Joint workshop of the two EU projects COMPBAT and SONAR


On June 27, 2022, the two EU projects COMPBAT and SONAR will organize a joint workshop within the International Flow Battery Forum in Brussels / Belgium. The workshop will take place on Monday and thus one day before the actual program of the IFBF in the same premises. The topic of the workshop is modeling and simulation for novel active materials for redox flow batteries, as well as the EU-wide international cooperation in research and development. Speakers from both projects will be invited to present and discuss the status of different aspects of the developments. SONAR will present the state of the art of a high-throughput screening process on a working demonstrator and discuss it with the participants from industry and academia. Furthermore, a panel discussion on EU-wide collaboration will take place and a poster session in the evening will conclude the day.

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CENELEST participated again in this year’s SMART Energy Fair & Exhibition in Sydney

Smart Energy Sydney 2022

SMART Energy is one of the largest renewable energy events in Australia. As at the last event in 2020, CENELEST participated again with a booth at the fair. The content of the exhibition was the presentation of the possibilities of CENELEST as well as showing the results of some projects and cooperations.
Among other things, a technology demonstrator for the High-Throughout screening process, which is being developed in the international SONAR project, was represented. The software for the search for new active materials for aqueous organic redox flow batteries could be tested on a laptop. In addition, materials of cells, electrodes and a small demonstration redox flow battery were shown. The booth was supervised especially with the support of UNSW students from UNSW Challeng program NextGEN.

First visit of the German project partner after two years

After almost two years, it was possible to travel to Australia again in March 2022. During the same period, work at UNSW was limited. For this reason, mainly inventory work took place in preparation for future projects, as well as preparation for participation in Smart Energy 2022 in Sydney. If all goes well, the work in CENELEST will intensify significantly again in the course of the year. Furthermore, the exchange of staff will hopefully also increase significantly again.


With the onset of the war in the Ukraine, it has become clearer than ever that the European Union must work towards its energy independence and self-sufficiency. However, the EU must also avoid jeopardising its climate commitments by turning back towards fossil fuels. Instead, the EU must stand firm in its commitment to achieve carbon neutrality by 2050, which includes the transition to a renewable-based energy system. Flow batteries, as an important long-duration storage technology, can play a significant role in supporting this transition.
Since renewable energy is inherently variable, solutions are needed to ensure power availability and grid stability. Curtailment is not only highly inefficient, but is also costing a lot to the EU Member States. For example, in 2020, Germany curtailed 5900 GWh of wind energy, or about 5% of its total production, costing EUR 730 million in total.1 In the same year, Austria curtailed 80% of its wind production at 5590 GWh, costing EUR 510 million.2 It is possible to substantially increase the proportion of generation from renewable energy, provided that the energy system is set up to be more flexible and allow to add capacity, shift energy, and improve power quality through energy storage solutions. Energy storage technologies therefore have a fundamental role to play in the clean energy transition, ensuring that more renewable energy can be introduced and used efficiently within our power system.

Download the full statement here: