In 2020 the total installed wind power capacity was 6.6 GW which is considerably more than the 4.5 GW in 2019. This is mainly due to the increase in offshore wind power from 1 GW to 2.5 GW, following to the planned rollout of the Borssele windfarms. the end of 2024 about 4.5 GW wind power should be installed according to the first road map in the Dutch part of the North Sea. Until 2030 another 6 GW is currently under development according to the second road map bringing total offshore capacity to 11 GW in the Dutch part of the North Sea.
The commissioning of the onshore windfarms is going slowly but steadily towards the 6 GW goal of 2020. In 2020 a total of 4.1 GW was installed. The growth rate in 2020 has increased compared to last year, 537 MW new onshore wind power was installed. The growth however remains being hampered because of the spatial and permit issues and opposition by local residents. More than 6 GW onshore wind power seems unlikely in the Netherlands.
To learn more about wind energy in the Netherlands, please read their chapter in the IEA Wind TCP 2020 Annual Report.