Hybrid Renewable Energy System Design and Optimization for Developing Countries Using HOMER Pro: Case of Rwanda

Niringiyimana, Emile; Sun, Wanquan; Dushimimana, Giovanni; Niyigena, Jeanne Baptiste

doi:10.1109/icgea57077.2023.10125739

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…• Environmental: HOMER has the ability to estimate the emissions of six pollutants: carbon dioxide (CO 2 ), sulfur dioxide (SO 2 ), nitrogen oxides (NO x ), particulate matter (PM), unburned hydrocarbons (UHC), and carbon monoxide (CO). This functionality is essential in designing MGs in terms of reducing the emissions of toxic gases [37]; • Reliability:…”

Section: Homer Software Optimization Criteriamentioning

confidence: 99%

Optimizing Renewable Energy Integration through Innovative Hybrid Microgrid Design: A Case Study of Najran Secondary Industrial Institute in Saudi Arabia

Abusaq,

Zohdy

2024

Clean Technol.

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Amidst a growing global focus on sustainable energy, this study investigates the underutilization of renewable resources in the southern region of Saudi Arabia, with a specific emphasis on the Najran Secondary Industrial Institute (NSII). This research presents an in-depth analysis of installing a hybrid microgrid (MG) system on the roofs of NSII buildings, exploring six cases with varying tilt and azimuth angles. The study innovatively integrates architectural design and system administration, a novel approach for this location, and benchmarks the optimal angles against Hybrid Optimization of Multiple Energy Resources (HOMER) software defaults. The proposed system consists of solar photovoltaic (PV) panels, a battery storage system (BSS), a converter, a diesel generator (DG), and a grid. The selected model balances technological and economic viability with environmental considerations, ensuring a reliable power supply within the NSII’s roof area constraints. An extensive sensitivity analysis evaluates the system’s resilience across different scenarios. The current system, which is grid-only, has an estimated Net Present Cost (NPC) of about USD 7.02M and emits 1.81M kg/yr of CO2. The findings point to installing a microgrid with a 20.97° tilt and 50° azimuth angle as optimal, demonstrating 54.69% lower NPC and 92% lower CO2 emissions, along with zero kWh/year unmet electrical load when applying the resilience assessments. This outcome highlights Saudi Arabia’s southern region’s renewable energy potential, aligning with national mega-projects and energy initiatives.

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Section: Homer Software Optimization Criteriamentioning

confidence: 99%

Optimizing Renewable Energy Integration through Innovative Hybrid Microgrid Design: A Case Study of Najran Secondary Industrial Institute in Saudi Arabia

Abusaq,

Zohdy

2024

Clean Technol.

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Designing an On-grid Rooftop Photovoltaic System for Powering a University Campus: A Case Study of Begum Rokeya University

Islam,

Ahshan,

Haque

2023

2023 6th International Conference on Electrical Information and Communication Technology (EICT)

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Driving Urban Energy Sustainability: A Techno-Economic Perspective on Nanogrid Solutions

Turan,

Durusu,

Yumurtaci

2023

Energies

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In response to technological advances, environmental concerns, and the depletion of conventional energy sources, the world is increasingly focusing on renewable energy sources (RES) as a means of generating electricity in a more sustainable and environmentally friendly manner. Türkiye, with its advantageous geographical location, long hours of sunshine, and favourable climatic conditions, has a high potential for the use of solar energy. The objective of this study was to identify an energy system that minimizes investment costs while optimizing the levelized cost of energy (LCOE) and minimizing greenhouse-gas (GHG) and carbon dioxide emissions. To achieve this, the study used the concept of nanogrids (NGs) and carried out different evaluations for electric vehicle charging stations (EVCS) at different energy levels connected to the grid. The research focused on classic apartment buildings and multistory condominium-style buildings in Istanbul, Türkiye. Using HOMER Grid 1.11.1 version software, the study identified two optimal configurations: a PV–GRID system with 7 kW photovoltaic capacity and a PV–WT–GRID system with 90 kW PV capacity and 6 kW wind-turbine capacity. These configurations had a significantly lower LCOE compared to the cost of electricity from the conventional grid. When examining the sensitivity to economic factors, it was observed that the net present cost (NPC) and LCOE values fluctuated with electricity prices, inflation rates, and equipment costs. In particular, the two optimal configurations did not include a battery energy-storage system (BESS) due to the low energy demand in the PV–GRID system and the efficiency of the wind turbines in the PV–WT–GRID system. This highlights the need to tailor energy solutions to specific consumption patterns and resource types. In conclusion, the adoption of PV–GRID and PV–WT–GRID systems in Istanbul’s urban buildings demonstrates economic viability and environmental benefits, highlighting the importance of renewable energy sources, particularly solar PV, in mitigating energy-related environmental challenges, such as reducing CO2 emissions and reducing dependence on conventional grid electricity.

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Hybrid Renewable Energy System Design and Optimization for Developing Countries Using HOMER Pro: Case of Rwanda

Cited by 3 publications

References 9 publications

Optimizing Renewable Energy Integration through Innovative Hybrid Microgrid Design: A Case Study of Najran Secondary Industrial Institute in Saudi Arabia

Optimizing Renewable Energy Integration through Innovative Hybrid Microgrid Design: A Case Study of Najran Secondary Industrial Institute in Saudi Arabia

Designing an On-grid Rooftop Photovoltaic System for Powering a University Campus: A Case Study of Begum Rokeya University

Driving Urban Energy Sustainability: A Techno-Economic Perspective on Nanogrid Solutions

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