energy saving bulb

alternating alternative background bayonette bill bright bubble bulb closeup compact conservation detail eco ecology economic economical economy efficiency efficient electric electrical electricity energy environment environmental equipment fixture florescent flourescent fluorescent glass glow green horizontal idea ideas illuminate illuminated illustration image improvement innovation invention isolated kilowatt lamp light lightbulb low luminosity macro modern new object one plastic power powerful save savings science shadow shape shine shiny single spiral symbol technology transparent tube twist twisted utility watt wattage white