The standard covers various aspects of electrical safety, including:
Ensures that increasing amounts of solar/storage systems do not destabilize the low-voltage grid.
The official 2018-11 version can be purchased from the VDE Verlag .
Decentralized systems must actively protect the grid from over-frequency scenarios, which happen when power generation exceeds consumption.
If you are an installer or developer looking for specific compliance certificates, major inverter manufacturers (like SMA, Fronius, SolarEdge, or Huawei) host free, public PDF certificates of compliance ( Konformitätsnachweis ) on their websites showing that their specific devices fulfill VDE-AR-N 4105 requirements. vde-ar-n 4105 english pdf
The English version is not a separate standard but rather an of the original German. The official versions of the standard are available for purchase as a PDF download from two primary platforms:
Under certain frequency fluctuations, generators must be able to reduce their active power output to prevent frequency instability, ensuring power supply quality. 4. Behavioral Requirements
Using the 2011 version for a new installation in 2025 would result in automatic .
The ("Power Generation Systems Connected to the Low-Voltage Distribution Network") is a foundational technical standard in Germany that defines the requirements for connecting and operating decentralized generation systems—such as photovoltaic (PV) systems, battery storage, and CHP units—to the public low-voltage grid. The standard covers various aspects of electrical safety,
The VDE-AR-N 4105 is an official "Application Rule" published by
Often referred to as the "Technical Connection Rule Low-Voltage," this standard ensures that the growing number of decentralized generators (like residential solar) do not negatively impact the power grid. It is part of a larger framework developed by the VDE Forum Network Technology/Network Operation (VDE FNN) to integrate renewable energy into the grid safely.
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VDE might have an online library where you can find and purchase standards. Once you find the standard, you might be able to download a PDF version or purchase a hard copy. If you are an installer or developer looking
If you find an older from 2011, discard it. The November 2018 update introduced critical changes:
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If you're looking for a summary or overview in English without access to the standard, consider looking into:
For a more practical "good guide" on how the standard is applied, you can reference these technical summaries: FNN Overview of Power Generating Plants VDE official page
If your primary goal is to ensure compliance or gain understanding for practical applications (like installing solar panels), you might find similar standards from other countries or international bodies (e.g., IEC standards) that offer English content and are directly applicable or provide relevant guidelines.