Economic Analysis of Combination of Pumped Hydroelectric Storage (PHS) and Floating Photovoltaic + PV Roof Top + PV in empty land of Power Plant Area

Abstract

∗Java Bali electricity system is the largest electricity system in Indonesia. This becomes the main consideration for strengthening the Java-Bali electricity system so that if a blackout occurs it does not take a long time for system recovery. To meet the large and reliable demand for electricity, Cisokan pumped storage hydropower plant is currently being developed with a capacity of 1040 MW (4 X 260 MW). In this paper, we combine the Pumped Hydroelectric Storage (PHS) with floating photovoltaic + PV Roof Top + PV in empty land with a total capacity of 652 MW. The economic analysis of a combination of Pumped Hydroelectric Storage (PHS) and floating photovoltaic system is calculated using LCOE formula that uses some components, i.e. project and O&M cost of the pumped-storage hydropower plant, PV module, inverter, and installation cost, O&M cost of a PV system, and electricity tariff from PLN grid for industry category (> 200 kVA). The boundary of this study is to calculate Levelized Cost of Energy (LCOE) of Pumped Hydroelectric Storage (PHS) without floating photovoltaic with the result 17.97 Cent $/kWh, LCOE of floating photovoltaic+ PV Roof Top + PV in empty land with the result 4.30 Cent $/kWh, and LCOE of Pumped Hydroelectric Storage (PHS) with floating photovoltaic + PV Roof Top + PV in empty land with the result 16.49 Cent $/kWh. The purpose of this study is to gain the cost efficiency of a combination of Pumped Hydroelectric Storage (PHS) and floating photovoltaic + PV Roof Top + PV in empty land in the Upper Cisokan Pumped Hydroelectric Storage Project with the result of 21.80%.