This page shows daily plots of forecast grid data for offshore wind energy in Belgium, year 2020. We use quarter hour forecast data from Elia, which is corrected with up-scaled measurement data for the monitored capacity. The monitored capacity can deviate from the installed capacity; and it can change over time. Therefore values normalized to kWh/day per kWpeak, and also hourly fluctuations are provided. In general grid forecast data is more accurate than weather re-analysis from satellite data.

offshore	2020	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Monitored capacity (GWpeak)	1.77	1.55	1.56	1.61	1.61	1.67	1.67	1.67	1.68	1.89	2.02	2.08	2.16
Cumulative energy (GWh)	6732	628	1432	2134	2475	2894	3255	3626	3982	4419	5300	5939	6732
Monthly energy (GWh)	6732	628	803	702	340	419	361	371	357	437	881	639	793
Normalized cumulative sum (kWh/kWpeak)	3810	406	921	1358	1569	1820	2036	2257	2470	2701	3137	3444	3810
Normalized monthly energy (kWh/kWpeak)	3810	406	515	437	211	251	216	222	212	231	436	308	366
Normalized cumulative distribution [%]	100 %	10.7 %	24.2 %	35.6 %	41.2 %	47.8 %	53.4 %	59.2 %	64.8 %	70.9 %	82.3 %	90.4 %	100 %
Normalized monthly distribution [%]	100 %	10.7 %	13.5 %	11.5 %	5.53 %	6.58 %	5.67 %	5.82 %	5.58 %	6.05 %	11.4 %	8.07 %	9.61 %
Capacity factor [%]	43.4 %	54.6 %	74.0 %	58.8 %	29.3 %	33.7 %	30.0 %	29.8 %	28.6 %	32.0 %	58.5 %	42.7 %	49.2 %

Average hourly data:
The plots below show hourly data, normalized to kiloWatt per installed capacity expressed in kiloWatt peak. The Elia grid data contains four data points per hour, these are averaged to represent a single hour on the plot. So the hour 14 combines data points from 14:00, 14:15, 14:30 and 14:45 for example. In the legend we display the avarage daily generated energy in kWhpeak per month. The maximum achievable energy per day is 24 kWh per kWpeak of installed capacity, since there are 24 hours in a day. Fluctuations are summarized with boxplots for the entire year and per month.

Acknowledgement: many thanks to Elia for open access to offshore wind grid data of Belgium at www.elia.be/en/grid-data. This data is licensed under the Elia Open Data License, which uses the CC BY-4.0 public license, and is governed by Belgian law.

User guide: most of the figures on this page are dynamic boxplots. A png image can be downloaded with the pop-up window at the right upper side. These functions require that javascript is enabled. Boxplots are explained here.