Technical, economic feasibility and sensitivity analysis of solar photovoltaic/battery energy storage off‐grid integrated renewable energy system

Abstract This paper aims to reduce LCOE (levelized cost of energy), NPC (net present cost), unmet load, and greenhouse gas emissions by utilizing an optimized solar photovoltaic (SPV)/battery energy storage (BES) off‐grid integrated renewable energy system configured with a 21‐kW SPV, 5707.8 kW BES, and a 12‐kW converter system. The LCOE is reduced to 14.73% of that obtained in the diesel generator (DG)‐only system by deploying the proposed energy system and to 28.61% of that obtained in the DG/battery energy system. The NPC is reduced to 14.78% of that DG and 28.70% of that DG/battery energy system. By sensitivity analysis, it is found that LCOE decreases with the increasing inflation rate and also with the decreasing discount rate. A performance compression analysis between the designed energy system and similar recent studies has also been presented. The proposed energy system reduces diesel consumption by at least 8113 L/year and total greenhouse gas emissions by at least 21 545 kg/year in the study area. Also, 13.9% of excess energy is produced per year at only 0.02% of the unmet load percentage. These outcomes are extremely relevant for making investments in policies for supplying electricity to a residential load in a low‐load profile area.

Перевод пока недоступен