Seems like not that much power. I guess you could build this into solar panels (some kind of coating?) so that they generate power when it rains too so that the

Seems like not that much power. I guess you could build this into solar panels (some kind of coating?) so that they generate power when it rains too so that the percentage of time the panel generates power is higher. But would the decrease in efficiency justify it or would it decrease the overall wattage produced? Maybe in places where it rains a lot, like Seattle, that would be worth it to increase the percentage of time it is producing power?