Articles written by Marian Willuhn

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Applications & Installations
Texxecure launches rating system for assessing PV project quality and technical risks Texxecure has launched a standardized rating system for photovoltaic projects, assessing technical risks from components and processes to final installation. The AAA-to-D scale aims to provide investors, banks, insurers, and developers with a transparent benchmark for PV asset quality.
Marian Willuhn, Emiliano Bellini
Jul 24, 2026
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Markets & Policy
Germany launches first capacity auction Germany’s Federal Network Agency has launched the first 4.5 GW auction under the new StromVKG, with developers invited to bid for dispatchable generation and long-duration storage capacity despite pending EU state aid approval.
Marian Willuhn
Jul 21, 2026
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Markets & Policy
German government considers cybersecurity measures against Chinese inverters Germany is considering regulatory restrictions on Chinese inverters in energy infrastructure following a parliamentary inquiry, citing cybersecurity and critical infrastructure risks. The government is reviewing options including EU-level measures and expanded investment screening as part of broader de-risking efforts.
Marian Willuhn
Jun 29, 2026
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Applications & Installations
German project tests DC-coupled commercial battery storage to cut costs A German pilot project is probing whether DC-coupled battery storage can unlock higher solar buildout behind constrained grid connections by reducing inverter hardware and simplifying system design.
Marian Willuhn
Jun 18, 2026
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Markets & Policy
Home batteries earn during negative electricity price spikes When wholesale electricity prices drop below zero during periods of excess renewable generation, as they did over the recent holiday weekend in Europe, flexibility becomes a revenue source.
Marian Willuhn
May 05, 2026
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Applications & Installations
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 23, 2026
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Applications & Installations
Cyber threats for PV: What are cloud platform and software-as-a-service exploitation attacks and how do they work Cloud and SaaS platforms are now central to PV plant operations, but their centralization creates a high-impact cybersecurity risk where a single compromise can expose or disrupt entire fleets of installations. Attackers exploit weaknesses like stolen credentials, insecure APIs, multi-tenant flaws, and platform vulnerabilities, making strong identity controls, secure APIs, and continuous monitoring essential defenses.
Emiliano Bellini, Marian Willuhn
Apr 20, 2026
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Applications & Installations
Cyber threats for PV: What are supply chain attacks and how do they work Supply chain attacks compromise PV systems by targeting trusted vendors, software, or hardware components, allowing attackers to infiltrate systems indirectly through legitimate channels. These attacks can disrupt operations, introduce hidden vulnerabilities, and impact multiple assets at once, making vendor security and system validation critical for resilience.
Emiliano Bellini, Marian Willuhn
Apr 17, 2026
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Applications & Installations
Cyber threats for PV: What are distributed denial-of-service attacks and how do they work Denial-of-service attacks overwhelm networked systems with massive traffic from compromised devices, disrupting communication and making critical services like PV system monitoring and control unavailable. They can cause operational instability, reduced energy production, and safety risks, requiring layered defenses such as filtering, redundancy, and automated mitigation to maintain system resilience.
Emiliano Bellini, Marian Willuhn
Apr 16, 2026