Solis S6-EH3P12K-H-EU(21A) Energy Storage Hybrid Inverters

  • Category: Products
  • Features
  • Solis S6 Solar Hybrid Inverter is an intelligent energy storage solution designed for residential PV systems. It integrates solar power generation, high-voltage battery storage, and backup power management to maximize energy utilization and reduce reliance on the grid. With advanced MPPT technology, seamless grid/off-grid switching, flexible system expansion, and smart monitoring via SolisCloud, the S6 delivers reliable, efficient, and sustainable energy for modern homes.

Product Description

S6-EH3P12K-H-EU(21A)

The Solis S6 Solar Hybrid Inverter is an advanced energy storage solution designed to maximize solar energy utilization for residential applications. By connecting solar panels with high-voltage batteries, this intelligent hybrid inverter enables efficient solar power generation, energy storage, and backup power management.

During the day, the S6 inverter converts solar energy to supply household loads while storing excess power in the battery for later use. At night or during periods of low solar generation, it automatically draws energy from the battery to keep your home powered, reducing reliance on grid electricity and helping lower energy costs.

With smart energy management, seamless switching between grid-connected and battery power, and compatibility with high-voltage battery systems, the Solis S6 Hybrid Inverter provides a reliable, efficient, and flexible solution for modern home energy storage systems. It helps homeowners achieve greater energy independence while optimizing the use of renewable solar energy.

Product Features

Advanced Solar Energy Harvesting

  • Supports up to 4 MPPTs, enabling flexible PV system design for multi-directional rooftop installations and partially shaded environments.
  • Allows up to 160% DC oversizing of PV input, maximizing solar energy utilization and improving system efficiency.
  • Supports up to 21A PV input current, compatible with the latest high-power solar modules.

Reliable Backup Power Performance

  • Provides up to 160% overload capability for 60 seconds in off-grid mode, ensuring stable startup of high-power appliances such as motors, water pumps, and air conditioners.
  • Achieves seamless grid-to-off-grid and off-grid-to-grid switching in less than 10ms, delivering uninterrupted power supply for critical loads.
  • Features customizable battery reserve settings to ensure sufficient backup energy when needed.

Flexible Energy Storage & System Expansion

  • Supports high-voltage battery systems for efficient residential energy storage applications.
  • Enables PV-only off-grid operation, reducing initial system investment while maintaining energy independence.
  • Supports up to 6 units in parallel, allowing flexible system expansion for higher power demands.

Intelligent Power Management

  • Supports three-phase unbalanced output, with each phase capable of delivering up to 50% of the inverter's rated power for improved load compatibility.
  • Supports existing PV grid-tied systems with export control and off-grid functionality, making it ideal for retrofit applications.
  • Provides grid-side generator integration for areas with unstable or insufficient power supply.

Smart Monitoring & Durable Design

  • Powered by SolisCloud, offering intelligent remote monitoring, AI-based energy optimization, and fast system troubleshooting.
  • Built with an IP66 protection rating, ensuring reliable operation in challenging outdoor environments and harsh weather conditions.

Technical Specifications

Input DC (PV side) Models 12K
Recommended max. PV array size 24 kW
Max.usable PV input power 19.2 kW
Max.input voltage 1000 V
Rated voltage 600 V
Start-up voltage 160 V
MPPT voltage range 200 - 850 V
Max.input current 4 × 21 A
Max.short circuit current 4 × 31.5 A
MPPT number / Max.input strings number 4/4
Battery Battery type Li-ion
Battery voltage range 120 - 700 V
Max.charge / discharge power 12 kW
Max.charge / discharge current 50 A
Communication CAN / RS485
Output AC (Grid side) Rated output power 12 kW
Max.apparent output power 12 kVA
Rated grid voltage 3/N/PE, 380 V / 400 V
Rated grid frequency 50 Hz / 60 Hz
Rated grid output current 18.2 A / 17.3 A
Max.output current 18.2 A / 17.3 A
Power factor >0.99 (0.8 leading - 0.8 lagging)
THDi <3%
Input AC (Grid side) Input voltage range 304 - 437 V / 320 - 460 V
Max.input current 27.3 A / 26.0 A
Rated grid frequency 50 Hz / 60 Hz
Frequency range 45 - 55 Hz / 55 - 65 Hz
Output AC (Backup) Rated output power 12 kW
Max.apparent output power 1.6 times rated power, 60s
Back-up switch time <10 ms
Rated output voltage 3/N/PE, 380 V / 400 V
Rated frequency 50 Hz / 60 Hz
Rated output current 18.2 A / 17.3 A
THDi(@linear load) <3%
Efficiency Max.efficiency 97.85%
EU efficiency 97.51%
BAT charged by PV max.efficiency 98.31%
BAT charged / discharged to AC max.efficiency 97.50%
Protection Anti-islanding protection Yes
Output over current protection Yes
Short circuit protection Yes
Surge protection DC Type III / AC Type III (optional)
Integrated DC switch Yes
DC reverse-polarity protection Yes
Battery reverse protection Yes
General Data Max.power per phase 50% rated power
Dimensions (W × H × D) 563 × 412 × 230 mm
Weight 34.5 kg
Topology Transformerless
Self-consumption (right) <25 W
Operating ambient temperature range -25 ~ +60℃
Relative humidity 0 - 100%
Ingress protection IP66
Noise emission (typical) <46.9 dB(A)
Cooling concept Natural cooling
Max.operation altitude 4000 m
Grid connection standard G98 or G99, VDE-AR-N 4105/VDE V 0124, EN 50549-1, VDE 0126/UTE C15/VFR2019, RD 1699/RD244/UNE 206006/UNE206007-1, CEI 0-21, C10/11, NRS 097-2-1, TOR, EIFS 2018.2, EC 61277, IEC 61727, IEC 60568, IEC 61683, EN 50530, MEA, PEA, EK18
Safety / EMC standard IEC/EN 62109-1/-2,IEC/EN 61000-6-1/-3
Features PV connection MC4 connector
Battery connection Quick connection plug
AC connection Quick connection plug
Display LED indicator + Bluetooth + APP
Communication CAN, RS485, Optional:Wi-Fi,Cellular, LAN