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Journal of Energy in Southern Africa

versión On-line ISSN 2413-3051
versión impresa ISSN 1021-447X

J. energy South. Afr. vol.23 no.3 Cape Town  2012


Reliability worth assessment of electricity consumers: A South African case study



Oliver Dzobo; Trevor Gaunt; Ronald Herman

Department of Electrical Engineering, University of Cape Town, South Africa




This paper discusses the results obtained from a customer survey conducted in Cape Town, South Africa, using in-person interviews with approximately 275 sample business customers. The survey included customer interruption cost estimation questions based on the direct costing method. The results obtained show that customer interruption cost for business customers varies with duration and time of occurrence of power interruptions. The variation was shown to be dependent on customer segment. Furthermore, it revealed that business customers can be grouped in terms of the investment they make to mitigate the impact of power interruptions on their activities, such as the use of backup power supplies.

Keywords: Energy Bill, customer interruption cost



Full text available only in PDF format.




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Received 19 May 2011
Revised 16 March 2012

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