> there isn't a lot of long term data on how well they hold up yet. Whats your definition of long term? 26 years[1] is definitely getting there for me. A par

> there isn't a lot of long term data on how well they hold up yet. Whats your definition of long term? 26 years[1] is definitely getting there for me. A part of the reason for that first farm being decomissioned is because new generation turbines are capable of generating more energy than the entire farm[2]. So maintenance costs per kWh are higher than the new gear. [1] https://en.wikipedia.org/wiki/Vindeby_Offshore_Wind_Farm https://en.wikipedia.org/wiki/Vindeby_Offshore_Wind_Farm [2] http://www.4coffshore.com/windfarms/dong-to-dismantle-vindeby-nid3279.html http://www.4coffshore.com/windfarms/dong-to-dismantle-vindeb...