Instal·lació Fotovoltaica d’Autoconsum per una Empresa del Sector HORECA

Abstract

The current energetic crisis presents the opportunity to find alternatives to the fossil fuel based conventional energy sources. The main goal of this project is to size a self-consumption photovoltaic system in a building of the HORECA sector, which has a consumption profile with a continuous demand during the 24 h of the day. Two different scenarios are considered: 1) On-grid systems and 2) Offgrid systems. In the first scenario two designs were simulated, a electricity surplus focused generation system to benefit from the economic compensation, and a system that maximizes self-consumption with the minimum generation of surplus electricity. These two designs present payback times under 6,5 years, independently from the compensation price. Moreover, values of 45,00 % and 36,51 % independence from the grid are obtained, respectively. In the second scenario, the viability of lithium and lead batteries with a back-up generator is studied. With the current electricity price the designs are not economically viable, but the gap to viability is smaller than expected. The main obstacle of the Off-grid systems is the renovation battery extra cost, because during the lifetime of the system, the battery will be changed more than twice. The photovoltaic solar energy has a great potential in the energetic transition and the fight against climate change