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Change your light bulbs to LED or CFL bulbs.
This description is about changing your light bulbs to LED or CFL bulbs. LED and CFL bulbs are much more energy efficient than traditional incandescent bulbs, and can help you save money on your energy bills. They also last much longer than traditional bulbs, so you won't have to replace them
From Wikipedia
Incandescent light bulb bans have been enacted by several governments that prohibit the manufacture or importation of incandescent light bulbs for general lighting in favor of more energy-efficient alternatives. The regulations are generally based on efficiency, rather than use of incandescent technology.