Capacity factors at Danish offshore wind farms

Posted by – 2016/06/25

monthlygenHere are the average capacity factors of every Danish offshore wind farm, newly updated to include data to the end of May 2017. The Anholt 1 windfarm, which only opened in 2013, hit an average capacity factor of 46.6% for the full year 2015. Compare these with the capacity factors for UKoffshore wind farms. 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 12years now, with a lifetime capacity factor of 44.4%; 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 May 2016. Analysis by Raw data from ens.dkLatest
elec. gen.
Rolling annual
capacity factors
(click to enlarge)
Total41.4%41.2%127135 789Total
Anholt 146.2%47.8% 3.2399.65 293Anholt 1
Avedøre Holme39.1%38.7% 5.910.8216Avedøre Holme
Horns Rev I41.0%42.0%13.61608 012Horns Rev I
Horns Rev II38.4%47.9% 6.8209.35 924Horns Rev II
Middelgrunden25.9%25.5%15.4401 380Middelgrunden
Nysted (Rødsand) I38.6%37.3%13.0165.67 015Nysted (Rødsand) I
Nysted (Rødsand) II43.9%44.2% 6.02074 783Nysted (Rødsand) II
Rønland I44.2%44.4%13.417.2895Rønland I
Samsø38.1%39.4%13.3231 058Samsø
Sprogø31.1%35.0% 6.621425Sprogø
Tunø Knob29.4%30.2%21.05278Tunø Knob
Vindeby 8.3%22.6%24.84.95243Vindeby

Calculation method

Just as with the UK offshore windfarm capacity factors, these capacity factors 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.

7 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% […]

  5. […] voor elke individuele Deense windturbine wordt per maand gepubliceerd. Een interessante blog op basis van die gegevens laat zien dat de productiefactor van de nieuwste Deense windparken door […]

  6. […] hier niet of nauwelijks. Om die bewering te staven: er zijn al bestaande windparken in Engeland en Denemarken met een oppervlak in de orde van 100 à 200 vierkante kilometer, waar van de door Miller […]

  7. […] However, it’s hard to separate out variations in wind availability over the years from any operational degradation and technical/operational improvements. Danish offshore load factors from 1980 to 2011 mostly seem to indicate continual improvement: […]

Leave a Reply