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.
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Articles written by Marian Willuhn
Tesla launches three-phase Powerwall 3P
The system integrates a battery, hybrid inverter, and home energy management system into a single device. It supports the integration of additional appliances, including heat pumps via SG-Ready interfaces. A connection to Tesla’s proprietary wallbox is also planned.
Apr 24, 2026
Why system-level fire testing is becoming the new benchmark for grid-scale BESS safety
As utility-scale battery energy storage systems continue to be deployed across Australia’s National Electricity Market, fire risk assessment is rapidly shifting from a compliance exercise to a core project viability consideration. For developers, asset owners, insurance considerations and regulators, the key question is no longer whether systems meet component certification standards, but how complete BESS systems behave under severe real-world conditions.
BBDF: German network agency says framework for BESS grid fees coming soon
The Federal Network Agency plans to present a framework for the future network fee system at the end of May 2026. Battery Business Development Forum guests hear how grid fees might interact with flexible connection agreements debate, and the potential consequences for battery energy storage system (BESS) returns.
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Swedish company Flower wins German award for real-time AI-controlled BESS
The Swedish company the award in the "Clean Energy and Storage" category at the The Start Up Energy Transition Festival 2026 in Berlin, and operates an AI-powered platform for real-time optimization of battery energy storage systems (BESS), wind farms, and solar parks.
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Marstek launches 2 kWh plug-in battery storage system
Manufacturer Marstek has unveiled a plug-in storage system with a two-kilowatt-hour capacity. The device plugs into a standard household socket (Schuko in German) and is designed to store solar power from balcony systems or draw in cheap electricity from dynamic pricing tariffs.
Mar 17, 2026
Fraunhofer IEE calls for “grid-forming readiness” in distribution networks and BESS
A position paper from the Fraunhofer IEE proposes preparing large battery storage systems in the medium-voltage grid for grid-forming functions at an early stage. The "Grid-Forming Readiness" concept aims to close the regulatory gap between current planning and operation and future, as yet unknown, requirements and demands for grid-forming functions.
Varta unveils residential battery with AI-driven energy management
The Germany battery manufacturer is expanding its portfolio with a modularly scalable LFP storage solution featuring a new energy management system. The new product comes with the company’s proprietary “Varta.iq” software, which is designed to detect consumption anomalies, integrate dynamic electricity tariffs, and enable bidirectional charging.
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