Capacity factors at Danish offshore wind farms

Posted by – 2014/09/23

Here are the average capacity factors of every Danish offshore wind farm, newly updated to include data to the end of September 2014. The Anholt 1 windfarm, which only opened in 2013, hit an average capacity factor of 51.1% for the last 12 months. 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.

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 September 2014. Analysis by Raw data from
Rolling annual
capacity factors
(click to enlarge)
Total47.0%40.2%127127 483Total
Anholt 151.1%47.4% 1.5399.62 480Anholt 1
Avedøre Holme39.3%37.3% 4.210.8150Avedøre Holme
Horns Rev I47.8%41.6%11.91606 954Horns Rev I
Horns Rev II52.7%48.6% 5.1209.34 527Horns Rev II
Middelgrunden25.0%25.3%13.8401 219Middelgrunden
Nysted (Rødsand) I40.8%36.9%11.3165.66 041Nysted (Rødsand) I
Nysted (Rødsand) II45.9%43.4% 4.32073 378Nysted (Rødsand) II
Rønland I43.9%44.1%11.717.2779Rønland I
Sprogø36.5%35.0% 4.921317Sprogø
Tunø Knob31.9%30.0%19.45254Tunø 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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