Techno-Economic Analysis of the Integration of Floating Photovoltaic (FPV) Solar Power Plant and Pumped Hydro Storage (PHS) Hydroelectric Power Plant at Matenggeng

Abstract

The increasing energy demand in Indonesia caused by population growth and industrialization, has prompted the government to accelerate the transition to renewable energy. The national energy mix target sets 23% contribution of renewable energy by 2025. Solar photovoltaic is considered as one of the potential renewable energy, although it has a fluctuating production nature. The integration of floating solar photovoltaic (FPV) and pumped hydro storage (PHS) is a solution which able to improve the stability of electricity supply. PHS stores excess energy from FPV by pumping water to an upper reservoir and uses it for electricity generation when needed, such as at night or during cloudy weather. This study aims to analyse the technical and economical aspect of the integration of FPV and hydro electric generator with PHS in Matenggeng, West Java. This study evaluates the potential for operational cost savings, increased electricity supply reliability, and reduced carbon emissions compared to fossil fuel power plants. The results show that the integration of FPV and hydro electric generator with PHS in Matenggeng able to reduce the LCOE to $0,08431/kWh, which is lower than the scenario without the integration of PLTS and conventional systems. In addition, this system contributes to reducing carbon emissions by up to 4% per year. Thus, this integration offers a sustainable solution that supports the clean energy transition in Indonesia.