CFLs use up to 80% less energy for the same light output as a conventional incandescent lamp. Over a 15-year period this will save one megawatt hour (1MWh) of electricity and half a tonne of CO emissions.
Lighting accounts for 20% of all electrical energy usage. It is therefore not surprising that in the drive to reduce energy consumption, lighting has attracted a lot of attention.
The need to reduce energy consumption has affected both domestic and commercial buildings, with the lighting industry bringing out more efficient lamps, better fittings to focus the light where it is most needed, more efficient control gear and control systems to better manage its switching and/or dimming.
Lamps