X3-IES-10K
The Solax X3-IES-10K is a 10 kW three-phase integrated energy storage system (ESS). It combines a hybrid inverter, BMS, and modular LiFePO4 batteries in a plug-and-play compact design, expandable up to 30 kWh. Features include IP66 protection, 200% PV oversizing, micro-grid management, and a 10-year warranty.
The Solax X3-IES-10K is a 10 kW three-phase integrated energy storage system (ESS), designed for residential installations and small commercial applications that require a complete photovoltaic solution in a single design. The X3-IES (Integrated Energy Storage) series integrates the three-phase hybrid inverter, the BMS system, and expandable battery modules into a single structure, eliminating the need to connect separate components.
What is the Solax X3-IES system and how is it different from the X3-Hybrid?
Unlike the X3-Hybrid G4 — which is just the inverter and requires separate external batteries — the X3-IES is an all-in-one solution: the inverter and battery modules are mounted together in a single vertical structure, with pre-configured internal DC wiring. The TP-HS50E 5.1 kWh battery modules (LiFePO4 technology, cobalt-free) are added in plug-and-play mode, up to a maximum of 6 modules for a total of 30.7 kWh. This solution reduces installation time, the number of wiring steps, and the overall system footprint.
Solax X3-IES-10K Technical Specifications
| Nominal AC Power | 10 kW |
| Type | Three-phase integrated ESS system |
| Number of MPPT | 2 |
| Strings per MPPT | 2 / 1 |
| Maximum DC Voltage | 1000 V |
| Max DC current per MPPT | 20 A |
| PV Input Oversizing | 200% |
| Storage Output Power | 200% (100% AC + 100% battery charge) |
| Max battery charge/discharge current | 50 A |
| Battery technology | LiFePO4 (cobalt-free) |
| Compatible battery module | TP-HS50E (5.1 kWh/module) |
| Maximum storage capacity | 30.7 kWh (6 modules) |
| SPD protection | Type II (DC and AC) |
| AFCI | Optional |
| Protection rating | IP66 |
| Battery operating temperature | down to -30°C (with integrated heating system) |
| Parallel inverters | Up to 10 units |
| Dimensions | 717 × 405 × 210 mm |
| Weight | 37 kg |
| Warranty | 10 years |
AI Smart Management and Micro-grid Function
The X3-IES system integrates energy management with AI forecasting: it analyzes consumption patterns, expected PV production, and energy tariffs to automatically optimize battery charge and discharge cycles. The micro-grid function allows the X3-IES to simulate the power grid and keep string inverters active even during off-grid periods, ensuring continuous production. It also supports smart management of priority loads such as heat pumps and EV charging stations.
LiFePO4 Batteries: Superior Safety and Durability
The TP-HS50E batteries used in the X3-IES system adopt cobalt-free LiFePO4 chemistry, which ensures greater thermal safety (no risk of thermal runaway), longer cycle life, and long-term chemical stability. The integrated heating system allows operation down to -30°C, making it suitable even for challenging climates.
Frequently Asked Questions
What is the difference between Solax X3-IES and X3-Hybrid G4?
The X3-Hybrid G4 is just the inverter: HV batteries are purchased separately and installed as distinct units connected via DC cables. The X3-IES, on the other hand, is an all-in-one system: inverter and battery modules are integrated into a single vertical structure with pre-configured internal wiring. The X3-IES is more compact, faster to install, and uses low-voltage LiFePO4 batteries specific to the IES series, which are not interchangeable with the HV batteries of the Hybrid G4.
Can I buy only the X3-IES inverter without the batteries?
Yes, the X3-IES-10K is sold as a separate inverter from the battery modules. The TP-HS50E batteries are purchased separately and can be added to the system in any number from 1 to 6 modules. However, to activate the storage function, at least one battery module must be connected.
Up to how many kWh can the X3-IES-10K system be expanded?
The X3-IES system supports up to 6 TP-HS50E battery modules of 5.1 kWh each, for a total capacity of 30.7 kWh. The modules are added in plug-and-play mode without the need for complex electrical reconfiguration, making the system easily scalable over time.
Does the X3-IES-10K support zero export function?
Yes, the X3-IES system natively integrates export control. Thanks to the combined management of PV production and battery charge/discharge, the system can keep grid export at zero or at the set limit value, intervening in real time on both available power sources.
Can the X3-IES-10K operate in island mode (off-grid)?
The X3-IES supports the micro-grid function: in the event of a public grid outage, the inverter simulates the power grid to keep any connected string inverters active. Household loads are powered by the combination of PV and battery. Up to 10 X3-IES units can operate in parallel for large-capacity storage systems.
