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  • Open Access

    ARTICLE

    Renewable Energy-Based Solutions for Decentralized Electrification: Demand Assessment and Multi-Tier Framework Approach

    Jacob Manyuon Deng1,*, Cyrus Wabuge Wekesa2, Khan Jean De Dieu Hakizimana1, Joseph Nzabahimana3

    Energy Engineering, Vol.122, No.5, pp. 1839-1862, 2025, DOI:10.32604/ee.2025.063398 - 25 April 2025

    Abstract Energy access remains a critical challenge in rural South Sudan, with communities heavily relying on expensive and unfriendly environmental energy sources such as diesel generators and biomass. This study addresses the predicament by evaluating the feasibility of renewable energy-based decentralized electrification in the selected village of Doleib Hill, Upper Nile, South Sudan. Using a demand assessment and the Multi-Tier Framework (MTF) approach, it categorizes households, public facilities, private sector, Non-Governmental Organizations (NGOs) and business energy needs and designs an optimized hybrid energy system incorporating solar Photovoltaic (PV), wind turbines, batteries, and a generator. The proposed… More > Graphic Abstract

    Renewable Energy-Based Solutions for Decentralized Electrification: Demand Assessment and Multi-Tier Framework Approach

  • Open Access

    ARTICLE

    Design and Economic Evaluation of Grid-Connected PV Water Pumping Systems for Various Head Locations

    Moien A. Omar*

    Energy Engineering, Vol.122, No.2, pp. 561-576, 2025, DOI:10.32604/ee.2025.059352 - 31 January 2025

    Abstract This research investigates the design and optimization of a photovoltaic (PV) water pumping system to address seasonal water demands across five locations with varying elevation heads. The system draws water from a deep well with a static water level of 30 m and a dynamic level of 50 m, serving agricultural and livestock needs. The objective of this study is to accurately size a PV system that balances energy generation and demand while minimizing grid dependency. Meanwhile, the study presents a comprehensive methodology to calculate flow rates, pumping power, daily energy consumption, and system capacity.… More >

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