Techno-Economic Optimization of a Grid-Supported Solar PV-Battery System for Residential Electricity Supply in Saburi Estate, Abuja, Nigeria

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@article{1723194,
      author = {Brossa Gabriel Ekeyo, Musa T. Zarmai, Abdulazeez Haruna},
      title = {Techno-Economic Optimization of a Grid-Supported Solar PV-Battery System for Residential Electricity Supply in Saburi Estate, Abuja, Nigeria},
      journal = {Iconic Research And Engineering Journals},
      year = {2026},
      volume = {10},
      number = {3},
      pages = {2045-2049},
      issn = {2456-8880},
      url = {https://www.irejournals.com/formatedpaper/1723194.pdf},
      abstract = {This study evaluates the technical and economic performance of a grid-supported solar photovoltaic (PV)-battery system for residential electricity supply in Saburi Estate, Abuja, Nigeria, using HOMER Pro optimization. The system model comprises a PV array, LiFePO₄ battery storage, inverter, utility grid and residential AC load. The adopted average daily electricity demand is 19.441 kWh/day with an estimated peak demand of approximately 4.5 kW. HOMER Pro optimization, subject to zero capacity shortage, a minimum renewable fraction of 80%, a minimum battery state of charge of 20% and a 25-year project lifetime, produced an 8.18 kW PV array, 32 kWh battery storage and a 4 kW inverter. The optimized configuration generated 12,645 kWh/year from PV, representing 89.2% of gross electricity production, while the grid supplied 10.8%. The renewable fraction was 85.5%, with zero unmet load and zero capacity shortage. Annual excess electricity was 2,457 kWh/year, or approximately 17.3% of gross electricity production. The initial capital cost was ₦6,898,763.01, net present cost was ₦12,654,460, and cost of energy was ₦127.82/kWh against an adopted grid reference of approximately ₦209.8/kWh. The resulting payback period, return on investment and internal rate of return were four years, 18.8% and 23.9%, respectively. The findings indicate that integrated optimization can reduce battery and inverter capacities while increasing PV capacity relative to conventional sizing, producing a technically reliable and economically attractive grid-supported residential configuration under the stated assumptions.},
      keywords = {Solar PV; Battery storage; HOMER Pro; Techno-economic analysis; Residential electricity; Grid-connected system; Abuja; Nigeria.},
      month = {September},
  }