The Light-Soaking Effect

CIS modules react to sunlight, increasing their power output

After exposure to light, CIS modules undergo a phenomenon called the light-soaking effect during the first few days of operation. This increases their actual power rating compared to their initial labelled value. You could even say that they’ve “warmed up” for the job.

Once CIS modules have undergone the light-soaking effect, they will then continue to perform at a higher power rating before degrading over time like other solar panels. This is one of the reasons that CIS modules can generate higher energy yield – or kilowatt-hours per kilowatt-peak – than crystalline silicon panels.

* Impact of light soaking effect can vary.