Wind Rose only marking north


I am having some trouble with the wind information for Barcelona. I am not sure whether I am doing something wrong or there is an internal problem with the epw file. It looks as if there were only northern winds? The other types of information (temperature, sunpath…) seem correct to me. I wish someone could help me! Thank you in advance!


Hi jirigarayb,

Unfortuantely some, if not most, of the epws from the Spanish Weather for Energy Calculations (SWEC) have this problem with wind direction - they just don´t have it and I guess they fill it with north wind (0 wind direction). Perhaps the weather data from IWEC, might be useful.


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It worked with the IWEC epw file. Thanks!