Decorative lighting. This adds visual sparkle. Whitehead advises using a single pendant in a square-shaped bathroom for just the right touch.
In a renovation on the other hand we have to consider what effect a new skylight will have on the efficiency of the existing building. In some cases the additional sunlight (and therefore heat) can help reduce the amount of energy needed to heat the house. It depends greatly on the local climate but also on the design of the building envelope of the house.
Translucent glass shades on pendant fixtures will reduce glare in the kitchen. Hanging overhead lighting fixtures such as pendants should sit 30 to 36 inches above the island work surface.