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Built 2026-11-12 (12 November 2026)

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

The day-ahead demand forecast for Czechia was off by 1.2% on average (mean absolute percentage error) over 687 hours from 15 October to 12 November 2026, and 99% of hours landed within 5% of the reading. Its bias was -0.2%: 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 1.2% on average (mean absolute percentage error) over 687 hours from 15 October to 12 November 2026, and 99% of hours landed within 5% of the reading. Its bias was -0.2%: 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 93 MW, against average demand of 7,507 MW.
  • The forecast was above reported demand in 43% of compared hours.

Forecast Error at a Glance

687 hours from 15 October to 12 November 2026
Average error1.2%
Bias-0.2%
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 (-10 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 2026-11-12. 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, 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 12 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 5 Nov, 15:006 Nov, 15:007 Nov, 15:008 Nov, 15:009 Nov, 15:0010 Nov, 15:0011 Nov, 15:00
Hourly reported demand and the day-ahead forecast for Czechia over the last 7 days of the window, to 12 Nov 2026, 14:00 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, 15:008,421 MW8,518 MW
5 Nov, 16:008,503 MW8,559 MW
5 Nov, 17:008,612 MW8,762 MW
5 Nov, 18:008,547 MW8,682 MW
5 Nov, 19:008,688 MW8,667 MW
5 Nov, 20:008,395 MW8,434 MW
5 Nov, 21:008,088 MW7,955 MW
5 Nov, 22:007,597 MW7,549 MW
5 Nov, 23:007,240 MW7,159 MW
6 Nov, 00:007,021 MW6,920 MW
6 Nov, 01:006,954 MW6,931 MW
6 Nov, 02:006,863 MW6,835 MW
6 Nov, 03:006,900 MW6,820 MW
6 Nov, 04:007,068 MW6,985 MW
6 Nov, 05:007,654 MW7,547 MW
6 Nov, 06:008,580 MW8,574 MW
6 Nov, 07:008,888 MW8,994 MW
6 Nov, 08:009,165 MW9,263 MW
6 Nov, 09:009,383 MW9,480 MW
6 Nov, 10:009,360 MW9,452 MW
6 Nov, 11:009,477 MW9,416 MW
6 Nov, 12:009,569 MW9,359 MW
6 Nov, 13:009,350 MW9,127 MW
6 Nov, 14:008,840 MW8,689 MW
6 Nov, 15:008,398 MW8,437 MW
6 Nov, 16:008,371 MW8,490 MW
6 Nov, 17:008,532 MW8,643 MW
6 Nov, 18:008,560 MW8,515 MW
6 Nov, 19:008,538 MW8,470 MW
6 Nov, 20:008,127 MW8,216 MW
6 Nov, 21:007,714 MW7,724 MW
6 Nov, 22:007,245 MW7,287 MW
6 Nov, 23:006,821 MW6,881 MW
7 Nov, 00:006,456 MW6,508 MW
7 Nov, 01:006,351 MW6,404 MW
7 Nov, 02:006,402 MW6,424 MW
7 Nov, 03:006,500 MW6,464 MW
7 Nov, 04:006,535 MW6,525 MW
7 Nov, 05:006,556 MW6,671 MW
7 Nov, 06:006,807 MW6,927 MW
7 Nov, 07:007,171 MW7,289 MW
7 Nov, 08:007,572 MW7,748 MW
7 Nov, 09:008,080 MW8,206 MW
7 Nov, 10:008,433 MW8,512 MW
7 Nov, 11:008,455 MW8,590 MW
7 Nov, 12:008,266 MW8,404 MW
7 Nov, 13:008,062 MW8,173 MW
7 Nov, 14:007,610 MW7,775 MW
7 Nov, 15:007,408 MW7,512 MW
7 Nov, 16:007,471 MW7,517 MW
7 Nov, 17:007,479 MW7,659 MW
7 Nov, 18:007,466 MW7,660 MW
7 Nov, 19:007,479 MW7,618 MW
7 Nov, 20:007,421 MW7,457 MW
7 Nov, 21:007,134 MW7,151 MW
7 Nov, 22:006,880 MW6,948 MW
7 Nov, 23:006,618 MW6,669 MW
8 Nov, 00:006,253 MW6,313 MW
8 Nov, 01:006,169 MW6,197 MW
8 Nov, 02:006,167 MW6,211 MW
8 Nov, 03:006,182 MW6,215 MW
8 Nov, 04:006,306 MW6,286 MW
8 Nov, 05:006,382 MW6,340 MW
8 Nov, 06:006,604 MW6,514 MW
8 Nov, 07:006,966 MW6,877 MW
8 Nov, 08:007,390 MW7,309 MW
8 Nov, 09:007,905 MW7,866 MW
8 Nov, 10:008,227 MW8,237 MW
8 Nov, 11:008,368 MW8,376 MW
8 Nov, 12:008,216 MW8,205 MW
8 Nov, 13:008,002 MW8,020 MW
8 Nov, 14:007,712 MW7,720 MW
8 Nov, 15:007,537 MW7,521 MW
8 Nov, 16:007,648 MW7,578 MW
8 Nov, 17:007,809 MW7,787 MW
8 Nov, 18:007,688 MW7,910 MW
8 Nov, 19:007,746 MW7,871 MW
8 Nov, 20:007,737 MW7,717 MW
8 Nov, 21:007,477 MW7,417 MW
8 Nov, 22:007,311 MW7,288 MW
8 Nov, 23:007,040 MW7,073 MW
9 Nov, 00:006,886 MW6,890 MW
9 Nov, 01:006,950 MW6,924 MW
9 Nov, 02:006,732 MW6,800 MW
9 Nov, 03:006,677 MW6,801 MW
9 Nov, 04:006,888 MW6,976 MW
9 Nov, 05:007,455 MW7,580 MW
9 Nov, 06:008,413 MW8,675 MW
9 Nov, 07:008,899 MW9,133 MW
9 Nov, 08:009,178 MW9,358 MW
9 Nov, 09:009,443 MW9,540 MW
9 Nov, 10:009,416 MW9,513 MW
9 Nov, 11:009,609 MW9,558 MW
9 Nov, 12:009,788 MW9,588 MW
9 Nov, 13:009,787 MW9,470 MW
9 Nov, 14:009,219 MW9,132 MW
9 Nov, 15:009,190 MW8,925 MW
9 Nov, 16:008,904 MW8,962 MW
9 Nov, 17:008,961 MW9,118 MW
9 Nov, 18:008,945 MW9,033 MW
9 Nov, 19:008,785 MW8,975 MW
9 Nov, 20:008,406 MW8,665 MW
9 Nov, 21:007,984 MW8,185 MW
9 Nov, 22:007,602 MW7,778 MW
9 Nov, 23:007,220 MW7,337 MW
10 Nov, 00:006,998 MW6,968 MW
10 Nov, 01:006,903 MW6,967 MW
10 Nov, 02:006,815 MW6,833 MW
10 Nov, 03:006,751 MW6,790 MW
10 Nov, 04:006,868 MW6,977 MW
10 Nov, 05:007,381 MW7,553 MW
10 Nov, 06:008,534 MW8,615 MW
10 Nov, 07:008,921 MW9,095 MW
10 Nov, 08:009,025 MW9,308 MW
10 Nov, 09:009,347 MW9,459 MW
10 Nov, 10:009,565 MW9,462 MW
10 Nov, 11:009,624 MW9,520 MW
10 Nov, 12:009,598 MW9,593 MW
10 Nov, 13:009,534 MW9,559 MW
10 Nov, 14:009,182 MW9,260 MW
10 Nov, 15:009,136 MW9,110 MW
10 Nov, 16:008,997 MW9,076 MW
10 Nov, 17:009,063 MW9,123 MW
10 Nov, 18:008,978 MW8,957 MW
10 Nov, 19:008,838 MW8,880 MW
10 Nov, 20:008,453 MW8,571 MW
10 Nov, 21:008,062 MW8,109 MW
10 Nov, 22:007,721 MW7,704 MW
10 Nov, 23:007,383 MW7,316 MW
11 Nov, 00:007,112 MW7,037 MW
11 Nov, 01:007,106 MW7,037 MW
11 Nov, 02:007,018 MW6,916 MW
11 Nov, 03:007,019 MW6,901 MW
11 Nov, 04:007,115 MW7,039 MW
11 Nov, 05:007,619 MW7,614 MW
11 Nov, 06:008,835 MW8,667 MW
11 Nov, 07:009,228 MW9,101 MW
11 Nov, 08:009,341 MW9,322 MW
11 Nov, 09:009,512 MW9,502 MW
11 Nov, 10:009,520 MW9,525 MW
11 Nov, 11:009,559 MW9,589 MW
11 Nov, 12:009,598 MW9,684 MW
11 Nov, 13:009,542 MW9,653 MW
11 Nov, 14:009,394 MW9,355 MW
11 Nov, 15:009,310 MW9,225 MW
11 Nov, 16:009,154 MW9,156 MW
11 Nov, 17:009,080 MW9,162 MW
11 Nov, 18:008,746 MW8,955 MW
11 Nov, 19:008,857 MW8,855 MW
11 Nov, 20:008,458 MW8,500 MW
11 Nov, 21:007,985 MW8,003 MW
11 Nov, 22:007,560 MW7,559 MW
11 Nov, 23:007,219 MW7,107 MW
12 Nov, 00:006,843 MW6,812 MW
12 Nov, 01:006,913 MW6,777 MW
12 Nov, 02:006,850 MW6,656 MW
12 Nov, 03:006,819 MW6,631 MW
12 Nov, 04:006,814 MW6,775 MW
12 Nov, 05:007,340 MW7,331 MW
12 Nov, 06:008,388 MW8,367 MW
12 Nov, 07:008,766 MW8,788 MW
12 Nov, 08:008,991 MW9,000 MW
12 Nov, 09:009,066 MW9,135 MW
12 Nov, 10:009,093 MW9,127 MW
12 Nov, 11:009,206 MW9,178 MW
12 Nov, 12:009,218 MW9,241 MW
12 Nov, 13:009,174 MW9,174 MW
12 Nov, 14:008,851 MW8,866 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 2026-11-12. 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 2026-11-12. Data from ENTSO-E Transparency Platform.},
  url = {https://worldpowermonitor.com/forecast-accuracy/cz/}
}

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