Capacity factors at Danish offshore wind farms

Posted by – 2014/09/23

Thanks to the wonderful statisticians and data managers at ENS and Energinet.DK, we have a large amount of detailed data from Danish onshore and offshore wind farms. Here’s one quick cut of it: the average capacity factors, to date of every Danish offshore wind farm, newly updated to include data to the end of August 2014. The Anholt 1 windfarm, which only opened in 2013, hit an average capacity factor of 51.1% for the last 12 months.

Danish windfarms also include the most productive wind turbines in the world, at Rønland I: the turbines have been operating for over 11 years now, with a lifetime capacity factor of 44.2%; of its eight turbines, four are rated at 2.3MW peak power, and each of those four had by the end of July 2014 generated over 100 GWh: the first turbines to pass that milestone.

All numbers are to the end of August 2014. Analysis by Raw data from
Rolling annual
capacity factors
(click to enlarge)
Total47.1%40.3%127127 162Total
Anholt 151.1%48.0% 1.4399.62 373Anholt 1
Avedøre Holme39.5%37.5% 4.210.8148Avedøre Holme
Horns Rev I48.2%41.6%11.91606 916Horns Rev I
Horns Rev II53.1%48.7% 5.0209.34 470Horns Rev II
Middelgrunden24.7%25.3%13.7401 213Middelgrunden
Nysted (Rødsand) I40.6%36.9%11.2165.66 004Nysted (Rødsand) I
Nysted (Rødsand) II45.7%43.5% 4.22073 322Nysted (Rødsand) II
Rønland I43.7%44.2%11.617.2775Rønland I
Sprogø36.6%35.1% 4.821313Sprogø
Tunø Knob31.9%30.0%19.35253Tunø Knob

Calculation method

The capacity figures are calculated by calculating, for each turbine in a given wind farm, the number of hours since it was first connected to the grid. This is then multiplied by its capacity, to give the number of peak-MW-hours. These figures are summed across all turbines in a wind farm, and divided into the total energy generated by that wind farm, to give its capacity factor.


ENS register of Danish wind turbines: thanks to ENS and to Energinet.DK for making the turbine-specific data behind this table available.

4 Comments on Capacity factors at Danish offshore wind farms

  1. Now:: Capacity factors at Danish offshore wind farms #offshorewind

  2. RT @EnergyNumbers: 40%+ capacity factors at Danish offshore wind farms #offshorewind

  3. […] visar på en betydligt högre utnyttjandegrad än vad man tidigare har antagit. Vindkraftparken Horns Rev 2 hade en kapacitetsfaktor på 52 %, vilket är […]

  4. […] capacity the entire time. See Energy Nos., Capacity Factors at Danish Offshore Wind Farms, (last visited Nov. 18, 2012). Newer European offshore wind farms can achieve between 44% and 48% […]

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