X1-IES-8K
The Solax X1-IES-8K is an all-in-one single-phase hybrid inverter with 8 kW and integrated BMS, ideal for homes with high energy consumption (heat pumps, EVs). Equipped with 3 MPPT, 200% PV oversizing, compatible with LFP TP-HS50E batteries up to 20.4 kWh, IP66 protection, and 10-year warranty. Micro-grid management, VPP-ready, and ToU 7×24.
The Solax X1-IES-8K is an integrated single-phase energy storage system (IES) with 8 kW, the most powerful version in the Solax Power X1-IES series for residential applications. It integrates the hybrid inverter, BMS, and the structure for TP-HS50E battery modules into a single cabinet, ensuring a quick and scalable plug-and-play installation.
Why choose the X1-IES-8K over the 6 kW model
The 8 kW model is ideal for homes with high energy consumption (heat pumps, air conditioning systems, electric vehicles) or with a large photovoltaic field (up to 16 kWp thanks to 200% PV oversizing). The storage capacity is identical to the 6 kW version (expandable up to 20.4 kWh with 4 TP-HS50E modules), but the higher AC output power allows you to handle higher load peaks without drawing from the grid.
X1-IES-8K Technical Specifications
| Nominal AC Power | 8.0 kW |
| No. of MPPT | 3 independent (1/1/1) |
| 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 × 1-4 modules) |
| Total Storage Capacity | 5.1 – 20.4 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 |
| Battery Technology | Cobalt-free LiFePO4 |
| Operating Temperature | down to −30 °C |
| Dimensions | 717 × 350 × 210 mm |
| Weight | 28 kg |
| Warranty | 10 years |
Main Features
Like all models in the IES series, the X1-IES-8K stands out for its intelligent load management with AI support for production and consumption forecasting. The micro-grid function ensures operation even in off-grid mode, keeping third-party string inverters active. The Time of Use (ToU) 7×24 feature optimizes charging/discharging based on hourly tariffs, while the VPP-ready functionality opens the door to participation in flexible energy markets. The optional AFCI and rapid shutdown ensure maximum system safety.
Frequently Asked Questions
Is the Solax X1-IES-8K suitable for systems with a heat pump?
Yes, the 8 kW nominal AC power easily manages the peak absorption of a 5-7 kW thermal air-to-water heat pump, combining the contribution of photovoltaics and the battery to reduce or eliminate grid consumption. The intelligent load management function automatically optimizes usage priority.
What is the difference between X1-IES-8K and X1-IES-6K?
The main difference is the nominal AC power: 8 kW vs 6 kW. The storage system (TP-HS50E batteries, max capacity 20.4 kWh) and technical features are identical. The 8K model is recommended for homes with average peak consumption above 6-7 kW, or for PV systems from 10-16 kWp.
Does the X1-IES-8K include the batteries or are they purchased separately?
The X1-IES-8K is only the inverter part with integrated BMS structure. The TP-HS50E batteries (5.1 kWh each) are purchased separately. They are connected in a modular configuration from 1 to 4 modules for a total maximum of 20.4 kWh, expandable without system modifications.
Does the IES 8K system also work off-grid in case of blackout?
Yes, thanks to the integrated EPS function, the system powers household loads in off-grid mode during a grid outage. Thanks to the micro-grid function, it is also possible to keep third-party string inverters connected to the system operational.
How many photovoltaic panels can be connected to the X1-IES-8K?
The X1-IES-8K has 3 independent MPPTs with a maximum current of 20 A each. It supports PV oversizing up to 200%, so modules can be connected for a total peak power of up to 16 kWp. The low start-up voltage ensures extended operation during hours of low irradiation.
