RT info:eu-repo/semantics/article T1 Monitoring data study of the performance of renewable energy systems in a near zero energy building in Spain: A case study A1 Rey Hernández, Javier María A1 Velasco Gómez, Eloy A1 San José Alonso, Julio Francisco A1 Tejero González, Ana A1 González González, Sergio Lorenzo A1 Rey Martínez, Francisco Javier K1 CO2 impact K1 Energy analysis K1 Zero energy buildings K1 Energy consumption K1 Renewable energy K1 33 Ciencias Tecnológicas AB The building sector is responsible for a substantial part of the energy consumption and corresponding CO2 emissions. The European Union has consequently developed various directives, among which the updated Energy Performance of Buildings Directive 2018/844/EU stands out, aiming at minimizing the energy demand in buildings, improving the energy efficiency of their facilities and integrating renewable energies. The objective of the present study was to develop an analysis on the energy performance, related CO2 emissions and operating costs of the renewable energy technologies implemented within a multipurpose near Zero Energy Building (nZEB). The target building is an existing nZEB called LUCIA, located in Valladolid (Spain). Monitoring data provides the required information on the actual needs for electricity, cooling and heating. It is equipped with solar energy photovoltaic systems, a biomass boiler and a geothermal Earth to Air Heat Exchanger (EAHX) intended for meeting the ventilation thermal loads. All systems studied show favourable performances, but depend significantly on the particular characteristics of the building, the control algorithm and the climate of the location. Hence, design of these strategies for new nZEBs must consider all these factors. The combined use of the PhotoVoltaic PV System, the biomass and the EAHX reduces the CO2 emissions up to 123 to 170 tons/year in comparison with other fuels, entailing economic savings from the system operation of up to 43,000–50,000 €/year. PB MDPI SN 1996-1073 YR 2018 FD 2018 LK https://uvadoc.uva.es/handle/10324/52694 UL https://uvadoc.uva.es/handle/10324/52694 LA eng NO Energies, 2018, vol.11, n. 11, p. 2979 NO Producción Científica DS UVaDOC RD 18-nov-2024