KETEP 세계에너지시장정보

Key findings .......................................................................................................................................... 1 

1. Introduction: Small systems with a big impact .......................................................................... 2 

2. Regulatory framework and market development ...................................................................... 4 
 2.1 History of plug-in PV in Germany and current regulatory framework .................................. 4 
 2.2 Market development of plug-in PV in Germany .................................................................... 8 
 2.3 Costs and payback time ....................................................................................................... 11 
 2.4 Merits of plug-in PV ............................................................................................................. 13 

3. Plug-in PV in multi-family housing ........................................................................................... 15 
 
4. Ensuring safety and system compatibility ................................................................................ 21 
 4.1 Protection against electric shock ......................................................................................... 22 
 4.2 Protection of household circuits (circuit overload) ............................................................. 24 
 4.3 Anti-islanding protection (grid protection) .......................................................................... 27 
 4.4 Structural and mechanical safety ........................................................................................ 28 

5. Concluding summary ............................................................................................................... 30 

Appendices ......................................................................................................................................... 31 
 Appendix A: The German household electrical system .................................................................. 32 
 Appendix B: Summary of the plug-in PV device standard DIN VDE V 0126-95 (2025-12) ............. 34 
 Appendix C: Online registration in the Market Master Data Register (MaStR) .............................. 38 

References .......................................................................................................................................... 39