Natural-daylight homes optimize window placement to harvest natural light in the home. This warms and brightens interiors while reducing energy usage for artificial lighting. Even in rooms with no windows, solar tubes can be installed to bring daylight into the home. Well-designed homes emphasize views while using sunlight for free lighting and avoiding glare and overheating.  Overhangs, fixed shades, louvers, screens, and films are all tools to help control sunlight.