RT info:eu-repo/semantics/article
T1 Real energy payback time and carbon footprint of a GCPVS
A1 Simón Martín, Miguel de
A1 Diez Mediavilla, Montserrat
A1 Alonso Tristán, Cristina
K1 Grid connected PV systems
K1 Real Energy Payback Time
K1 Life Cycle Assessment
K1 PV degradation
K1 Carbon Footprint
K1 clean energy
K1 Ingeniería eléctrica
K1 Electric engineering
AB Grid connected PV systems, or GCPVS, produce clean and renewable energy through thephotovoltaic e ect in the operation stage of the power plant. However, this is the penultimate stage ofthe facilities before its dismantlement. Before starting generating electricity with zero CO2 emissions,a negative energy balance exists mainly because of the embodied energy costs of the PV componentsmanufacturing, transport and late dismantlement.First, a review of existing studies about energy life cycle assessment (LCA) and Carbon Footprintof PV systems has been carried out in this paper. Then, a new method to evaluate the Real EnergyPayback Time (REPBT), which includes power looses due to PV panels degradation is proposed anddi erences with traditional Energy Payback Time are analysed. Finally, a typical PV grid connectedplant (100 kW nominal power) located in Northern Spain is studied in these sustainability terms. Thisfacility has been firstly completely modelled, including PV modules, inverters, structures and wiring.It has been also considerated the energy involved in the replacement of those components with shorterlifespan. The PV panels degradation has been analysed through the comparison of normalised flashtest reports on a significant sample of the installed modules before and 5 years after installation.Results show that real PV degradation a ect significantly to the Energy Payback Time of the installationincreasing slightly a 4:2% more the EPBT value for the case study. However, along a lifespanof 30 years, the GCPVS under analysis will return only 5:6 times the inverted energy on componentsmanufacturing, transport and installation, rather than the expected 9:1 times with the classical estimation.
PB AIMS Press
SN 2333-8334
YR 2017
FD 2017-01
LK http://hdl.handle.net/10259/4496
UL http://hdl.handle.net/10259/4496
LA eng
DS Repositorio Institucional de la Universidad de Burgos
RD 26-abr-2024