If the solar panels don't get sun light for 24 hours, it's not possible to collect power for 24 hours a day. Power collection depends on the geographical area as well as weather. Power generation is less in rainy and cloudy days. If a sunny day, you will get 6 hours to collect power which is quite good. You will get less power if you live in southern or northern hemisphere compared to central areas. Use panels from best solar products companies so that more power is generated in less time.