Project News

This page exists only in English.
Diese Seite existiert nur auf Englisch.
Cette page existe uniquement en anglais.


An article has been published in the international journal Energies

The peer-reviewed open-access journal Energies has published the article “Energy Analysis and Exergy Optimization of Photovoltaic-Thermal Collector” written by the project partners PhD candidate Sonja Kallio and Prof. Monica Siroux from INSA Strasbourg ICUBE University of Strasbourg.

The article was published in the Special Issue “Building Performance Simulation, Energy Efficiency and Renewable Energy Resources for Buildings”.

In the study, the operation of the solar-based micro-cogeneration system (PVT) under two different European climates was analyzed in terms of energy and exergy performance. The comparison between the PVT and photovoltaic (PV) panel performance was conducted as well. Finally, the PVT design was optimized using the multi-objective optimization technique.

The full PDF version of the publication can be download from the Energies website.


A photovoltaic-thermal (PVT) collector is a solar-based micro-cogeneration system which generates simultaneously heat and power for buildings. The novelty of this paper is to conduct energy and exergy analysis on PVT collector performance under two different European climate conditions. The performance of the PVT collector is compared to a photovoltaic (PV) panel. Finally, the PVT design is optimized in terms of thermal and electrical exergy efficiencies. The optimized PVT designs are compared to the PV panel performance as well. The main focus is to find out if the PVT is still competitive with the PV panel electrical output, after maximizing its thermal exergy efficiency. The PVT collector is modelled into Matlab/Simulink to evaluate its performance under varying weather conditions. The PV panel is modelled with the CARNOT toolbox library. The optimization is conducted using Matlab gamultiobj-function based on the non-dominated sorting genetic algorithm-II (NSGA-II). The results indicated 7.7% higher annual energy production in Strasbourg. However, the exergy analysis revealed a better quality of thermal energy in Tampere with 72.9% higher thermal exergy production. The electrical output of the PVT is higher than from the PV during the summer months. The thermal exergy- driven PVT design is still competitive compared to the PV panel electrical output.


Project Workshop at Hochshule Koblenz

The second project workshop was held successfully at Hochshule Koblenz partly online and on-site on 24th of September 2020.

The welcome note by Prof. Marc Nadler and three presentations were presented via Zoom. The presentations summarized the accomplished project work of Work Packages 3 and 4. Additionally, the outlook to ACA-MODES project was presented.


Energy and socioeconomic analysis on experimental data – methodology and results” by Christian Braasch

Modelling and simulation of hybrid systems – experiences from round robin simulations” by Adrian Bürger

Outlook to ACA-MODES – system simulation and design and control optimization” by Parantapa Sawant

All the presentations can be uploaded from the Downloads page.


Work package 3 report “Energy- and socio-economic analysis of existing field studies” is finalized by the work package leader, Hochschule Koblenz, with support of all partners and can be downloaded from the project website.


ECOS 2020, 33rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

The proceedings of ECOS 2020, 33rd conference, were published on Monday 29th of June. The conference paper of our project partners PhD student Sonja Kallio and professor Monica Siroux from INSA Strasbourg ICube Strasbourg University was accepted to the proceedings of ECOS 2020.

The conference paper Energy and exergy analysis of a photovoltaic-thermal system under two different climate conditions can be downloaded here:

The ECOS 2020 conference was meant to take place in Osaka, Japan on 29th June – 3rd of July 2020. However, due to the situation of COVID-19, the on-site conference was cancelled.


An article of the PhD student Sonja Kallio was published on the Research Blog of INSA Strasbourg.

You can read the article here.

Sonja Kallio having a presentation “Micro-cogeneration: State-of-Art and R&D activities” in the Project Workshop at the Offenburg University of Applied Science in January.


State of Art Report

Work package 2 output: State of Art Report has been published and can be uploaded from the project website.

31.01.2020 Offenburg, Germany

Project Workshop at the Offenburg University of Applied Sciences

About 40 participants came to the first user workshop within the ACA-MODES project at the Offenburg University of Applied Sciences on Friday, 31 January 2020, to learn more about the planning and operation of decentralised energy systems.

The scientific director of the ACA-MODES project, Prof. Dr. Jens Pfafferott, was pleased about the great interest of the participants.

During the workshop, the ACA-MODES project team gave the industrial partners, energy consultants, energy service providers, municipalities, energy cooperatives and scientists insights into the practical application of advanced tools for modelling and simulation of hybrid energy systems, for model predictive control and for data analysis. In addition, experts from renowned energy system research institutions and regional partners presented case studies and gave the participants insights into sector coupling and grid integration of building energy systems, which can be flexibly adapted to the size and market structure of the local energy system. During the lunch break, the participants were also able to get an impression of the new Regional Innovation Centre for Energy Technology (RIZ), which is currently under construction.

In the end, all participants agreed that the goal of the ACA-MODES project team – to build a bridge between science and users – had been achieved.

All the presentations of the workshop can be downloaded from here.