You may think there is nothing wrong with it but no here are some things that could do you no good

- It has been rainy all week and no sun and at night there is no sun as you know 

-And the calculator you feel like using it secretly what would you do?

-The cost can be quite outrageous even though it can do you good in the end. 

-During winters, solar collectors can not produce more energy than the home is using while during summers solar collectors can produce more energy than the home uses.

-What happens if they get covered in snow, ice and maybe even dust then, what do you  do?