bright
bulb
compact
concept
conservation
conserve
consumption
eco
ecology
economic
economical
economy
efficiency
efficient
electric
electrical
electricity
energy
environment
environmental
equipment
florescent
fluorescent
friendly
glass
green
idea
illuminated
illumination
industry
innovation
invention
lamp
light
lightbulb
low energy
luminosity
modern
object
power
save
solution
spiral
technology
tube
white