A brief summer update! A new paper has just been published in Solar Energy Materials and Solar Cells, on the spectral effects of soiling on CPV systems. It can be accessed for free (for limited time) at authors.elsevier.com/a/1ZXlk3In-93NWT. The paper shows how blue-rich irradiance conditions, which are generally more favourable for CPV (see here), can mitigate the spectral impact of soiling. Also, it suggests that soiling might have lower impact on four or more junction cell