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Built 2026-11-05 (5 November 2026)

Switzerland Demand Forecast Accuracy: Error, Bias and Worst Miss, 8 October to 5 November 2026

The day-ahead demand forecast for Switzerland was off by 4.5% on average (mean absolute percentage error) over 686 hours from 8 October to 5 November 2026, and 83% of hours landed within 5% of the reading. Its bias was +2.5%: it ran high on average, an over forecast. The largest miss was 4,961 MW (126.5%) too high at 3 Nov 2026, 06:00 CET (UTC+01:00). Dates and times are local (Europe/Zurich).

Key Facts

  • The day-ahead demand forecast for Switzerland was off by 4.5% on average (mean absolute percentage error) over 686 hours from 8 October to 5 November 2026, and 83% of hours landed within 5% of the reading. Its bias was +2.5%: it ran high on average, an over forecast. The largest miss was 4,961 MW (126.5%) too high at 3 Nov 2026, 06:00 CET (UTC+01:00).
  • Across 47 European bidding zones ranked by average error over their own latest 30 day windows, Switzerland came 33 (1 is the smallest error).
  • On average the forecast differed from reported demand by 269 MW, against average demand of 7,194 MW.
  • The forecast was above reported demand in 56% of compared hours.

Forecast Error at a Glance

686 hours from 8 October to 5 November 2026
Average error4.5%
Bias+2.5%
Hours within 5%83%
Worst miss4,961 MW

Average error is the mean absolute percentage gap between the forecast and reported demand. Bias is the signed mean (+119 MW per hour on average): the forecast ran high on average, an over forecast. The worst miss was 4,961 MW (126.5%) too high at 3 Nov 2026, 06:00 CET (UTC+01:00): forecast 8,883 MW, reported 3,922 MW.

Source: ENTSO-E Transparency Platform (transparency.entsoe.eu), CC BY 4.0. Aggregated and converted by World Power Monitor; ENTSO-E does not endorse this site. (ENTSO-E Terms of Use plus CC BY 4.0 for listed data items) Data as of 2026-11-05. Accuracy is computed by World Power Monitor from the operator's hourly forecast and reported demand.

Forecast and Reported Demand, Last 7 Days

Local time, to 5 Nov 2026, 13:00 CET (UTC+01:00)
Switzerland day-ahead demand forecast and reported demand by hour Hourly reported demand and the day-ahead forecast for Switzerland over the last 7 days of the window, to 5 Nov 2026, 13:00 CET (UTC+01:00). Gaps are hours with a missing, zero or implausible report. 0 2,500 5,000 7,500 10,000 29 Oct, 14:0030 Oct, 14:0031 Oct, 14:001 Nov, 14:002 Nov, 14:003 Nov, 14:004 Nov, 14:00
Hourly reported demand and the day-ahead forecast for Switzerland over the last 7 days of the window, to 5 Nov 2026, 13:00 CET (UTC+01:00). Gaps are hours with a missing, zero or implausible report.
Data to 2026-11-05
Show the data table (168 rows)
Local hourReported demandDay-ahead forecast
29 Oct, 14:007,668 MW7,516 MW
29 Oct, 15:007,784 MW7,574 MW
29 Oct, 16:008,198 MW8,165 MW
29 Oct, 17:008,284 MW8,261 MW
29 Oct, 18:008,757 MW8,691 MW
29 Oct, 19:009,009 MW8,988 MW
29 Oct, 20:008,600 MW8,566 MW
29 Oct, 21:008,739 MW8,311 MW
29 Oct, 22:007,859 MW7,424 MW
29 Oct, 23:007,613 MW7,507 MW
30 Oct, 00:006,986 MW6,974 MW
30 Oct, 01:006,812 MW6,544 MW
30 Oct, 02:007,120 MW7,179 MW
30 Oct, 03:007,016 MW6,983 MW
30 Oct, 04:007,014 MW7,026 MW
30 Oct, 05:006,623 MW6,621 MW
30 Oct, 06:008,539 MW8,565 MW
30 Oct, 07:007,795 MW7,898 MW
30 Oct, 08:008,027 MW8,868 MW
30 Oct, 09:007,623 MW8,145 MW
30 Oct, 10:008,069 MW7,791 MW
30 Oct, 11:008,613 MW8,358 MW
30 Oct, 12:008,075 MW7,996 MW
30 Oct, 13:007,959 MW7,960 MW
30 Oct, 14:008,141 MW8,148 MW
30 Oct, 15:008,138 MW8,147 MW
30 Oct, 16:008,088 MW8,147 MW
30 Oct, 17:008,137 MW8,163 MW
30 Oct, 18:008,407 MW8,409 MW
30 Oct, 19:008,640 MW8,640 MW
30 Oct, 20:008,406 MW8,388 MW
30 Oct, 21:008,012 MW8,134 MW
30 Oct, 22:007,324 MW7,258 MW
30 Oct, 23:007,621 MW7,566 MW
31 Oct, 00:007,056 MW7,053 MW
31 Oct, 01:007,252 MW7,258 MW
31 Oct, 02:007,055 MW7,061 MW
31 Oct, 03:007,221 MW7,222 MW
31 Oct, 04:007,360 MW7,355 MW
31 Oct, 05:007,417 MW7,961 MW
31 Oct, 06:007,196 MW7,606 MW
31 Oct, 07:007,153 MW7,754 MW
31 Oct, 08:007,359 MW6,999 MW
31 Oct, 09:007,445 MW7,422 MW
31 Oct, 10:007,188 MW7,371 MW
31 Oct, 11:007,540 MW6,589 MW
31 Oct, 12:007,879 MW7,823 MW
31 Oct, 13:006,909 MW6,710 MW
31 Oct, 14:006,687 MW6,712 MW
31 Oct, 15:006,608 MW6,718 MW
31 Oct, 16:006,667 MW7,398 MW
31 Oct, 17:007,963 MW8,002 MW
31 Oct, 18:008,057 MW7,349 MW
31 Oct, 19:007,308 MW7,358 MW
31 Oct, 20:008,096 MW7,938 MW
31 Oct, 21:007,397 MW8,184 MW
31 Oct, 22:007,270 MW7,179 MW
31 Oct, 23:006,832 MW6,859 MW
1 Nov, 00:007,559 MW8,078 MW
1 Nov, 01:007,387 MW7,204 MW
1 Nov, 02:007,006 MW7,323 MW
1 Nov, 03:006,851 MW6,972 MW
1 Nov, 04:006,880 MW7,289 MW
1 Nov, 05:007,519 MW7,426 MW
1 Nov, 06:007,198 MW6,998 MW
1 Nov, 07:007,215 MW7,820 MW
1 Nov, 08:007,104 MW8,005 MW
1 Nov, 09:006,826 MW6,965 MW
1 Nov, 10:006,856 MW6,907 MW
1 Nov, 11:007,699 MW7,162 MW
1 Nov, 12:007,511 MW7,427 MW
1 Nov, 13:007,123 MW7,019 MW
1 Nov, 14:007,545 MW8,185 MW
1 Nov, 15:006,810 MW6,872 MW
1 Nov, 16:006,650 MW7,196 MW
1 Nov, 17:007,687 MW7,750 MW
1 Nov, 18:007,333 MW7,323 MW
1 Nov, 19:007,488 MW7,475 MW
1 Nov, 20:007,501 MW7,538 MW
1 Nov, 21:007,757 MW7,760 MW
1 Nov, 22:007,445 MW7,443 MW
1 Nov, 23:007,726 MW7,777 MW
2 Nov, 00:007,690 MW7,688 MW
2 Nov, 01:006,903 MW6,894 MW
2 Nov, 02:007,301 MW6,995 MW
2 Nov, 03:007,306 MW6,994 MW
2 Nov, 04:006,894 MW6,890 MW
2 Nov, 05:007,345 MW7,370 MW
2 Nov, 06:008,168 MW8,230 MW
2 Nov, 07:009,109 MW9,112 MW
2 Nov, 08:009,122 MW9,127 MW
2 Nov, 09:008,749 MW8,992 MW
2 Nov, 10:008,814 MW9,120 MW
2 Nov, 11:008,222 MW8,312 MW
2 Nov, 12:008,668 MW8,609 MW
2 Nov, 13:008,715 MW8,729 MW
2 Nov, 14:008,467 MW8,576 MW
2 Nov, 15:008,291 MW8,196 MW
2 Nov, 16:008,428 MW8,563 MW
2 Nov, 17:008,945 MW8,886 MW
2 Nov, 18:008,786 MW8,813 MW
2 Nov, 19:009,211 MW9,215 MW
2 Nov, 20:008,678 MW8,682 MW
2 Nov, 21:007,622 MW7,692 MW
2 Nov, 22:007,988 MW7,835 MW
2 Nov, 23:007,939 MW7,675 MW
3 Nov, 00:006,630 MW7,338 MW
3 Nov, 01:003,750 MW7,297 MW
3 Nov, 02:003,685 MW7,510 MW
3 Nov, 03:003,343 MW7,535 MW
3 Nov, 04:003,440 MW7,125 MW
3 Nov, 05:003,453 MW8,199 MW
3 Nov, 06:003,922 MW8,883 MW
3 Nov, 07:004,831 MW9,194 MW
3 Nov, 08:005,934 MW9,266 MW
3 Nov, 09:006,182 MW8,992 MW
3 Nov, 10:006,078 MW8,683 MW
3 Nov, 11:005,994 MW9,039 MW
3 Nov, 12:005,914 MW8,574 MW
3 Nov, 13:005,368 MW8,511 MW
3 Nov, 14:005,507 MW8,387 MW
3 Nov, 15:005,783 MW8,299 MW
3 Nov, 16:005,771 MW8,536 MW
3 Nov, 17:005,927 MW8,613 MW
3 Nov, 18:006,261 MW8,807 MW
3 Nov, 19:006,714 MW9,343 MW
3 Nov, 20:006,691 MW8,666 MW
3 Nov, 21:006,263 MW8,065 MW
3 Nov, 22:005,374 MW7,972 MW
3 Nov, 23:005,207 MW8,363 MW
4 Nov, 00:007,504 MW7,310 MW
4 Nov, 01:008,179 MW8,256 MW
4 Nov, 02:007,960 MW7,834 MW
4 Nov, 03:007,920 MW7,825 MW
4 Nov, 04:008,294 MW8,291 MW
4 Nov, 05:007,634 MW7,858 MW
4 Nov, 06:008,197 MW8,126 MW
4 Nov, 07:009,364 MW9,330 MW
4 Nov, 08:008,984 MW9,177 MW
4 Nov, 09:008,360 MW8,360 MW
4 Nov, 10:008,889 MW8,896 MW
4 Nov, 11:008,352 MW8,309 MW
4 Nov, 12:008,245 MW8,184 MW
4 Nov, 13:007,791 MW7,167 MW
4 Nov, 14:008,341 MW8,128 MW
4 Nov, 15:007,887 MW7,999 MW
4 Nov, 16:008,889 MW8,979 MW
4 Nov, 17:008,871 MW9,043 MW
4 Nov, 18:008,840 MW8,993 MW
4 Nov, 19:009,091 MW9,001 MW
4 Nov, 20:008,605 MW8,697 MW
4 Nov, 21:008,327 MW8,367 MW
4 Nov, 22:007,878 MW7,932 MW
4 Nov, 23:007,744 MW7,637 MW
5 Nov, 00:007,108 MW7,134 MW
5 Nov, 01:007,684 MW7,408 MW
5 Nov, 02:007,427 MW7,435 MW
5 Nov, 03:007,297 MW7,396 MW
5 Nov, 04:007,422 MW7,433 MW
5 Nov, 05:007,796 MW8,212 MW
5 Nov, 06:008,663 MW8,864 MW
5 Nov, 07:008,688 MW9,199 MW
5 Nov, 08:008,916 MW9,238 MW
5 Nov, 09:008,180 MW8,581 MW
5 Nov, 10:008,854 MW8,451 MW
5 Nov, 11:008,422 MW8,328 MW
5 Nov, 12:007,990 MW8,028 MW
5 Nov, 13:008,137 MW7,801 MW

Assumptions

  • Only hours with both a forecast and a positive demand reading count (686 of 687 hours in the window). Missing and zero values, and readings under 30% or over 3 times the grid's own median for the window, are treated as reporting faults and left out.
  • Error is (forecast minus reported demand) divided by reported demand; average error uses absolute values so high and low misses do not cancel. Bias keeps the sign and does cancel.
  • Reported demand is preliminary and may be revised. A 30 day window is a short sample and one heat wave or holiday can move these figures.
  • European figures are for the ENTSO-E bidding zone named on this page. US and European grids are ranked separately.
Cite this page
APA 7

World Power Monitor. (2026). Switzerland Demand Forecast Accuracy: Error, Bias and Worst Miss. https://worldpowermonitor.com/forecast-accuracy/ch/

Plain text

World Power Monitor. Switzerland Demand Forecast Accuracy: Error, Bias and Worst Miss. Data as of 2026-11-05. Data from ENTSO-E Transparency Platform. https://worldpowermonitor.com/forecast-accuracy/ch/

BibTeX 
@misc{wpm_forecast_accuracy_ch_2026,
  title = {{Switzerland Demand Forecast Accuracy: Error, Bias and Worst Miss}},
  author = {{World Power Monitor}},
  year = {2026},
  note = {Data as of 2026-11-05. Data from ENTSO-E Transparency Platform.},
  url = {https://worldpowermonitor.com/forecast-accuracy/ch/}
}

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