Energy consumption, in particular electricity consumption, decreased significantly in 2020 due to the COVID-19 pandemic and related lockdown. In 2021, it gradually increased with resumption of university activities, although consumption remained lower than in 2019. After that, as shown by the graphs, energy consumption has progressively reduced in the last three years, partially thanks to the energy efficiency measures implemented by the University. This has also resulted in a reduction of CO2 emissions, as shown in the last table.