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From September 30 to October 4, 2025, a summer school, open and free, on energy modeling was held in Monastir. This training workshop was jointly organized by teams from the two National Engineering Schools, ENIM (Monastir) and ENIT (Tunis), within the framework of the Horizon Europe research projects, namely OpenMod4Africa and RE-INTEGRATE.  
Energy modelling is an essential tool for assessing energy consumption, production and flow within systems. The aim is to create a virtual representation of energy systems and to estimate energy production and consumption under different scenarios. Software is typically used to simulate the production and use of energy and its impact on the costs and environmental impact of energy choices. Modelling is also used to predict installation needs and optimise investments. By understanding and applying energy modeling techniques, stakeholders can significantly reduce the carbon footprint and optimize energy consumption and cost, helping decision-makers make informed choices. Energy modelling has become essential, especially since the advent of renewable energies which, by their intermittent and spatially distributed nature, have imposed a different architecture of electricity grids. The introduction of electric cars and green hydrogen in the near future makes energy modelling even more indispensable.    
It is with the aim of introducing and promoting energy modelling and its tools that this training was organised. It brought together participants from the professional and academic worlds, but especially doctoral students and engineering students. The expected result is to strengthen local and regional expertise in energy systems analysis.
The opening day brought together a large and diverse audience with both in-person and online participants. A live stream was broadcast with a participation of up to 120 people from around the world. This opening day was marked by interventions and technical presentations by experts in the field from Finland, Sweden, Germany, Spain and Tunisia. They discussed the European and African perspectives on energy modelling and presented the three key tools of the training, namely OSeMOSYS, GENeSYS-MOD and OpenTEPES.
The next three days were dedicated to training on simulation tools. The participants were divided into three groups of about ten people. Each group focuses on one tool. 
The last day was devoted to the presentation and discussion of the results of the case studies obtained by the participants. 
Other similar training courses are planned in the coming months.