X3-IES-8K
The Solax X3-IES-8K is an integrated three-phase energy storage system with 8 kW output (all-in-one IES), featuring a built-in BMS and support for 2-6 LFP TP-HS50E battery modules (10.2–30.7 kWh). Equipped with 3 MPPT, 200% PV oversizing, IP66 protection, micro-grid capability, VPP-ready, dual charge/discharge, and a 10-year warranty. A plug-and-play solution ideal for three-phase users with high loads.
The Solax X3-IES-8K is an integrated energy storage system (IES) three-phase 8 kW, the most powerful version in the Solax Power X3-IES series for commercial and residential installations with three-phase supply. Like all IES systems, it integrates a hybrid inverter, BMS, and modular battery rack into a single compact cabinet, eliminating wiring between the inverter and storage system.
X3-IES-8K: integrated three-phase system for high loads
The 8 kW three-phase model is ideal for large homes, small businesses, or installations with heat pumps and EV charging stations on a three-phase grid. It supports 2 to 6 TP-HS50E battery modules of 5.1 kWh each, for a total capacity ranging from 10.2 kWh to 30.7 kWh. The cobalt-free LiFePO4 technology and integrated heating system ensure reliable operation even at −30 °C, making it suitable for installations in unconditioned environments.
X3-IES-8K Technical Specifications
| Nominal AC Power | 8.0 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 |
| AFCI | Optional |
| Operating Temperature | down to −30 °C |
| Dimensions | 717 × 405 × 210 mm |
| Weight | 37 kg |
| Warranty | 10 years |
Main Features
The X3-IES-8K integrates intelligent energy management with AI compatibility for production and consumption forecasting, micro-grid function for off-grid operation and real-time balancing, and support for dual charge/dual discharge to maximize storage yield. Global MPP scanning optimizes PV production even under variable irradiation conditions. VPP-ready support and ToU 7×24 enable active participation in flexible energy markets, enhancing the value of storage beyond simple self-consumption reduction.
Frequently Asked Questions
Does the Solax X3-IES-8K include batteries or are they purchased separately?
The X3-IES-8K is only the inverter part with integrated BMS structure. The TP-HS50E batteries (5.1 kWh each) are purchased separately. At least 2 modules are required for proper operation (minimum system voltage), up to a maximum of 6 modules for a total of 30.7 kWh.
What is the difference between X3-IES-8K and X3-IES-6K?
The difference is the nominal AC power: 8 kW vs 6 kW. The storage system (TP-HS50E batteries, capacity 10.2–30.7 kWh), number of MPPTs, and all smart features are identical. The 8K model is recommended for three-phase users with average peak consumption above 6 kW, or for PV systems from 10-16 kWp.
What is the difference between X3-IES-8K and X3-HYBRID-8.0-D?
The X3-HYBRID-8.0-D is a traditional hybrid inverter that requires a separate external battery cabinet. The X3-IES-8K, on the other hand, is an all-in-one system with inverter, BMS, and integrated battery compartment in a single cabinet, simplifying installation and reducing the required space. The IES system uses only TP-HS50E LFP batteries and offers a 10-year warranty.
Does the X3-IES-8K also work off-grid in case of blackout?
Yes, the system integrates the EPS function that powers loads in off-grid mode during grid outages. The micro-grid function also allows string inverters connected to the system to remain operational, ensuring continuous production even without the grid.
How many photovoltaic panels can be connected to the X3-IES-8K?
The X3-IES-8K has 3 independent MPPTs with a maximum current of 20 A each. It supports PV oversizing up to 200% of the nominal power, allowing up to 16 kWp in total. This allows you to maximize yield even in systems with mixed orientations or under suboptimal irradiation conditions.
