Electrical power measurements from multiple grid-connected photovoltaic systems on the rooftop of ETSIDI-UPM (Madrid, Spain)

This dataset contains electrical power measurements from a set of grid-connected photovoltaic systems installed on the rooftop of the ETSIDI (UPM), located at 40°24'19.4"N 3°42'10.1"W in Madrid, Spain. Measurements include DC power, AC power and power factor collected by measuring units of Carlo Gavazzi (VMUSAV30XSXX for DC power and EM112DINAV01XS1X for AC power). The data are provided as daily CSV files, which are grouped into monthly ZIP archives. Each record corresponds to a temporal resolution of 5 seconds. Time stamps are expressed in local time (time zone: Europe/Madrid). Power values are expressed in watts. Pdc stands for DC power, Pac for AC active power, and PF for power factor. Data gaps may occur due to maintenance operations, sensor recalibration, or temporary acquisition failures. The version 1.0 of the dataset covers the period April 2025 to March 2026. Each new version adds a monthly archive.