18 Month Mast Data Usage in WaSP?

[ata]

Hi,

I have 18 month wind data available. To calculate the AEP, can i use the whole 18 month data? Or do i need to pick best 12 month period considering the data loss and use it?

Thank you.

[Rogier]

Dear Ata,
We usually recommend to take 12 months of data, even if you have more available. This is to avoid any seasonal dependence in the sampled wind data: for example in Denmark the wind speed during winter months can be about 50% higher than during summer, so if you would include two winter and one summer in your data you will end up with a large bias in your final AEP calculation.
Regards
Rogier Floors