked at 17:00 local time (101.7 GW) and bottomed out at 05:00 (71,802 MW). With solar and wind taken off, the remaining load fell to 61,163 MW at 09:00 and then rose 9,798 MW between 16:00 to 19:00. Hours are local clock time (America/New_York).

Key Facts

  • Over 29 complete local days from 22 August to 19 September 2026, average demand in MISO was 86,632 MW. The hour of the day with the highest average demand was 17:00 local time (101.7 GW) and the lowest was 05:00 (71,802 MW).
  • The largest three hour rise in average demand was 4,036 MW, between 14:00 to 17:00 local time.
  • The single highest hour of demand in the 30 day window was 119.2 GW, in the hour starting 2 Sept 2026, 17:00 EDT (UTC-04:00).
  • Solar output averaged 16,435 MW at its 12:00 peak, 19% of average demand.
  • Demand minus solar and wind (net load) averaged 72,065 MW, fell to 61,163 MW at 09:00 and rose 9,798 MW over the three hours from 16:00 to 19:00, 11% of average demand.

Average Day by Local Hour

29 days to 2026-09-19, America/New_York time
MISO average demand and net generation by local hour Average electricity demand in MISO by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 05:00 (71,802 MW) and highest at 17:00 (101.7 GW). Net generation is the power produced inside the grid, so it differs from demand by net imports. 0 30,000 60,000 90,000 120,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average electricity demand in MISO by local clock hour over 29 complete local days from 22 August to 19 September 2026. It was lowest at 05:00 (71,802 MW) and highest at 17:00 (101.7 GW). 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
MISO average demand and net generation by local hour
Local hour (America/New_York)DemandNet generation
00:0080,644 MW78,732 MW
01:0077,532 MW74,809 MW
02:0074,983 MW71,397 MW
03:0073,064 MW69,174 MW
04:0071,867 MW67,949 MW
05:0071,802 MW68,057 MW
06:0073,324 MW69,799 MW
07:0075,604 MW72,043 MW
08:0077,284 MW74,490 MW
09:0079,872 MW78,043 MW
10:0083,335 MW82,256 MW
11:0087,165 MW86,738 MW
12:0091,012 MW91,099 MW
13:0094,612 MW94,925 MW
14:0097,623 MW98,062 MW
15:0099,544 MW99,916 MW
16:00100.9 GW101.1 GW
17:00101.7 GW101.5 GW
18:00101.4 GW100.1 GW
19:0099,695 MW96,218 MW
20:0097,122 MW92,865 MW
21:0094,435 MW90,882 MW
22:0089,886 MW87,125 MW
23:0084,777 MW82,556 MW
MISO duck curve: demand and net load by local hour Average demand and net load (demand minus solar and wind) in MISO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 09:00 (61,163 MW) and then rose 9,798 MW between 16:00 to 19:00. 0 30,000 60,000 90,000 120,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average demand and net load (demand minus solar and wind) in MISO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Net load was lowest at 09:00 (61,163 MW) and then rose 9,798 MW between 16:00 to 19:00.
Mean MW by local hour, 2026-08-22 to 2026-09-19
MISO duck curve: demand and net load by local hour
Local hour (America/New_York)DemandNet load (demand minus solar and wind)
00:0080,644 MW70,866 MW
01:0077,532 MW67,791 MW
02:0074,983 MW65,317 MW
03:0073,064 MW63,559 MW
04:0071,867 MW62,465 MW
05:0071,802 MW62,519 MW
06:0073,324 MW64,350 MW
07:0075,604 MW66,534 MW
08:0077,284 MW64,782 MW
09:0079,872 MW61,163 MW
10:0083,335 MW61,746 MW
11:0087,165 MW64,345 MW
12:0091,012 MW67,601 MW
13:0094,612 MW71,123 MW
14:0097,623 MW74,336 MW
15:0099,544 MW76,640 MW
16:00100.9 GW78,847 MW
17:00101.7 GW81,002 MW
18:00101.4 GW83,902 MW
19:0099,695 MW88,646 MW
20:0097,122 MW89,756 MW
21:0094,435 MW86,343 MW
22:0089,886 MW80,790 MW
23:0084,777 MW75,146 MW
MISO average solar and wind output by local hour Average solar and wind generation in MISO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 12:00 at 16,435 MW. 0 5,000 10,000 15,000 20,000 00:0003:0006:0009:0012:0015:0018:0021:00
Average solar and wind generation in MISO by local clock hour over 29 complete local days from 22 August to 19 September 2026. Solar peaked at 12:00 at 16,435 MW.
Mean MW by local hour, 2026-08-22 to 2026-09-19
MISO average solar and wind output by local hour
Local hour (America/New_York)SolarWind
00:0015 MW9,764 MW
01:0013 MW9,728 MW
02:0013 MW9,652 MW
03:0013 MW9,492 MW
04:0013 MW9,389 MW
05:0012 MW9,271 MW
06:0011 MW8,963 MW
07:00125 MW8,945 MW
08:003,593 MW8,910 MW
09:0010,756 MW7,953 MW
10:0014,564 MW7,025 MW
11:0015,955 MW6,865 MW
12:0016,435 MW6,976 MW
13:0016,396 MW7,093 MW
14:0016,018 MW7,270 MW
15:0015,467 MW7,438 MW
16:0014,607 MW7,458 MW
17:0013,215 MW7,443 MW
18:0010,240 MW7,275 MW
19:004,084 MW6,966 MW
20:00263 MW7,103 MW
21:0019 MW8,073 MW
22:0017 MW9,079 MW
23:0014 MW9,616 MW
Average MISO demand, net generation, solar, wind and net load by local hour
Local hourDemandNet generationSolarWindNet load
00:00 80,644 MW 78,732 MW 15 MW 9,764 MW 70,866 MW
01:00 77,532 MW 74,809 MW 13 MW 9,728 MW 67,791 MW
02:00 74,983 MW 71,397 MW 13 MW 9,652 MW 65,317 MW
03:00 73,064 MW 69,174 MW 13 MW 9,492 MW 63,559 MW
04:00 71,867 MW 67,949 MW 13 MW 9,389 MW 62,465 MW
05:00 71,802 MW 68,057 MW 12 MW 9,271 MW 62,519 MW
06:00 73,324 MW 69,799 MW 11 MW 8,963 MW 64,350 MW
07:00 75,604 MW 72,043 MW 125 MW 8,945 MW 66,534 MW
08:00 77,284 MW 74,490 MW 3,593 MW 8,910 MW 64,782 MW
09:00 79,872 MW 78,043 MW 10,756 MW 7,953 MW 61,163 MW
10:00 83,335 MW 82,256 MW 14,564 MW 7,025 MW 61,746 MW
11:00 87,165 MW 86,738 MW 15,955 MW 6,865 MW 64,345 MW
12:00 91,012 MW 91,099 MW 16,435 MW 6,976 MW 67,601 MW
13:00 94,612 MW 94,925 MW 16,396 MW 7,093 MW 71,123 MW
14:00 97,623 MW 98,062 MW 16,018 MW 7,270 MW 74,336 MW
15:00 99,544 MW 99,916 MW 15,467 MW 7,438 MW 76,640 MW
16:00 100.9 GW 101.1 GW 14,607 MW 7,458 MW 78,847 MW
17:00 101.7 GW 101.5 GW 13,215 MW 7,443 MW 81,002 MW
18:00 101.4 GW 100.1 GW 10,240 MW 7,275 MW 83,902 MW
19:00 99,695 MW 96,218 MW 4,084 MW 6,966 MW 88,646 MW
20:00 97,122 MW 92,865 MW 263 MW 7,103 MW 89,756 MW
21:00 94,435 MW 90,882 MW 19 MW 8,073 MW 86,343 MW
22:00 89,886 MW 87,125 MW 17 MW 9,079 MW 80,790 MW
23:00 84,777 MW 82,556 MW 14 MW 9,616 MW 75,146 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 119.2 GW; 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/New_York. 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.