*2.1. Modelled System and Study Conditions*

The photovoltaic system analysed in this article is located in the campus of the University of Salento in Monteroni di Lecce, Puglia, located in south Italy. The installation, fully described in [24], is grid-connected and covers a net area of 4710 m<sup>2</sup> on the roofs of the parking lots of the aforementioned university. It is comprised of 3000 monocrystalline silicon modules connected in series, with a total nominal power of 960 kWp. The azimuth of all modules is −10◦, since they are oriented to the south east. However, two groups of modules can be differentiated according to their slope within the PV system: 3◦ (PV1); and 15◦ (PV2). Table 1 includes the main specifications of both groups.



The location of the present study matches the coordinates of the campus where the PV system is placed, i.e., 40◦19 32"16 N, 18◦5 52"44 E. This study area is characterised by a Mediterranean climate, with warm winters and dry summers. It is located 18 km from the nearest shore line, with an average elevation of 35 m above sea level. The starting and ending dates of this study are conditioned by the duration of the weather and PV power monitoring campaign done in [23] over said installation, as explained on the next subsection. Hence, the chosen temporal span of the study starts on 6th March 2012 at 00:00:00 UTC and ends on December 30th, 2013 at 23:59:59 UTC.
