Estudo de viabilidade técnica e financeira da hibridização de pequenas centrais hidrelétricas e usinas fotovoltaicas flutuantes

Abstract

This study aimed to analyze the technical and financial feasibility of implementing floating photovoltaic plants in lakes of hydroelectric plants, in order to take advantage of an area that is already unused due to flooding, not requiring the use of soil that may be suitable for other purposes such as agriculture, in addition to take advantage of the existing infrastructure such as a substation and transmission line. The research involved the search for suitable materials for a floating photovoltaic plant for the elaboration of a project of 342 kWp coupled to inverters that add up to 275 kW of power. The inverters were connected to a 69 kV/4.16 kV substation of a PCH with 12 MW of installed power. The plant proved to be technically viable because it uses the concept and suitable materials already on the market and used worldwide, however, financially it proved to be unfeasible, as the calculated financial results proved to be unattractive. The IRR resulted in 1.62% p.a., the NPV 782,025.50 negative and the payback 20 years and 2 months, indices calculated considering investment at retail prices and energy sales in the free energy market.