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The energy transition presents us all with major challenges. We need not only electricity from renewable sources, but also storage solutions. At the Wannsee site, Yan Lu's team is researching novel lithium-sulphur batteries that can store much more energy than conventional batteries. The laboratory is unique in the Berlin-Brandenburg research landscape. In the cover story, the head of department tells us what motivates her about her work.

Rutger Schlatmann from the Photovoltaics Competence Centre PVcomB is also concerned with how the transformation of the energy system can succeed. Since autumn 2022, he has been chairman of the European advisory platform ETIP-PV and advises politicians on what framework conditions the solar industry needs in Europe. "The pressure to act is great," he admits in the interview.


We hope you enjoy reading this issue and, as always, look forward to your feedback!

Your lichtblick editorial team


  • cover story: Research for the batteries of the future
  • Video interview of Bernd Rech
  • “We are currently in a decisive phase for photovoltaics” Interview of Rutger Schlatmann
  • page 12: New Ombudspeople at HZB
  • page 13: BESSY III reaches first Milestone
  • page 14: Interview of HZB Social Media Manager Stefanie Kodalle
  • page 15: HZB in numbers: Who reads our news?
  • page 16: Florian Wichert, Head of Finance at HZB, about his new job
  • page 17: Alternatives to Windows, Office and Co.
  • page 20: Receipes from all over the world: Chilaquiles verdes by Lucero Yazmin Cobos Becerra


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