Hi @mostapha!
Thanks for taking a look.
The issue here is that with ladaybug I have understandable results, while when I use honeybee, with gencomulativesky component to run the annual radiation on a sphere, I get quite odd results. Although I use the same EPW, the results I get from ladybug and honeybee are way off.
An educated guess here is that there could be an issue with the gencomulative sky component.
I know that the comulative sky function approximate the position of the sun, but I think here the error is not cause by this.
The file I am working on along with the EPW files are uploaded at the top of the post, if you can have a closer look.
Thanks for the support.
best regards,
Federico