Articles written by Marian Willuhn

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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.
Marian Willuhn
Apr 27, 2026
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Cyber threats for PV: What are ransomware attacks and how do they work Ransomware attacks encrypt or lock critical PV system data and control platforms, preventing operators from accessing or managing their assets until a ransom is paid. These attacks can disrupt operations, reduce energy production, and create safety risks, making robust backups, segmentation, and incident response essential for resilience.
Emiliano Bellini, Marian Willuhn
Apr 15, 2026
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AI-enabled hacks expose remote shutdown risk in microinverters IT security firm Jakkaru has identified a vulnerability in microinverters from AP Systems that could enable a “kill switch” scenario, potentially shutting down tens of thousands of inverters simultaneously and disrupting grid operations.
Marian Willuhn
Apr 09, 2026
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SolarEdge launches Nexis hybrid inverter and high-voltage battery for residential PV The Nexis solution combines a flexibly configurable hybrid inverter with a modular high-voltage battery offering up to 14 kW charging capacity per stack. The inverter delivers 8–20 kW AC power, supports up to 200% DC oversizing, and features IP65-rated design with integrated backup power.
Marian Willuhn
Mar 24, 2026
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Marstek launches 2 kWh plug-in battery storage system Marstek has unveiled a plug-in storage system with a two-kilowatt-hour capacity. The device plugs into a standard household socket and is designed to store solar power from balcony systems or draw in cheap electricity from dynamic pricing tariffs.
Marian Willuhn
Mar 19, 2026
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EU to ban Chinese inverters? – Commission proposal in Cybersecurity mulls ‘high-risk vendors-list’ The European Commission is revising its Cybersecurity Act. While presenting the proposals in European Parliament, the commission’s Executive Vice-President for Tech Sovereignty, Security and Democracy, Henna Virkkunen, said dependency on a very limited number of solar inverter suppliers could “pose a significant security risk.”
Marian Willuhn, Patrick Jowett
Jan 21, 2026
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Biwatt launches commercial sodium-ion energy storage product Biwatt has unveiled a 155 kWh sodium-ion battery energy storage system (BESS) for commercial and industrial (C&I) customers.
Marian Willuhn
May 20, 2025
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German wholesalers hit by six-figure losses from new solar module scam Suspected fraudsters are using false identities to claim they are interested in solar modules. The wholesalers typically respond by delivering the requested products, but the scammers never actually pay for their orders. These are not isolated cases, as a clear pattern has emerged.
Marian Willuhn
Feb 07, 2025
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Switzerland to host world’s largest redox flow storage project Flexbase plans to build a 500 MW redox flow storage project in Laufenburg in early 2025.
Marian Willuhn
Sep 24, 2024