Author
Jochen Siemer
Jochen joined pv magazine in 2023. He began working as a freelance journalist in 1988. A few years later, he found himself focusing on renewable energies. Since 2021, he has dealt exclusively with photovoltaics in all its aspects – from scientific studies on the development of the global market to the product presentation of a new roof hook.
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Articles written by Jochen Siemer
From cell production to energy trading: Volkswagen launches its first large-scale battery storage project
The “Elli Power Center” in Salzgitter may not be large, but it is significant: the Volkswagen Group intends to become an “integrated energy player,” combining activities from battery cell production to the marketing of energy storage within a single corporate structure.
Mar 10, 2026
High temperature sodium-zinc batteries: Researchers use X-rays to find reasons for capacity loss
Sodium-zinc molten-salt batteries operate at around 600 degrees Celsius and are considered highly promising for stationary energy storage, thanks to their abundantly available and low-cost raw materials. But persistent capacity losses have held the technology back. Helmholtz researchers have now used operando X-ray imaging to see, for the first time, exactly why.
Survey: Battery storage operators struggle with performance, data access and supplier accountability
Battery storage analytics specialist Twaice has once again surveyed operators of large-scale energy storage facilities, concluding that operational efficiency is failing to keep pace with the sector’s rapid growth.
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Terralayr launches ‘ETF’ model for battery storage: Parallel trading by multiple optimizers on single assets
The "Enhanced Trading of Flexibility" platform allows Entrix, Suena, and The Mobility House to trade simultaneously on a single battery asset. The approach aims to reduce the "binary risk" of relying on a single trading strategy while extending battery life through schedule netting.
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German battery first to integrate monitoring, analytics and trading, moving away from fragmented digital tools
Obton Dynamic, Amperecloud, Volytica Diagnostics and Enspired are trialling a coordinated approach to storage operation on a 32 MWh battery storage project in Tangermünde, south-east Germany. Their goal is to pilot a best practice in asset management and competitiveness in Europe’s fast-moving storage markets.
EFT Energy Solutions launches pre-configured C&I battery featuring BYD modules
According to the German company, the Industrial Flex system, which is based on BYD’s MC Cube battery modules, brings the standardization and design principles of residential battery storage systems to commercial-scale applications.
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