Does Concentrated PV (CPV) technology work on cloudy days?

Concentrated PV (CPV) technology relies on lenses or mirrors to focus sunlight onto a small area of solar cells, which enhances the efficiency of electricity generation. For CPV systems to operate effectively, a direct and concentrated beam of sunlight is essential. On cloudy days, the clouds impede the direct sunlight needed for concentration, resulting in significantly reduced power output.

This limitation is due to the fact that CPV is not designed to capture diffuse sunlight, which is what typically filters through the clouds. As a result, CPV performance can dramatically decline in overcast conditions, making it largely ineffective during those times.

The other options suggest scenarios in which CPV might function under suboptimal conditions or specific times of day, but in reality, the fundamental requirement for concentrated light is not met, hence the assertion that CPV does not work on cloudy days is accurate.