Abstract
Reliable, efficient, and affordable power supply system is a necessary tool for rapid socio-economic development of any country. Power supply in Nigeria is grossly inadequate and inefficient. This work presented a comparison analysis of Off-Grid Small hydro-Solar Photovoltaic-Diesel Generator hybrid system in three selected locations in South-west, Nigeria. The selected locations are Molete (Oyo state), Abeokuta (Ogun state) and Ede (Osun state). The hydro data for the three locations were collected from their respective River Basin Development Authorities, while the solar data were obtained from National Aeronautics and Space Administration’s global satellite database. The hybrid components consisting of Small hydropower (SHP), Solar Photovoltaic (PV), Battery (BB) and Diesel Generator (DG) were modelled and run using Hybrid Optimization Model for Electric Renewable software with the stream flow, the solar radiation, load and the system components costs as inputs. The work also carried out a comparative analysis based on economic parameters-return on investment and simple payback period different from the conventional use of net present cost, cost of energy(COE) and operating cost. The optimal hybrid combinations for these areas were compared with the usage of autonomous DG. The most optimal hybrid combination for Molete and Ede is PV-BB-SHP System with COEs of $0.347/kWh and $0.161/kWh respectively. The most optimal configuration for Abeokuta is PV-DG-BB-SHP with COE of $0.290/kWh. The results obtained (based on economic and technical considerations) showed that the hybrid system is viable for these areas. The outcome of the research will serve as guide for the government and prospective investors in formulating effective policies towards rapid development of renewable energy technologies in these areas.
Highlights
Reliable, efficient, and affordable power supply system is a necessary tool for rapid socio-economic development of any country [1], [2]
The section is broadly divided into three subsections: economic parameter analysis, comparison analysis of the optimal hybrid system with autonomous Diesel Generator (DG) and Greenhouse gas emission consideration
The economic parameter comparison is based on net present cost ((NPC),cost of energy (COE),return on investment (R.O.I) and simple payback period (SPP)
Summary
Efficient, and affordable power supply system is a necessary tool for rapid socio-economic development of any country [1], [2]. Almost 80% of the people living in the rural areas are estimated to be relying on fuel wood for their energy needs [4], [5]. Power supply in Nigeria is grossly inadequate and inefficient [6].The country depends heavily on power generation from fossil fuel and large hydro power generation. It operates 25 grid-connected electric power plants with a total installed capacity of 12,522 MW [7]. Power generations through these sources are very costly and absolutely unsustainable along with accompanying negative environmental impacts. This is insufficient for the growing population and the corresponding increase in energy demand
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