The label below shows the classification of a lightbulb's electrical consumption relative to a standard (GLS or incandescent) light bulb that produces the same amount of brightness (lumen).
|Class A & B
||Energy savers fall in to these categories.
They are the most efficient type of light bulb and use up to 80% less energy than standard GLS light bulbs.
||Mains voltage halogen bulbs usually fall into this category.
|Class E & F
||Standard incandescent light bulbs are the least efficient alternatives.