Abstract

RIVERA-MARTINEZ, Mario Arturo et al. Sensitivity analysis of grid-connected photovoltaic systems: Case study in Guerrero, Mexico. Ing. invest. y tecnol. [online]. 2017, vol.18, n.3, pp.293-305. ISSN 2594-0732.

A sensitivity analysis of grid-connected Photovoltaic Systems (PVS) was realized in a specific case of study at UPEG (Polytechnic University of Guerrero State). It was determined the influence of the following variables on the very best PVS: capital costs and replacement of solar panels, electrical power price consumed to CFE; annual interest rate, average charge consumption and daily average solar radiation. The first three variables were includes because the energy reform in México could cause on them crucial modifications. For the current prices of photovoltaic components in México and a 6% of interest rate, a system with 50 kW power could provide around 50% of electrical demand of UPEG: a levelized cost of 0.27 USD/kWh. While 100 kW would supply 80% of demand with a cost of 0.20 USD/kWh. Nevertheless, if the price of electricity bought to CFE was diminished below 0.25 USD/kWh, the photovoltaic alternative would not be competitive. In that setting the PVS would only be competitive for interest rate around 3%. But if the PV capital cost decreses to 50%, they would be competitive even at 6% rate interest and the electricity costs from CFE not less that 0.15 USD$/kWh. Adidtionally, the periods of recovery showed relatively high values.

Keywords : Renewable technologies; photovoltaic systems; optimization of photovoltaic systems; energy self-supply; sensitivity of interconnected systems.

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