Impact on Performance
Soiling measurements were conducted measuring nominal power before and after cleaning at irradiations higher than 900 W/m2. The estimated soiling factor is in the range of 5-6%.
The losses due to near shadings could represent 2.3% less irradiance loss, based on a representative simulation.
Due to the limited access to the rooftop (staircases) it is likely that the modules suffered increased mechanical loads during transportation, handling and installation. The amount and type of cracks discovered via EL, as well as the snail trail distribution, could be an indicator of a performance drop between 5-10%.