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How many people does it take to change a light bulb?

Panel: Panel 4: Human dimensions of energy use and efficiency

Author:
Jane Palmer, Environmental Change Unit

Abstract

The behavioural aspects of domestic lighting, such as purchasing and usage patterns and perceptions of what constitutes a desirable level of lighting, are major determinants of consumption levels. This is probably more so for lighting than for any other appliance group.

This paper examines the UK domestic lighting sector, based on a comparative analysis of two current projects: the Billsavers project, managed by LEEP (Lothian and Edinburgh Environmental Partnership), and a SAVE project undertaken by the UK? Electricity Association.

Preliminary findings show large disparities in the quantity, quality and use of lighting in people? homes. For example, LEEP found light bulb ownership ranging from one to sixty light bulbs across income groups. Similarly, thirteen percent of low-income households have no portable light fittings, whereas all houses in the higher income groups have portable fittings. Regarding use, the Electricity Association found, on average, a continuous low level of lighting demand across their sample throughout the day and night. This may be due to security lighting or the existence of rooms which always require artificial light.

It is hoped that a better understanding of the factors underlying such differences in purchasing, installation and usage will provide a sound basis from which to evaluate policy options and assess potential energy savings for this important sector.

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