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Ahmed S.,Network and Electrical Machines Research Unit
Renewable and Sustainable Energy Reviews | Year: 2011

During the last decade, Tunisia evolved in an extremely difficult energy context characterized by the stabilization of the resources in hydrocarbons, the increase of the energy consumption and the increase of the price of oil ($147 the barrel in July, 2008), imposing on it to mobilize more to meet several challenges in terms of outside energetic dependence for the generation of electricity and the reduction of greenhouse gases. This policy allowed the reduction in the rate of growth of energy intensity of the country. This article presents a review about renewable and conventional energy resources, electricity consumption and production and the policy adopted by the country for energy conservation and the promotion of renewable energy. © 2010 Elsevier Ltd.

Ahmed S.,Network and Electrical Machines Research Unit | Othman H.,Network and Electrical Machines Research Unit | Anis S.,Network and Electrical Machines Research Unit
European Journal of Scientific Research | Year: 2010

The hybrid systems of renewable energy can contribute in a significant way to the durable development in several isolated areas far from the main utility grid. But, because of climatic change which is one of greatest challenges which must take up the international community, the supply of these isolated areas with their needs of electricity by renewable energy source can have interruptions. For that, the diesel generator used as auxiliary source and combined with the wind-PV-battery hybrid system can ensure a reliable supply without interruption. This paper discusses an optimization solution of a hybrid system of renewable energy by using the Homer software, and shows the importance of the emergency generator in order to ensure the reliability and the economy of the system. © 2010 EuroJournals Publishing, Inc.

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