Lighting

Turn off unnecessary lights.
Make the most out of natural lighting.
Replace all light globes with energy efficient ones.
Where possible install LED lighting, which last 80 times longer than incandescent globes and will save at least 85 percent of electricity use.
Use the lowest wattage globe wherever possible.
Keep lights and light fittings clean and free from dust. Dust build-up can reduce light output by up to 50 percent.
Avoid down lights. Apart from using more energy, they also contribute to heat loss through the roof.
Use timer controls or sensors to switch lights off automatically.
Paint walls in light colours to reduce the amount of lighting needed.