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Built 2026-11-05 (5 November 2026)

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

The day-ahead demand forecast for Czechia was off by 1.3% on average (mean absolute percentage error) over 687 hours from 8 October to 5 November 2026, and 99% of hours landed within 5% of the reading. Its bias was -0.1%: it ran close to balanced on average. The largest miss was 534 MW (6.8%) too high at 30 Oct 2026, 07:00 CET (UTC+01:00). Dates and times are local (Europe/Prague).

Key Facts

  • The day-ahead demand forecast for Czechia was off by 1.3% on average (mean absolute percentage error) over 687 hours from 8 October to 5 November 2026, and 99% of hours landed within 5% of the reading. Its bias was -0.1%: it ran close to balanced on average. The largest miss was 534 MW (6.8%) too high at 30 Oct 2026, 07:00 CET (UTC+01:00).
  • Across 47 European bidding zones ranked by average error over their own latest 30 day windows, Czechia came 4 (1 is the smallest error).
  • On average the forecast differed from reported demand by 95 MW, against average demand of 7,253 MW.
  • The forecast was above reported demand in 44% of compared hours.

Forecast Error at a Glance

687 hours from 8 October to 5 November 2026
Average error1.3%
Bias-0.1%
Hours within 5%99%
Worst miss534 MW

Average error is the mean absolute percentage gap between the forecast and reported demand. Bias is the signed mean (-7 MW per hour on average): the forecast ran close to balanced on average. The worst miss was 534 MW (6.8%) too high at 30 Oct 2026, 07:00 CET (UTC+01:00): forecast 8,437 MW, reported 7,903 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, 14:00 CET (UTC+01:00)
Czechia day-ahead demand forecast and reported demand by hour Hourly reported demand and the day-ahead forecast for Czechia over the last 7 days of the window, to 5 Nov 2026, 14:00 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, 15:0030 Oct, 15:0031 Oct, 15:001 Nov, 15:002 Nov, 15:003 Nov, 15:004 Nov, 15:00
Hourly reported demand and the day-ahead forecast for Czechia over the last 7 days of the window, to 5 Nov 2026, 14:00 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, 15:008,154 MW8,147 MW
29 Oct, 16:007,891 MW8,025 MW
29 Oct, 17:007,995 MW8,216 MW
29 Oct, 18:008,012 MW8,094 MW
29 Oct, 19:007,983 MW8,056 MW
29 Oct, 20:007,673 MW7,756 MW
29 Oct, 21:007,208 MW7,321 MW
29 Oct, 22:006,834 MW6,946 MW
29 Oct, 23:006,481 MW6,595 MW
30 Oct, 00:006,248 MW6,358 MW
30 Oct, 01:006,302 MW6,414 MW
30 Oct, 02:006,216 MW6,297 MW
30 Oct, 03:006,173 MW6,272 MW
30 Oct, 04:006,291 MW6,429 MW
30 Oct, 05:006,704 MW6,967 MW
30 Oct, 06:007,476 MW8,006 MW
30 Oct, 07:007,903 MW8,437 MW
30 Oct, 08:008,261 MW8,645 MW
30 Oct, 09:008,573 MW8,833 MW
30 Oct, 10:008,624 MW8,847 MW
30 Oct, 11:008,753 MW8,887 MW
30 Oct, 12:008,821 MW8,876 MW
30 Oct, 13:008,677 MW8,766 MW
30 Oct, 14:008,317 MW8,414 MW
30 Oct, 15:008,088 MW8,186 MW
30 Oct, 16:007,920 MW8,049 MW
30 Oct, 17:007,905 MW8,204 MW
30 Oct, 18:007,823 MW8,015 MW
30 Oct, 19:007,769 MW7,901 MW
30 Oct, 20:007,372 MW7,560 MW
30 Oct, 21:006,921 MW7,071 MW
30 Oct, 22:006,507 MW6,641 MW
30 Oct, 23:006,125 MW6,261 MW
31 Oct, 00:005,785 MW5,739 MW
31 Oct, 01:005,589 MW5,621 MW
31 Oct, 02:005,611 MW5,590 MW
31 Oct, 03:005,731 MW5,604 MW
31 Oct, 04:005,751 MW5,630 MW
31 Oct, 05:005,876 MW5,751 MW
31 Oct, 06:006,006 MW5,996 MW
31 Oct, 07:006,296 MW6,347 MW
31 Oct, 08:006,755 MW6,777 MW
31 Oct, 09:007,221 MW7,235 MW
31 Oct, 10:007,506 MW7,564 MW
31 Oct, 11:007,771 MW7,769 MW
31 Oct, 12:007,695 MW7,683 MW
31 Oct, 13:007,671 MW7,576 MW
31 Oct, 14:007,372 MW7,281 MW
31 Oct, 15:007,130 MW7,085 MW
31 Oct, 16:007,043 MW6,982 MW
31 Oct, 17:007,087 MW7,077 MW
31 Oct, 18:006,986 MW6,979 MW
31 Oct, 19:006,944 MW6,872 MW
31 Oct, 20:006,751 MW6,626 MW
31 Oct, 21:006,371 MW6,328 MW
31 Oct, 22:006,155 MW6,111 MW
31 Oct, 23:005,886 MW5,833 MW
1 Nov, 00:005,583 MW5,454 MW
1 Nov, 01:005,483 MW5,343 MW
1 Nov, 02:005,472 MW5,320 MW
1 Nov, 03:005,506 MW5,366 MW
1 Nov, 04:005,581 MW5,396 MW
1 Nov, 05:005,553 MW5,458 MW
1 Nov, 06:005,736 MW5,591 MW
1 Nov, 07:006,079 MW5,969 MW
1 Nov, 08:006,549 MW6,452 MW
1 Nov, 09:007,051 MW6,984 MW
1 Nov, 10:007,462 MW7,414 MW
1 Nov, 11:007,669 MW7,616 MW
1 Nov, 12:007,534 MW7,491 MW
1 Nov, 13:007,437 MW7,400 MW
1 Nov, 14:007,174 MW7,122 MW
1 Nov, 15:007,022 MW6,945 MW
1 Nov, 16:007,021 MW6,891 MW
1 Nov, 17:007,145 MW7,145 MW
1 Nov, 18:007,150 MW7,178 MW
1 Nov, 19:007,199 MW7,139 MW
1 Nov, 20:007,049 MW6,958 MW
1 Nov, 21:006,749 MW6,696 MW
1 Nov, 22:006,595 MW6,567 MW
1 Nov, 23:006,375 MW6,315 MW
2 Nov, 00:006,197 MW6,211 MW
2 Nov, 01:006,242 MW6,241 MW
2 Nov, 02:006,129 MW6,115 MW
2 Nov, 03:006,128 MW6,091 MW
2 Nov, 04:006,256 MW6,272 MW
2 Nov, 05:006,788 MW6,879 MW
2 Nov, 06:007,929 MW8,011 MW
2 Nov, 07:008,422 MW8,441 MW
2 Nov, 08:008,670 MW8,684 MW
2 Nov, 09:008,817 MW8,867 MW
2 Nov, 10:008,955 MW8,865 MW
2 Nov, 11:008,954 MW8,943 MW
2 Nov, 12:009,179 MW9,004 MW
2 Nov, 13:009,165 MW8,934 MW
2 Nov, 14:008,762 MW8,615 MW
2 Nov, 15:008,668 MW8,437 MW
2 Nov, 16:008,735 MW8,347 MW
2 Nov, 17:008,758 MW8,509 MW
2 Nov, 18:008,687 MW8,387 MW
2 Nov, 19:008,566 MW8,339 MW
2 Nov, 20:008,181 MW8,040 MW
2 Nov, 21:007,716 MW7,570 MW
2 Nov, 22:007,246 MW7,160 MW
2 Nov, 23:006,814 MW6,754 MW
3 Nov, 00:006,521 MW6,452 MW
3 Nov, 01:006,562 MW6,462 MW
3 Nov, 02:006,484 MW6,341 MW
3 Nov, 03:006,396 MW6,321 MW
3 Nov, 04:006,541 MW6,491 MW
3 Nov, 05:007,120 MW7,065 MW
3 Nov, 06:008,228 MW8,168 MW
3 Nov, 07:008,635 MW8,557 MW
3 Nov, 08:008,883 MW8,762 MW
3 Nov, 09:009,106 MW8,918 MW
3 Nov, 10:009,167 MW8,933 MW
3 Nov, 11:009,206 MW8,994 MW
3 Nov, 12:009,392 MW9,060 MW
3 Nov, 13:009,362 MW9,021 MW
3 Nov, 14:009,095 MW8,753 MW
3 Nov, 15:009,016 MW8,611 MW
3 Nov, 16:008,916 MW8,520 MW
3 Nov, 17:008,960 MW8,641 MW
3 Nov, 18:008,831 MW8,505 MW
3 Nov, 19:008,713 MW8,427 MW
3 Nov, 20:008,309 MW8,102 MW
3 Nov, 21:007,874 MW7,638 MW
3 Nov, 22:007,407 MW7,215 MW
3 Nov, 23:006,994 MW6,806 MW
4 Nov, 00:006,712 MW6,637 MW
4 Nov, 01:006,720 MW6,639 MW
4 Nov, 02:006,593 MW6,520 MW
4 Nov, 03:006,517 MW6,505 MW
4 Nov, 04:006,594 MW6,667 MW
4 Nov, 05:007,166 MW7,244 MW
4 Nov, 06:008,255 MW8,326 MW
4 Nov, 07:008,579 MW8,720 MW
4 Nov, 08:008,863 MW8,918 MW
4 Nov, 09:009,076 MW9,077 MW
4 Nov, 10:009,114 MW9,064 MW
4 Nov, 11:009,139 MW9,105 MW
4 Nov, 12:009,252 MW9,167 MW
4 Nov, 13:009,231 MW9,089 MW
4 Nov, 14:008,757 MW8,783 MW
4 Nov, 15:008,631 MW8,617 MW
4 Nov, 16:008,514 MW8,572 MW
4 Nov, 17:008,723 MW8,756 MW
4 Nov, 18:008,720 MW8,650 MW
4 Nov, 19:008,688 MW8,597 MW
4 Nov, 20:008,303 MW8,296 MW
4 Nov, 21:007,990 MW7,834 MW
4 Nov, 22:007,509 MW7,415 MW
4 Nov, 23:007,118 MW7,024 MW
5 Nov, 00:006,886 MW6,759 MW
5 Nov, 01:006,925 MW6,776 MW
5 Nov, 02:006,813 MW6,666 MW
5 Nov, 03:006,871 MW6,636 MW
5 Nov, 04:006,951 MW6,801 MW
5 Nov, 05:007,546 MW7,386 MW
5 Nov, 06:008,624 MW8,481 MW
5 Nov, 07:008,995 MW8,920 MW
5 Nov, 08:009,165 MW9,165 MW
5 Nov, 09:009,412 MW9,328 MW
5 Nov, 10:009,442 MW9,295 MW
5 Nov, 11:009,350 MW9,307 MW
5 Nov, 12:009,341 MW9,303 MW
5 Nov, 13:009,060 MW9,138 MW
5 Nov, 14:008,625 MW8,756 MW

Assumptions

  • Only hours with both a forecast and a positive demand reading count (687 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). Czechia Demand Forecast Accuracy: Error, Bias and Worst Miss. https://worldpowermonitor.com/forecast-accuracy/cz/

Plain text

World Power Monitor. Czechia 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/cz/

BibTeX 
@misc{wpm_forecast_accuracy_cz_2026,
  title = {{Czechia 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/cz/}
}

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