Articles written by Marian Willuhn

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Applications & Installations
Cyber threats for PV: What are credential compromise attacks and how do they work Credential compromise attacks allow adversaries to gain unauthorized access to PV systems by stealing or guessing valid login credentials, enabling them to manipulate operations, disrupt monitoring, or take control of critical assets. These attacks can lead to operational instability, reduced energy production, and safety risks, making strong authentication and access control essential for system resilience.
Emiliano Bellini, Marian Willuhn
Apr 15, 2026
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Applications & Installations
Atmoce debuts microinverter connecting two solar modules Atmoce’s new MI microinverter series connects two PV modules per unit while still providing module-level power optimization.
Marian Willuhn
Apr 14, 2026
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Applications & Installations
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 14, 2026
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Applications & Installations
Cyber threats for PV: What are man-in-the-middle attacks and how do they work Man-in-the-middle attacks are a serious threat to networked PV systems, allowing attackers to intercept, modify, or disrupt communications, potentially causing operational failures, physical damage, financial losses, and safety hazards. Effective defense requires a layered approach combining encryption, strong authentication, network segmentation, firewalls, IDS, and continuous monitoring to detect, prevent, and limit the impact of such attacks.
Emiliano Bellini, Marian Willuhn
Apr 13, 2026
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Applications & Installations
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 07, 2026
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Applications & Installations
BBDF: German network agency to release BESS grid fee framework soon Germany’s Federal Network Agency (Bundesnetzagentur) is set to present a framework for future network fees in May 2026, with industry discussions highlighting how these charges could interact with flexible connection agreements and affect battery energy storage system (BESS) returns.
Marian Willuhn
Apr 01, 2026
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Markets & Policy
How perovskite solar cells age under temperature stress German and Swedish researchers have found that rapid temperature cycling degrades perovskite cell performance through thermally induced stress and phase transitions, while also identifying organic spacer molecules that can enhance structural stability.
Marian Willuhn
Mar 30, 2026
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Netzleitwarte Bildschirm mit Netzletisystem in abbildung
Applications & Installations
Germany classifies cybersecurity threats for energy infrastructure Germany’s Federal Network Agency will use a new, structured framework developed by Fraunhofer IOSB-AST to classify cybersecurity incidents in the energy sector. The methodology enables comprehensive risk assessments, from initial reports to systemic and economic impacts, supporting consistent evaluation across the entire energy value chain.
Marian Willuhn
Mar 26, 2026
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Markets & Policy
German pilot shows 700 EVs can provide redispatch services TransnetBW says its pilot with Octopus Energy shows 700 electric vehicles can deliver grid flexibility within existing redispatch processes, with potential to scale to gigawatt-hour levels.
Marian Willuhn
Mar 26, 2026