X3-IES-6K
The Solax X3-IES-6K is a 6 kW three-phase integrated energy storage system (all-in-one IES), with built-in BMS and support for 2-6 LFP TP-HS50E battery modules (10.2–30.7 kWh). Equipped with 3 MPPT with 200% PV oversizing, IP66 protection, micro-grid management, VPP-ready, and 10-year warranty. A plug-and-play solution ideal for three-phase users.
The Solax X3-IES-6K is a 6 kW three-phase integrated energy storage system (IES), designed for commercial and residential photovoltaic installations with a three-phase supply. Like the single-phase X1-IES version, it integrates the hybrid inverter, BMS, and battery module structure into a single cabinet, ensuring a quick and tidy plug-and-play installation.
Three-phase IES system: what it is and why choose it
The X3-IES series is the three-phase version of the Solax Power IES system, designed for buildings and small businesses with three-phase power supplies that want a compact and scalable storage system. The 6 kW model is expandable by connecting 2 to 6 TP-HS50E battery modules of 5.1 kWh each, for a total capacity between 10.2 kWh and 30.7 kWh. The cobalt-free LiFePO4 batteries and integrated heating ensure reliable operation even at −30 °C.
X3-IES-6K Technical Specifications
| Nominal AC Power | 6.0 kW (three-phase) |
| No. of MPPT | 3 independent |
| Max DC input current | 20 A per MPPT |
| PV oversizing | 200% |
| Max charge/discharge current | 50 A |
| Compatible batteries | LFP TP-HS50E (5.1 kWh × 2-6 modules) |
| Total storage capacity | 10.2 – 30.7 kWh |
| Protection rating | IP66 |
| EPS (backup) function | Yes |
| Energy management | VPP, micro-grid, ToU 7×24, Smart Scene |
| Monitoring | SolaxCloud (Wi-Fi, Ethernet) |
| SPD | Type II AC and DC side |
| Operating temperature | down to −30 °C |
| Dimensions | 717 × 405 × 210 mm |
| Weight | 37 kg |
| Warranty | 10 years |
Main Features
The X3-IES-6K system integrates intelligent load management with AI compatibility for production and energy consumption forecasting. The micro-grid function allows real-time grid balancing and off-grid operation, keeping third-party string inverters operational. ToU 7×24 support, smart scenes, and VPP-ready functionality make the system suitable for participation in flexible energy services. The dual charge/dual discharge capability and global MPP scanning maximize the energy yield of the photovoltaic system.
Frequently Asked Questions
Does the Solax X3-IES-6K include the batteries or are they purchased separately?
The X3-IES-6K is only the inverter part with integrated BMS structure. The TP-HS50E batteries (5.1 kWh each) are purchased separately and connected to the system in a modular configuration. At least 2 modules (minimum 10.2 kWh) are required for operation, up to a maximum of 6 modules for 30.7 kWh.
What is the difference between Solax X3-IES and X3-HYBRID?
The X3-HYBRID is a traditional hybrid inverter to which external batteries are connected in a separate cabinet. The X3-IES, on the other hand, is an all-in-one system: inverter, BMS, and battery compartment are integrated in the same cabinet, simplifying installation and reducing the required space. The IES system uses only TP-HS50E batteries and offers a 10-year warranty.
Does the X3-IES-6K work in the event of a three-phase grid blackout?
Yes, the system integrates the EPS (Emergency Power Supply) function, which powers loads in the event of a grid outage. The micro-grid function also allows connected string inverters to remain operational, ensuring continuity even in off-grid mode.
How many photovoltaic panels can be connected to the X3-IES-6K?
The X3-IES-6K is equipped with 3 independent MPPTs with a maximum current of 20 A each. It supports PV oversizing up to 200% of nominal power, allowing a photovoltaic field of up to 12 kWp in total to maximize yield during periods of low irradiation.
How do you expand the storage capacity of the X3-IES-6K system?
You add TP-HS50E battery modules (5.1 kWh each) in a stack configuration inside the same cabinet, from 2 (minimum) up to 6 modules for a total of 30.7 kWh. Expansion does not require any intervention on the inverter or existing wiring.
