Solis S6-EH3P20K-H 20 kW Three-Phase High-Voltage Energy Storage Inverter

The Solis S6-EH3P20K-H is a 20 kW three-phase hybrid energy storage inverter designed for residential, small-scale, and C&I PV installations. It features four independent MPPT trackers, a maximum DC input power of 32 kW, and supports Li-ion battery systems with a voltage range of 120–800 V. The inverter includes dual backup ports for load control, generator compatibility, and peak shaving, as well as an integrated DC switch and optional AFCI 2.0 protection.

Efficiency reaches 97.7% (max) and 97.5% (EU), with a maximum charge/discharge power of 20 kW and a current of 50 A. The inverter operates at three-phase 230 V / 400 V, 50/60 Hz, and includes integrated energy metering and three current transformers (CTs). AC voltage detection prevents reverse-current damage to generators, and support for unbalanced/half-wave loads is provided on both the grid and backup ports.

The unit measures 563 × 546 × 250 mm, weighs 35.2 kg, and operates in ambient temperatures from −25 to +60 °C. It includes a 7.0" LCD display with Bluetooth and mobile app connectivity, plus CAN, RS485, Ethernet, and optional Wi-Fi/cellular/LAN communication. The inverter meets EN 50549-1/-10, VDE4105, and IEC/EN 62109-1/-2 standards.