Use natural light wherever possible (e.g. open curtains in the morning instead of turning on the light).
Halogen downlights are energy inefficient to use. Limit their use or replace them with LED globes. If you can’t replace them with downlights, invest in a few table lamps fitted with LED A bulbs to light your space.\
Use efficient lights like LED A globes or Compact Fluorescent Lights (CFL).
Turn off lights when you’re not in the room (fluorescents and low energy lights).
Ensure that outdoor lights are switched off during the day.
Remember light-colored surfaces reflect light and will help illuminate the room.
Use appropriate light levels – don’t over light a room.