Which light bulbs are most efficient when turned on?

The label shown below will be seen on the packaging of any light bulb that you buy. This label indicates that your light bulb has a 'Class A' rating which means that it's the most efficient. A 'Class G' rating would be the mean that the light bulb is the least efficient.

For example, energy saving lamps are normally rated in 'Class A or B', halogen lamps usually fall into 'Class D', and traditional incandescent lamps into 'Class E or F'

If you want to know exactly what each of these classes mean, click on the link below to check out 'The Energy Information (Lamps) Regulations 1999': http://www.legislation.hmso.gov.uk/si/si1999/19991517.htm

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