What about your solution will eliminate wasted energy?
Heat gain through the windows of your building can cause energy waste by putting more demands on your cooling equipment. Heat gain occurs when sunlight enters your structure and increases indoor temperatures. You can reduce heat gain by:
Installing adjustable shades or window blinds to block sunlight when necessary.
Adding window treatments and films that block sunlight or reflect it away from your windows.
Constructing awnings that shade windows and prevent sunlight from reaching them.