20kwh solar energy storage system

Project cases: 4pcs 5kwh solar energy storage system
Inverter model: 2pcs 5kw Deye 
Location: Germany, Europe
Hi,we'd like to share our experience about our customer in Germany. Our customer is from Germany,he built a new house,he used a 5kwh solar energy storage system and 5kw Deye Inverter.he made his own battery room and installed the outdoor unit indoors by himself.