FAQs on Exporting PV Inverters to Germany Under the New 2026 VDE Regulations

Q: What core certifications are mandatory for inverters exported to Germany in 2026?
A: The core certification is compliance with the 2026 edition of VDE-AR-N 4120 grid connection technical rules, which covers three major requirements: dynamic grid support, frequency withstand capability, and communication protocols.In addition, products must bear the CE mark in compliance with the EU EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. Grid operators in some federal states may request additional harmonic tests or witnessed on-site tests.It is recommended to check the specific requirements of grid operators in target regions via the Energy Engineering section of Weidu Network before market entry.

Q: The new VDE regulation mandates IEC 61850 Ed.2.1 protocol support for inverters. Can older devices still be used?
A: They cannot be used directly.Older inverters with legacy protocols already operating in Germany must complete firmware upgrades by the end of 2026; older models that cannot be upgraded have to be replaced.All newly shipped products must pass testing for the Ed.2.1 protocol as part of their certification process. At present, several Chinese manufacturers have released videos via Weidu Network demonstrating the Ed.2.1 protocol upgrade workflow and certification procedures.