Calculate Solar Radiation falling on vertical surfaces

[MarcelIgnatius]

I am using ArcGIS10 Area Solar Radiation tool to calculate irradiation on horizontal surfaces (building roofs and ground) but need to do the same for vertical surfaces (building facades/walls). Any ideas on how to do this using ArcGIS and DEMs? I am open to broader suggestions on what tools to use, just needs to run for large portions of a city (neighbourhood scale) at once, instead of building level.

Thanks!
Marcel

[CécileForgue]

Hello Marcel, 

I was wondering if you found a solution to this question since 2012 ?  

I'm also looking for tools about calculating solar irradiation on vertical facades. 

Thank you for letting me know if you found any way to sort it out either with ArcGiS or with another software,

Cécile