The current version (VDE-AR-N 4105:2018-11) replaced the older 2011 version. It introduced stricter requirements for and revised the limits for small-scale generation units (like "plug-in" balcony solar).
VDE-AR-N 4105 is the primary technical application rule in Germany for connecting and operating decentralized power generation systems (like solar PV) to the low-voltage distribution grid. VDE Association Official English Documentation vde-ar-n 4105 english pdf
The standard is also essential for:
VDE-AR-N 4105 is the essential technical connection rule for low-voltage power generation systems in Germany. If you are a manufacturer, installer, or developer looking for a VDE-AR-N 4105 English PDF, this guide explains the standard's core requirements, why the English version is critical for international business, and how to ensure compliance. What is VDE-AR-N 4105? vde-ar-n 4105 english pdf