Journal of Smart Energy Systems and Sustainable Technologies

Articles

Vol. 1 (2025)

Techno-Economic Assessment of Small-Scale Grid-Connected Solar System in Coastal Cities of Lebanon

Submitted
August 9, 2025
Published
2025-10-20

Abstract

The goal of the present study is to examine the economic viability of 12kW grid-connected photovoltaic systems in five coastal cities in Lebanon (Beirut, Tripoli, Saida, Tyre, and Batroun). The results demonstrate that solar energy is a feasible alternative for the nation's sustainable electricity generation, especially in consideration of Lebanon's high levels of solar radiation and rising energy needs. Moreover, a variety of economic indicators, including Net Present Value (NPV), Internal Rate of Return (IRR), Payback Period, Levelized Cost of Electricity (LCOE), and Equity Payback, are computed using RETScreen software. The findings display the profitability for each PV system proposed, where all NPV values are positive and IRRs are above acceptable thresholds. Additionally, Tripoli has the lowest cost of power ($0.0974/kWh) and the lowest payback period (12.40 years), while Beirut has the highest cost and the longest equity payback period. According to the emission investigation, Tripoli avoided the most emissions and also recorded significant greenhouse gas (GHG) savings. According to these findings, solar photovoltaic systems could help Lebanon move toward renewable energy, reduce its negative environmental effects, and promote energy sustainability.

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