University of Tehran Press Iranian Journal of Biosystem Engineering 2008-4803 55 4 2025 01 20 Techno-economic optimization and environmental Life Cycle Assessment (LCA) of Hybrid System Microgrids for Minimizing Grid Power Outages in Residential Areas Techno-economic optimization and environmental Life Cycle Assessment (LCA) of Hybrid System Microgrids for Minimizing Grid Power Outages in Residential Areas 81 102 101474 10.22059/ijbse.2025.385950.665575 FA Marzie Salehi Department of Agricultural Machinery Engineering, Faculty of Agriculture, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran Majid Khanali Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering and Technology, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran Hassan Ghasemi-Mobtaker Department of Agricultural Machinery Engineering, Faculty of Agriculture, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran Mohammad Amin Vaziri Rad School of Energy Engineering and Sustainable Resources College of Interdisciplinary Science and Technology, University of Tehran, Tehran, Iran Journal Article 2024 12 04 This study investigates the techno-economic and environmental performance of a hybrid renewable microgrid consisting of grid/ wind turbine / solar panels /electrolyzer/inverter/battery for mitigating power outages in Najafabad Isfahan. In this paper the environmental assessment utilizes a life cycle assessment (LCA) approach with ReCiPe 2016 and simulation, optimization and modeling procedures are done by HOMER software. Five different scenarios were considered for power outages. In the first scenario, blackouts occur without a set timetable influenced by governmental decisions and immediate requirements, reflecting the real condition of blackouts in Najaf Abad city. Cost of energy for scenarios 1, 2, 3, 4, and 5 were calculated to be 0.0712, 0.0839, $0.0759, 0.0966, and 0.0777 $/kWh, respectively. Results show that if the government schedules power outages during sunny hours to compensate for capacity shortages in the national electricity grid, the utilization of large-scale renewables becomes more cost-effective. Scenario 3 is found to be the most sustainable energy system with a cost of energy of $0.0759/kWh by installing 34 wind turbines, 49844 kW of solar panels, 5000 kW of electrolyzers, 29268 kW of converters, 34500 kW hours of batteries and 116541.5 mWh per year of the national network. Furthermore, the comparative endpoint impacts of the five scenarios obtained by the ReCiPe 2016 method 36.38, 16, 17.20, 14.29 and 23.38 (mPt kWh -1) was reported, respectively and the fourth scenario with a 62 percent reduction in pollutants compared to the baseline scenario was recognized as the most sustainable scenario in terms of the environment. This study investigates the techno-economic and environmental performance of a hybrid renewable microgrid consisting of grid/ wind turbine / solar panels /electrolyzer/inverter/battery for mitigating power outages in Najafabad Isfahan. In this paper the environmental assessment utilizes a life cycle assessment (LCA) approach with ReCiPe 2016 and simulation, optimization and modeling procedures are done by HOMER software. Five different scenarios were considered for power outages. In the first scenario, blackouts occur without a set timetable influenced by governmental decisions and immediate requirements, reflecting the real condition of blackouts in Najaf Abad city. Cost of energy for scenarios 1, 2, 3, 4, and 5 were calculated to be 0.0712, 0.0839, $0.0759, 0.0966, and 0.0777 $/kWh, respectively. Results show that if the government schedules power outages during sunny hours to compensate for capacity shortages in the national electricity grid, the utilization of large-scale renewables becomes more cost-effective. Scenario 3 is found to be the most sustainable energy system with a cost of energy of $0.0759/kWh by installing 34 wind turbines, 49844 kW of solar panels, 5000 kW of electrolyzers, 29268 kW of converters, 34500 kW hours of batteries and 116541.5 mWh per year of the national network. Furthermore, the comparative endpoint impacts of the five scenarios obtained by the ReCiPe 2016 method 36.38, 16, 17.20, 14.29 and 23.38 (mPt kWh -1) was reported, respectively and the fourth scenario with a 62 percent reduction in pollutants compared to the baseline scenario was recognized as the most sustainable scenario in terms of the environment. https://ijbse.ut.ac.ir/article_101474_7f687021e18895cf8e39e8fa13d86196.pdf