Objective: Since solar energy allows decentralized production of electricity, it can help solve the problem of electrifying isolated sites where a large number of individuals do not have access to energy. This work aims to size a multi-source system for optimal management of the energy produced. Method: We used an energy management strategy that is an algorithm, which determines at each moment the sharing of power between the different components of the system. Findings: The sizing tools allowed us to establish relationships between the powers of the components by simple rules, to define the solar power and the storage volume necessary to meet the demand of a load on a given site. Novelty: This study allowed us to set up an electrical architecture and a control strategy capable of limiting conversion losses and optimizing energy management within the system.

As part of the global energy transition towards more sustainable solutions, it is crucial to reduce dependence on fossil fuels by exploring renewable alternatives. This study focuses on the optimization of agricultural residues to develop biofuels for thermal power plants in Côte d’Ivoire. The raw materials studied come from rice, coffee and cocoa crops, which are abundant in rural areas of the country. The aim is to assess the feasibility of creating energy-efficient biofuels that are compatible with power plant boilers, while meeting environmental sustainability criteria. To achieve this, a linear programming model was used to determine the optimum proportions of the various agricultural residues to produce usable blends. The model considers higher heating value, the reduction of pollutant emissions and the preservation of combustion equipment. The energy performance of the fuels is then analyzed using a biomass power plant model. The results led to the development of two types of sustainable biofuel: the first, made up of 68% rice husk and 32% coffee husk, has a higher heating value of 13.79 MJ/kg; the second, made up of 60% rice husk and 40% cocoa pod husk, has a higher heating value of 13.49 MJ/kg. These biofuels stand out for their ability to reduce pollutant emissions and preserve combustion equipment. Rice straw is added to these two fuels to form the matrix of sustainable biofuels to produce electricity from a biomass power plant in Côte d’Ivoire. This study shows that it is possible to make effective use of agricultural residues to create sustainable biofuels, thereby contributing to a transition towards a more sustainable energy mix.

The aim of this study is to produce biogas with household peelings. The peels used are cassava (PM), yam (PI) and plantain (PB) peels. The bibliographic study allowed us to know that this waste has a high yield of biogas. However, the production of biogas with these peelings has acidification problems linked to their acid pH and a high C/N ratio. The use of a digestate from the anaerobic digestion of cow dung as inoculum (I) and a neutralizer such as human urine and cassava effluent allowed the pH to be adjusted around neutrality, which which made it possible to produce flammable biogas with its various peelings.