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Journal of Energy in Southern Africa

On-line version ISSN 2413-3051
Print version ISSN 1021-447X

J. energy South. Afr. vol.19 n.1 Cape Town  2008


Contribution analysis of electrical energy management in the industrial and commercial sector: A challenge to the Tanzania utility industry



A K Mohamed; M T E Kahn

Centre for Distributed Power Electronic Systems, Department of Electrical Engineering, Cape Peninsula University of Technology Bellville, South Africa




The investigation of electrical energy management (EEM) in the industrial and commercial sector determines how energy management affects electricity consumption and what makes its potential for being used to reduce peak demand of utility industries. The aim of this paper is to analyze the contribution of electrical energy management in the industrial and commercial sector and highlight its challenges to the Tanzanian utility industry. Energy efficiency technology analyzed in this paper includes energy efficiency lighting and power factor improvement. The analysis found that, if EEM is properly implemented, a significant amount of energy could be saved and could be converted to monetary benefits which might facilitate the development of other activities. The utility industry can benefit from saving considerable amounts of energy as well as the reduction of peak demand which can minimize the race of stumbling on new energy sources and construction of new power plants. The saved energy can be distributed to other consumers so as to improve accessibility or reliability of the electrical system and consequently minimize the impact of environmental pollution.

Keywords: electrical energy management, energy efficiency technology, power factor correction, cost benefit analysis



Full text available only in pdf format.



The authors gratefully acknowledge the Energy Management Fund of the CPUT and TANESCO for their support and contribution of the data.



Ariss J, 2003, 'Biomass Cogeneration in Tanzania: Case study - Tanganyika Wattle Company' Paper presented in East Africa Renewable Energy and Energy efficiency Partnership Regional Consultation Meeting, 9th -10th June 2003.         [ Links ]

Ashok S, 2006, 'Peak- load management in steel plants' Applied energy 83.         [ Links ]

Bradley R. L and Fulmer R. W, 2004 'Energy conversion factor' [online] available         [ Links ]

Bhatia S.L, 1983, Hand book of electrical energy, Khanna Publishers, Delhi.         [ Links ]

Bjork, C. O, 1986 Analysis of industrial load management', Proceedings of the American Power Conference, Vol. 48, pp. 523-527.         [ Links ]

Country Analysis Brief, 2007 'South Africa Energy Data, Statistics and analysis' [online] available from Links ]" target="_blank"> (18/07/2007).

Energy efficient lighting [Online] available from Links ]" target="_blank"> (8/6/07).

Energy Information and Administration (EIA), 2003 'Country energy balance' online available from: (18/07/2007).         [ Links ]

ESI Africa, 2006, ''Power sector in Tanzania', an article prepared by TANESCO, Issue No. 2,         [ Links ] [online] available from (10/02/2007).

International Energy Outlook/ Energy Information and Administration, 2006 'World net electricity consumption by Region, Reference case, 1990-2030 [online] available from Links ]" target="_blank"> (18/7/07).

Jordan H.E, 1982, Energy efficient electric motors and their application, Van Norstrand Reinhold Publisher, New York.         [ Links ]

Kinisley J. R, 1999,'Reducing high cost of electrical energy' [on line] available Links ]com/mag/electric-reducing-high-cost/Index.html" target="_blank"> (12/3/07).

Ministry of Energy and Minerals (MEM), 2003, National energy policy, the United Republic of Tanzania.         [ Links ]

Mohantry B, 2001 'Standby power loss in household electrical appliance and office equipment', Paper presented to Regional symposium on Energy efficiency standard and Labelling, 29-31 May 2001.         [ Links ]

Mwihava N.C, Mbise H. A, 2005'Infrastructure and utilities as stimulants of economic development'. Paper presented in annual engineer's day, Karimjee Hall, Dar es Salaam.         [ Links ]

Pasternak. A. D, 2000 'Global energy futures and human development: A framework for analysis' Report from U.S Department of Energy.         [ Links ]

Smith, C. B, 1978, Efficient electricity use, 2nd edition, Pergamum Press, New York.         [ Links ]

Tanzania National Electricity Company (TANESCO), 2007, 'Tariff' online available from (19/6/2007).         [ Links ]

Tellus Institute of Boston Massachusetts, Best practice guide on integrated resource planning, Paper prepared for energy and environment training program, office of energy, environmental and technology, Washington, DC. Available online from (14/4/07).         [ Links ]

United Republic of Tanzania, 'Country Profile' - Available online from (12/3/07).         [ Links ]

Wang X and Feng Z, 2003 'Energy consumption with sustainable development in Developing Country: a case in Jiangsu, China' Energy Policy, Vol. 31, pp 1679-1684.         [ Links ]

Yang M., 2006, 'Demand side management in Nepal - , Energy, Vol. 31 pp 2341-2362.         [ Links ]



Received 19 July 2007
Revised 4 February 2008

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