Author

Marian Willuhn

Covering online news on the German market and editing the German print issue since 2021, Marian has been writing about power electronics for pv magazine’s global website and monthly print magazine since 2018.

marian.willuhn@pv-magazine.com

Articles written by Marian Willuhn

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Supply chain

Varta CEO: ‘We wanted too much in too short a time’ Michael Ostermann, who last year took over as CEO of German battery giant Varta AG, tells pv magazine about guiding the company through its financial restructure, the causes of the crisis, and returning the brand to a position of strength.

Marian Willuhn

Jun 11, 2025

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Grid-scale

Green Flexibility to develop 80 MWh battery for experimental German grid project Grid companies LEW Verteilnetz and Bayernwerk have launched a pilot project to feed renewable energy into the electricity network in a more grid-friendly manner. One of the energy storage sites to be used in the project will come from Green Flexibility.

Marian Willuhn

Jun 10, 2025

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Software

France’s Socomec launches battery monitoring software The commercial energy storage system maker is introducing a new, artificial intelligence-backed monitoring platform to enable better battery maintenance.

Marian Willuhn

Jun 03, 2025

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Sodium-ion batteries

Biwatt launches commercial sodium-ion energy storage product The manufacturer has unveiled a 155 kWh sodium-ion battery energy storage system for commercial and industrial (C&I) customers.

Marian Willuhn

May 15, 2025

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Distributed

Dutch manufacturer Atmoce launches retrofit-ready home battery The company is targeting older home PV arrays with its M-ELV product, which does not require replacement of solar inverters.

Marian Willuhn

May 07, 2025

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Fire risk and safety

Balcony-battery manufacturer says cells were not responsible for German fire Zendure has issued a statement following an investigation into the cause of a fire in Neuenhaus, Lower Saxony. The manufacturer stated battery cells were not the cause.

Marian Willuhn

Apr 24, 2025

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Fire risk and safety

Balcony battery storage system catches fire in German home In Lower Saxony, a battery energy storage unit reportedly triggered a fire in a residential building. The lithium iron phosphate (LFP) system reportedly caught fire, for reasons that are unclear.

Marian Willuhn

Apr 01, 2025

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Revenue streams

Tesvolt launches new C&I battery storage system with 15 year performance guarantee With two cycles per day, the Forton can be loaded without voiding its 15-year performance guarantee. That opens the possibility of trading on the electricity market, enabling companies to recoup their investment more quickly.

Marian Willuhn

Mar 26, 2025

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Supply chain

German home battery sales collapse but larger systems on the rise German energy storage sales are shrinking, especially home systems, but commercial and industrial (C&I) and utility-scale numbers are rising and the Federal Association of Energy Storage Systems (BVES) wants faster permitting and better regulation.

Marian Willuhn

Mar 25, 2025