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Built 2026-11-12 (12 November 2026)

Switzerland Demand Forecast Accuracy: Error, Bias and Worst Miss, 15 October to 12 November 2026

The day-ahead demand forecast for Switzerland was off by 9.4% on average (mean absolute percentage error) over 686 hours from 15 October to 12 November 2026, and 69% of hours landed within 5% of the reading. Its bias was +7.7%: 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 9.4% on average (mean absolute percentage error) over 686 hours from 15 October to 12 November 2026, and 69% of hours landed within 5% of the reading. Its bias was +7.7%: 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 40 (1 is the smallest error).
  • On average the forecast differed from reported demand by 518 MW, against average demand of 7,094 MW.
  • The forecast was above reported demand in 64% of compared hours.

Forecast Error at a Glance

686 hours from 15 October to 12 November 2026
Average error9.4%
Bias+7.7%
Hours within 5%69%
Worst miss4,961 MW

Average error is the mean absolute percentage gap between the forecast and reported demand. Bias is the signed mean (+389 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 2026-11-12. 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 12 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 12 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 5 Nov, 14:006 Nov, 14:007 Nov, 14:008 Nov, 14:009 Nov, 14:0010 Nov, 14:0011 Nov, 14:00
Hourly reported demand and the day-ahead forecast for Switzerland over the last 7 days of the window, to 12 Nov 2026, 13:00 CET (UTC+01:00). Gaps are hours with a missing, zero or implausible report.
Data to 2026-11-12
Show the data table (168 rows)
Local hourReported demandDay-ahead forecast
5 Nov, 14:008,389 MW8,944 MW
5 Nov, 15:007,991 MW8,912 MW
5 Nov, 16:008,115 MW8,632 MW
5 Nov, 17:008,476 MW8,380 MW
5 Nov, 18:008,876 MW8,931 MW
5 Nov, 19:008,881 MW8,411 MW
5 Nov, 20:008,559 MW7,606 MW
5 Nov, 21:008,029 MW8,800 MW
5 Nov, 22:007,520 MW7,741 MW
5 Nov, 23:007,157 MW7,890 MW
6 Nov, 00:006,808 MW7,482 MW
6 Nov, 01:005,867 MW7,449 MW
6 Nov, 02:005,320 MW7,513 MW
6 Nov, 03:004,911 MW7,796 MW
6 Nov, 04:004,370 MW7,449 MW
6 Nov, 05:004,260 MW7,485 MW
6 Nov, 06:004,715 MW7,678 MW
6 Nov, 07:006,426 MW8,960 MW
6 Nov, 08:007,671 MW8,731 MW
6 Nov, 09:008,212 MW8,668 MW
6 Nov, 10:008,085 MW8,200 MW
6 Nov, 11:007,316 MW8,234 MW
6 Nov, 12:007,471 MW8,357 MW
6 Nov, 13:007,165 MW7,996 MW
6 Nov, 14:006,969 MW7,663 MW
6 Nov, 15:006,690 MW7,749 MW
6 Nov, 16:006,696 MW7,704 MW
6 Nov, 17:007,044 MW8,100 MW
6 Nov, 18:008,476 MW8,202 MW
6 Nov, 19:009,227 MW8,443 MW
6 Nov, 20:008,703 MW7,673 MW
6 Nov, 21:007,698 MW7,623 MW
6 Nov, 22:006,609 MW7,578 MW
6 Nov, 23:007,149 MW6,899 MW
7 Nov, 00:006,974 MW7,079 MW
7 Nov, 01:005,249 MW7,794 MW
7 Nov, 02:005,055 MW7,231 MW
7 Nov, 03:004,670 MW7,529 MW
7 Nov, 04:004,192 MW7,359 MW
7 Nov, 05:004,195 MW7,967 MW
7 Nov, 06:004,366 MW7,117 MW
7 Nov, 07:004,401 MW7,251 MW
7 Nov, 08:004,849 MW7,164 MW
7 Nov, 09:005,878 MW6,903 MW
7 Nov, 10:005,737 MW7,060 MW
7 Nov, 11:005,949 MW7,239 MW
7 Nov, 12:005,755 MW7,394 MW
7 Nov, 13:005,909 MW6,683 MW
7 Nov, 14:005,937 MW7,283 MW
7 Nov, 15:006,096 MW7,374 MW
7 Nov, 16:006,849 MW7,046 MW
7 Nov, 17:007,338 MW7,650 MW
7 Nov, 18:008,120 MW7,491 MW
7 Nov, 19:008,469 MW7,502 MW
7 Nov, 20:007,853 MW7,799 MW
7 Nov, 21:007,044 MW7,310 MW
7 Nov, 22:005,758 MW7,282 MW
7 Nov, 23:005,379 MW7,457 MW
8 Nov, 00:006,925 MW7,906 MW
8 Nov, 01:006,636 MW7,331 MW
8 Nov, 02:006,380 MW7,033 MW
8 Nov, 03:006,173 MW7,266 MW
8 Nov, 04:006,046 MW7,372 MW
8 Nov, 05:005,947 MW7,562 MW
8 Nov, 06:006,092 MW7,582 MW
8 Nov, 07:006,245 MW7,693 MW
8 Nov, 08:006,314 MW7,267 MW
8 Nov, 09:006,380 MW7,030 MW
8 Nov, 10:006,486 MW7,135 MW
8 Nov, 11:006,620 MW7,642 MW
8 Nov, 12:006,669 MW7,078 MW
8 Nov, 13:006,433 MW7,632 MW
8 Nov, 14:006,501 MW6,664 MW
8 Nov, 15:006,318 MW7,044 MW
8 Nov, 16:005,831 MW8,114 MW
8 Nov, 17:006,281 MW7,034 MW
8 Nov, 18:007,045 MW6,865 MW
8 Nov, 19:007,230 MW7,303 MW
8 Nov, 20:006,944 MW7,718 MW
8 Nov, 21:006,649 MW7,681 MW
8 Nov, 22:006,272 MW8,290 MW
8 Nov, 23:006,073 MW7,710 MW
9 Nov, 00:006,254 MW7,545 MW
9 Nov, 01:006,576 MW7,622 MW
9 Nov, 02:006,474 MW7,676 MW
9 Nov, 03:006,335 MW7,725 MW
9 Nov, 04:006,373 MW7,541 MW
9 Nov, 05:006,491 MW7,454 MW
9 Nov, 06:006,994 MW7,696 MW
9 Nov, 07:007,307 MW8,633 MW
9 Nov, 08:008,173 MW8,554 MW
9 Nov, 09:008,531 MW8,857 MW
9 Nov, 10:008,490 MW8,822 MW
9 Nov, 11:008,476 MW8,453 MW
9 Nov, 12:008,669 MW8,012 MW
9 Nov, 13:008,353 MW8,142 MW
9 Nov, 14:008,384 MW8,066 MW
9 Nov, 15:008,372 MW8,138 MW
9 Nov, 16:008,465 MW8,027 MW
9 Nov, 17:008,589 MW8,312 MW
9 Nov, 18:008,794 MW8,552 MW
9 Nov, 19:008,747 MW8,690 MW
9 Nov, 20:008,346 MW8,009 MW
9 Nov, 21:007,799 MW7,831 MW
9 Nov, 22:007,259 MW7,325 MW
9 Nov, 23:006,871 MW7,034 MW
10 Nov, 00:006,448 MW6,443 MW
10 Nov, 01:003,605 MW7,057 MW
10 Nov, 02:003,523 MW6,976 MW
10 Nov, 03:003,201 MW6,805 MW
10 Nov, 04:002,816 MW7,120 MW
10 Nov, 05:002,891 MW7,494 MW
10 Nov, 06:003,605 MW7,753 MW
10 Nov, 07:005,383 MW8,824 MW
10 Nov, 08:006,751 MW8,720 MW
10 Nov, 09:006,944 MW8,694 MW
10 Nov, 10:006,894 MW8,184 MW
10 Nov, 11:006,167 MW8,194 MW
10 Nov, 12:006,267 MW7,730 MW
10 Nov, 13:005,883 MW7,939 MW
10 Nov, 14:005,404 MW8,013 MW
10 Nov, 15:005,777 MW8,101 MW
10 Nov, 16:006,211 MW8,134 MW
10 Nov, 17:006,554 MW8,283 MW
10 Nov, 18:006,709 MW8,244 MW
10 Nov, 19:007,003 MW8,334 MW
10 Nov, 20:006,556 MW7,731 MW
10 Nov, 21:005,915 MW7,981 MW
10 Nov, 22:004,586 MW7,375 MW
10 Nov, 23:004,378 MW6,661 MW
11 Nov, 00:006,680 MW6,649 MW
11 Nov, 01:007,320 MW6,896 MW
11 Nov, 02:007,080 MW7,235 MW
11 Nov, 03:007,102 MW7,082 MW
11 Nov, 04:007,020 MW7,205 MW
11 Nov, 05:006,960 MW6,954 MW
11 Nov, 06:007,333 MW7,392 MW
11 Nov, 07:008,153 MW8,109 MW
11 Nov, 08:008,179 MW8,176 MW
11 Nov, 09:008,131 MW8,229 MW
11 Nov, 10:007,953 MW8,018 MW
11 Nov, 11:008,182 MW8,036 MW
11 Nov, 12:007,659 MW7,663 MW
11 Nov, 13:007,806 MW7,808 MW
11 Nov, 14:007,861 MW7,906 MW
11 Nov, 15:007,962 MW7,974 MW
11 Nov, 16:007,788 MW7,657 MW
11 Nov, 17:008,189 MW7,992 MW
11 Nov, 18:008,155 MW8,160 MW
11 Nov, 19:008,249 MW8,221 MW
11 Nov, 20:008,206 MW8,160 MW
11 Nov, 21:007,402 MW7,343 MW
11 Nov, 22:007,022 MW6,631 MW
11 Nov, 23:007,333 MW7,706 MW
12 Nov, 00:006,946 MW7,282 MW
12 Nov, 01:006,794 MW6,570 MW
12 Nov, 02:006,632 MW6,993 MW
12 Nov, 03:006,639 MW7,341 MW
12 Nov, 04:006,777 MW6,621 MW
12 Nov, 05:007,408 MW6,558 MW
12 Nov, 06:007,963 MW7,978 MW
12 Nov, 07:008,662 MW8,729 MW
12 Nov, 08:008,571 MW8,588 MW
12 Nov, 09:008,794 MW8,494 MW
12 Nov, 10:008,317 MW8,317 MW
12 Nov, 11:008,379 MW8,279 MW
12 Nov, 12:008,207 MW8,134 MW
12 Nov, 13:008,063 MW8,014 MW

Assumptions

  • Only hours with both a forecast and a positive demand reading count (686 of 686 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 2026-11-12. 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 2026-11-12. Data from ENTSO-E Transparency Platform.},
  url = {https://worldpowermonitor.com/forecast-accuracy/ch/}
}

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