Statistics
Page built 2026-10-28
Data as of 2026-10-28
Search
Built 2026-10-28 (28 October 2026)

Norway South-West (NO2) Demand Forecast Accuracy and Bias, 30 September to 28 October 2026

The day-ahead demand forecast for Norway South-West (NO2) was off by 2.0% on average (mean absolute percentage error) over 683 hours from 30 September to 28 October 2026, and 98% of hours landed within 5% of the reading. Its bias was -1.5%: it ran low on average, an under forecast. The largest miss was 289 MW (7.1%) too high at 26 Oct 2026, 19:00 CET (UTC+01:00). Dates and times are local (Europe/Oslo).

Key Facts

  • The day-ahead demand forecast for Norway South-West (NO2) was off by 2.0% on average (mean absolute percentage error) over 683 hours from 30 September to 28 October 2026, and 98% of hours landed within 5% of the reading. Its bias was -1.5%: it ran low on average, an under forecast. The largest miss was 289 MW (7.1%) too high at 26 Oct 2026, 19:00 CET (UTC+01:00).
  • Across 47 European bidding zones ranked by average error over their own latest 30 day windows, Norway South-West (NO2) came 9 (1 is the smallest error).
  • On average the forecast differed from reported demand by 82 MW, against average demand of 4,111 MW.
  • The forecast was above reported demand in 21% of compared hours.

Forecast Error at a Glance

683 hours from 30 September to 28 October 2026
Average error2.0%
Bias-1.5%
Hours within 5%98%
Worst miss289 MW

Average error is the mean absolute percentage gap between the forecast and reported demand. Bias is the signed mean (-62 MW per hour on average): the forecast ran low on average, an under forecast. The worst miss was 289 MW (7.1%) too high at 26 Oct 2026, 19:00 CET (UTC+01:00): forecast 4,355 MW, reported 4,066 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 2026-10-28. 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 28 Oct 2026, 12:00 CET (UTC+01:00)
Norway South-West (NO2) day-ahead demand forecast and reported demand by hour Hourly reported demand and the day-ahead forecast for Norway South-West (NO2) over the last 7 days of the window, to 28 Oct 2026, 12:00 CET (UTC+01:00). Gaps are hours with a missing, zero or implausible report. 0 1,250 2,500 3,750 5,000 21 Oct, 14:0022 Oct, 14:0023 Oct, 14:0024 Oct, 14:0025 Oct, 13:0026 Oct, 13:0027 Oct, 13:00
Hourly reported demand and the day-ahead forecast for Norway South-West (NO2) over the last 7 days of the window, to 28 Oct 2026, 12:00 CET (UTC+01:00). Gaps are hours with a missing, zero or implausible report.
Data to 2026-10-28
Show the data table (168 rows)
Local hourReported demandDay-ahead forecast
21 Oct, 14:004,506 MW4,457 MW
21 Oct, 15:004,536 MW4,471 MW
21 Oct, 16:004,585 MW4,500 MW
21 Oct, 17:004,579 MW4,537 MW
21 Oct, 18:004,603 MW4,556 MW
21 Oct, 19:004,618 MW4,573 MW
21 Oct, 20:004,582 MW4,527 MW
21 Oct, 21:004,497 MW4,417 MW
21 Oct, 22:004,380 MW4,300 MW
21 Oct, 23:004,188 MW4,152 MW
22 Oct, 00:004,046 MW4,024 MW
22 Oct, 01:003,948 MW3,927 MW
22 Oct, 02:003,883 MW3,877 MW
22 Oct, 03:003,845 MW3,858 MW
22 Oct, 04:003,846 MW3,872 MW
22 Oct, 05:003,908 MW3,949 MW
22 Oct, 06:004,143 MW4,170 MW
22 Oct, 07:004,383 MW4,419 MW
22 Oct, 08:004,454 MW4,496 MW
22 Oct, 09:004,426 MW4,448 MW
22 Oct, 10:004,415 MW4,404 MW
22 Oct, 11:004,416 MW4,334 MW
22 Oct, 12:004,369 MW4,287 MW
22 Oct, 13:004,376 MW4,274 MW
22 Oct, 14:004,374 MW4,302 MW
22 Oct, 15:004,390 MW4,314 MW
22 Oct, 16:004,396 MW4,389 MW
22 Oct, 17:004,416 MW4,440 MW
22 Oct, 18:004,474 MW4,475 MW
22 Oct, 19:004,510 MW4,470 MW
22 Oct, 20:004,489 MW4,435 MW
22 Oct, 21:004,458 MW4,325 MW
22 Oct, 22:004,355 MW4,236 MW
22 Oct, 23:004,193 MW4,105 MW
23 Oct, 00:004,072 MW3,951 MW
23 Oct, 01:003,981 MW3,867 MW
23 Oct, 02:003,928 MW3,825 MW
23 Oct, 03:003,896 MW3,817 MW
23 Oct, 04:003,886 MW3,827 MW
23 Oct, 05:003,954 MW3,897 MW
23 Oct, 06:004,200 MW4,114 MW
23 Oct, 07:004,505 MW4,364 MW
23 Oct, 08:004,593 MW4,429 MW
23 Oct, 09:004,578 MW4,422 MW
23 Oct, 10:004,461 MW4,379 MW
23 Oct, 11:004,379 MW4,300 MW
23 Oct, 12:004,314 MW4,250 MW
23 Oct, 13:004,239 MW4,209 MW
23 Oct, 14:004,200 MW4,190 MW
23 Oct, 15:004,214 MW4,196 MW
23 Oct, 16:004,286 MW4,237 MW
23 Oct, 17:004,322 MW4,302 MW
23 Oct, 18:004,400 MW4,349 MW
23 Oct, 19:004,414 MW4,354 MW
23 Oct, 20:004,348 MW4,335 MW
23 Oct, 21:004,262 MW4,246 MW
23 Oct, 22:004,161 MW4,156 MW
23 Oct, 23:004,059 MW4,050 MW
24 Oct, 00:003,986 MW4,037 MW
24 Oct, 01:003,900 MW3,978 MW
24 Oct, 02:003,849 MW3,925 MW
24 Oct, 03:003,835 MW3,884 MW
24 Oct, 04:003,840 MW3,853 MW
24 Oct, 05:003,824 MW3,866 MW
24 Oct, 06:003,857 MW3,955 MW
24 Oct, 07:003,951 MW4,064 MW
24 Oct, 08:004,051 MW4,135 MW
24 Oct, 09:004,149 MW4,198 MW
24 Oct, 10:004,229 MW4,237 MW
24 Oct, 11:004,223 MW4,224 MW
24 Oct, 12:004,202 MW4,214 MW
24 Oct, 13:004,175 MW4,187 MW
24 Oct, 14:004,151 MW4,175 MW
24 Oct, 15:004,155 MW4,185 MW
24 Oct, 16:004,184 MW4,213 MW
24 Oct, 17:004,230 MW4,278 MW
24 Oct, 18:004,262 MW4,319 MW
24 Oct, 19:004,230 MW4,328 MW
24 Oct, 20:004,145 MW4,275 MW
24 Oct, 21:004,071 MW4,161 MW
24 Oct, 22:003,993 MW4,068 MW
24 Oct, 23:003,941 MW3,968 MW
25 Oct, 00:003,855 MW3,883 MW
25 Oct, 01:003,764 MW3,839 MW
25 Oct, 02:003,714 MW3,806 MW
25 Oct, 02:003,730 MW3,801 MW
25 Oct, 03:003,729 MW3,777 MW
25 Oct, 04:003,698 MW3,780 MW
25 Oct, 05:003,701 MW3,820 MW
25 Oct, 06:003,803 MW3,896 MW
25 Oct, 07:003,875 MW3,979 MW
25 Oct, 08:003,961 MW4,013 MW
25 Oct, 09:004,081 MW4,071 MW
25 Oct, 10:004,114 MW4,104 MW
25 Oct, 11:004,102 MW4,095 MW
25 Oct, 12:004,131 MW4,106 MW
25 Oct, 13:004,150 MW4,114 MW
25 Oct, 14:004,157 MW4,136 MW
25 Oct, 15:004,176 MW4,161 MW
25 Oct, 16:004,218 MW4,255 MW
25 Oct, 17:004,293 MW4,315 MW
25 Oct, 18:004,320 MW4,336 MW
25 Oct, 19:004,332 MW4,321 MW
25 Oct, 20:004,311 MW4,256 MW
25 Oct, 21:004,229 MW4,157 MW
25 Oct, 22:004,130 MW4,056 MW
25 Oct, 23:004,001 MWn/a
26 Oct, 00:003,890 MW3,805 MW
26 Oct, 01:003,792 MW3,759 MW
26 Oct, 02:003,750 MW3,734 MW
26 Oct, 03:003,723 MW3,751 MW
26 Oct, 04:003,744 MW3,796 MW
26 Oct, 05:003,839 MW3,907 MW
26 Oct, 06:004,069 MW4,142 MW
26 Oct, 07:004,352 MW4,358 MW
26 Oct, 08:004,417 MW4,383 MW
26 Oct, 09:004,347 MW4,354 MW
26 Oct, 10:004,244 MW4,318 MW
26 Oct, 11:00n/a4,286 MW
26 Oct, 12:004,180 MW4,266 MW
26 Oct, 13:004,201 MW4,250 MW
26 Oct, 14:004,191 MW4,250 MW
26 Oct, 15:004,240 MW4,267 MW
26 Oct, 16:004,365 MW4,293 MW
26 Oct, 17:004,446 MW4,338 MW
26 Oct, 18:004,460 MW4,384 MW
26 Oct, 19:004,066 MW4,355 MW
26 Oct, 20:004,383 MW4,294 MW
26 Oct, 21:004,305 MW4,176 MW
26 Oct, 22:004,207 MW4,062 MW
26 Oct, 23:004,072 MW3,931 MW
27 Oct, 00:003,951 MW3,851 MW
27 Oct, 01:003,869 MW3,780 MW
27 Oct, 02:003,817 MW3,736 MW
27 Oct, 03:003,758 MW3,708 MW
27 Oct, 04:003,725 MW3,738 MW
27 Oct, 05:003,798 MW3,860 MW
27 Oct, 06:003,960 MW4,087 MW
27 Oct, 07:004,250 MW4,314 MW
27 Oct, 08:004,248 MW4,355 MW
27 Oct, 09:004,254 MW4,304 MW
27 Oct, 10:004,314 MW4,254 MW
27 Oct, 11:004,296 MW4,237 MW
27 Oct, 12:004,301 MW4,237 MW
27 Oct, 13:004,288 MW4,208 MW
27 Oct, 14:004,337 MW4,238 MW
27 Oct, 15:004,377 MW4,235 MW
27 Oct, 16:004,453 MW4,288 MW
27 Oct, 17:004,464 MW4,294 MW
27 Oct, 18:004,439 MW4,304 MW
27 Oct, 19:004,436 MW4,275 MW
27 Oct, 20:004,397 MW4,204 MW
27 Oct, 21:004,321 MW4,108 MW
27 Oct, 22:004,210 MW4,009 MW
27 Oct, 23:004,064 MW3,872 MW
28 Oct, 00:003,966 MW3,789 MW
28 Oct, 01:003,899 MW3,741 MW
28 Oct, 02:003,859 MW3,714 MW
28 Oct, 03:003,831 MW3,734 MW
28 Oct, 04:003,828 MW3,733 MW
28 Oct, 05:003,921 MW3,861 MW
28 Oct, 06:004,193 MW4,092 MW
28 Oct, 07:004,441 MW4,318 MW
28 Oct, 08:004,483 MW4,356 MW
28 Oct, 09:004,404 MW4,321 MW
28 Oct, 10:004,391 MW4,284 MW
28 Oct, 11:004,368 MW4,259 MW
28 Oct, 12:004,362 MW4,237 MW

Assumptions

  • Only hours with both a forecast and a positive demand reading count (683 of 685 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). Norway South-West (NO2) Demand Forecast Accuracy and Bias. https://worldpowermonitor.com/forecast-accuracy/no2/

Plain text

World Power Monitor. Norway South-West (NO2) Demand Forecast Accuracy and Bias. Data as of 2026-10-28. Data from ENTSO-E Transparency Platform. https://worldpowermonitor.com/forecast-accuracy/no2/

BibTeX 
@misc{wpm_forecast_accuracy_no2_2026,
  title = {{Norway South-West (NO2) Demand Forecast Accuracy and Bias}},
  author = {{World Power Monitor}},
  year = {2026},
  note = {Data as of 2026-10-28. Data from ENTSO-E Transparency Platform.},
  url = {https://worldpowermonitor.com/forecast-accuracy/no2/}
}

Permalink: https://worldpowermonitor.com/forecast-accuracy/no2/

The Copy buttons add today's date as the access date.