This is the more technical/hands-on part of the school. Students will work in teams on their own minimal experiment targeting the environmental sustainability of software. Students will be assigned a measurement task and they will set up their own minimal infrastructure for measuring a set of software systems, will carry out the measurement, and will report their results at the end of the session. This part of the school will make use of well-known open-source projects dedicated to the execution of empirical studies targeting the measurement of the energy consumption of software systems (e.g., Android Runner or Experiment Runner, developed by the S2 group of the Vrije Universiteit Amsterdam). The learning objectives of this part include (but are not limited to): (i) exposing students to the various technical decisions that must be taken while executing experiments targeting software sustainability, (ii) exposing students to the perils and pitfalls in the measurement of the energy consumption of software, (iii) teaching students how to analyse and report to a wide audience the results of an experiment about the energy consumption of software.