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A complete commercial energy storage solution pairing the 29.9–50kW three-phase hybrid inverter with the AXE-1HT-S1 high-voltage LFP battery stack — delivering 50–180kWh of scalable storage, 98.7% peak efficiency, and IP65 protection for demanding C&I applications.
Up to 50kW Output
The WIT-XHU series covers four power ratings — 29.9kW, 36kW, 40kW, and 50kW — in a single three-phase hybrid inverter platform. With a maximum AC output of 50kW and a peak efficiency of 98.7%, it is engineered for commercial rooftop solar, industrial self-consumption, and demand-charge management applications. The inverter supports both on-grid and off-grid operation, with seamless transfer switching and a 1.5× overload capability for 60 seconds to handle motor start-up and inrush loads without tripping.
50–180 kWh LFP
The AXE-1HT-S1 battery stack uses lithium iron phosphate (LFP) chemistry in a high-voltage configuration (200–800V DC bus), enabling direct coupling to the WIT-XHU inverter without a DC-DC converter. Each battery module delivers 15kWh of usable capacity, and up to 12 modules can be stacked in a single string to reach 180kWh. The integrated BMS provides cell-level balancing, state-of-charge estimation, thermal management, and CAN/RS485 communication with the inverter — ensuring safe, reliable operation across the full charge/discharge cycle life of >6,000 cycles at 80% DoD.
4 MPPT Trackers
Four independent MPPT trackers with a combined maximum PV input of 75kWp allow the system to handle complex rooftop layouts with multiple orientations and partial shading conditions. Each MPPT operates independently, so shading or soiling on one string does not degrade the output of the others. The wide MPPT voltage range of 200–800V DC accommodates a broad range of PV string configurations, and the maximum PV input voltage of 1,000V DC is compatible with standard commercial PV modules and string configurations.
Smart EMS
The built-in Energy Management System (EMS) supports multiple operating strategies: self-consumption maximisation, peak demand shaving, time-of-use (TOU) arbitrage, and backup power reservation. Up to 10 programmable time periods allow precise control of charge and discharge schedules aligned to local tariff structures. The system integrates with Growatt's ShineServer cloud platform for remote monitoring, firmware updates, and data analytics — with local Modbus TCP / RS485 interfaces for integration with building management systems (BMS) and SCADA platforms.
Datasheet version: 2025 | Growatt New Energy Technology Co., Ltd.
| Parameter | WIT 29.9K-XHU | WIT 36K-XHU | WIT 40K-XHU | WIT 50K-XHU |
|---|---|---|---|---|
| Battery Input Data (AXE-1HT-S1) | ||||
| Battery Type | Lithium Iron Phosphate (LFP) | |||
| Battery Voltage Range (V DC) | 200 – 800 | |||
| Usable Capacity per Module (kWh) | 15 | |||
| System Capacity Range (kWh) | 50 – 180 (3–12 modules) | |||
| Max. Charge / Discharge Current (A) | 100 | |||
| Cycle Life (@ 80% DoD) | > 6,000 cycles | |||
| BMS Communication | CAN / RS485 | |||
| Battery IP Rating | IP55 | |||
| PV String Input Data | ||||
| Max. PV Input Power (kWp) | 45 | 54 | 60 | 75 |
| Max. PV Input Voltage (V DC) | 1,000 | |||
| Start-up Voltage (V DC) | 200 | |||
| MPPT Voltage Range (V DC) | 200 – 800 | |||
| No. of MPPT Trackers / Strings per MPPT | 4 / 2 | |||
| Max. Input Current per MPPT (A) | 25 | |||
| AC Output Data | ||||
| Rated AC Output Power (kW) | 29.9 | 36 | 40 | 50 |
| Max. AC Apparent Power (kVA) | 33 | 40 | 44 | 55 |
| Rated AC Output Voltage (V) | 3L / N / PE, 380 / 400 / 415 | |||
| Grid Frequency (Hz) | 50 / 60 | |||
| Max. AC Output Current (A) | 48.3 | 57.9 | 64.4 | 80.5 |
| Peak Power (Off-Grid, 60s) | 1.5× rated power | |||
| Power Factor | 0.8 leading – 0.8 lagging (adjustable) | |||
| THDi (at rated power) | < 3% | |||
| Efficiency | ||||
| Max. Inverter Efficiency | 98.7% | |||
| Euro Efficiency | 98.2% | |||
| MPPT Efficiency | > 99.5% | |||
| Battery Round-Trip Efficiency | > 95% | |||
| General Data (Inverter) | ||||
| Dimensions W×H×D (mm) | 600 × 800 × 300 | |||
| Weight (kg) | 65 | |||
| IP Rating | IP65 | |||
| Cooling | Forced air (smart fan) | |||
| Operating Temperature (°C) | −25 to +60, derating > 45°C | |||
| Noise (dB) | < 55 | |||
| Max. Altitude (m) | 4,000 | |||
| Communication | RS485 / Modbus TCP / CAN / DRM | |||
| Cloud Monitoring | Growatt ShineServer (Wi-Fi / LAN / 4G optional) | |||
| Display | 4.3-inch colour LCD | |||
| Surge Protection | Type II (DC & AC) | |||
| Grid Standards | IEC 61727, IEC 62116, VDE-AR-N 4105, EN 50549, AS/NZS 4777 | |||
| Safety / EMC | IEC/EN 62109-1/2, IEC/EN 61000-6-1/2/3/4 | |||
| Warranty | 5 Years (extendable to 10 Years) | |||
| AXE-1HT-S1: 15 kWh/module, 3–12 modules, 50–180 kWh total | On-grid & off-grid | 10 programmable TOU periods | ||||
Industry-leading 98.7% inverter efficiency and >95% battery round-trip efficiency minimise energy losses and maximise ROI for C&I installations.
Stack 3 to 12 AXE-1HT-S1 LFP modules to reach 50–180kWh — scale capacity as energy needs grow without replacing the inverter.
Up to 75kWp PV input across 4 independent MPPTs handles complex rooftop layouts, multiple orientations, and partial shading without cross-string losses.
Integrated EMS with 10 programmable time periods enables demand-charge reduction, TOU arbitrage, and self-consumption maximisation.
Outdoor-rated enclosures for both inverter and battery allow direct installation without additional weatherproofing, reducing installation cost.
Growatt ShineServer cloud monitoring plus local Modbus TCP / RS485 for BMS and SCADA integration in industrial environments.
Our engineering team is available Mon – Fri 8:00am – 6:00pm CST. Emergency support 24/7.
