--- title: "Growatt WIT 50K-H / WIT 50K-HU Hybrid Inverter: Specs & Datasheet | ComparePV" description: "Growatt WIT 50K-H / WIT 50K-HU 50 kW hybrid inverter. Specs: 1100 V max DC input, 133.0 kg, 5 yrs warranty." source: "https://comparepv.com/inverter/growatt-wit-50k-h-wit-50k-hu" updated: 2026-01-16 --- # Growatt WIT 50K-H / WIT 50K-HU ## Identity - **Manufacturer:** Growatt - **Model:** WIT 50K-H / WIT 50K-HU - **Series:** WIT 50-100kW - **Rated AC power:** 50 kW - **Type:** Hybrid - **Phases:** Three-phase - **Battery port:** yes ## How it compares Compared against 243 inverters from 30 to 100 kW. Ranks are within that class. | Measure | This inverter | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | European efficiency | - | 98.2% | | | | MPPT trackers | - | 4 | | | | Max DC input voltage | 1100 V | 1100 V | Typical | 3 | | Weight per kW | 2.7 | 1.1 | Weak - bottom 3% | 219 | | Warranty | 5 yrs | 5 yrs | Typical | 17 | ## Specification ### AC output - **Rated AC power:** 50 kW - **Max AC power:** 55.00 kW - **Max apparent power:** 55.00 kVA - **Phases:** Three-phase - **Nominal AC voltage:** 400 V - **Max AC current:** 83.3 A - **Grid frequency:** 50 Hz - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC input power:** 109.20 kW - **Max DC voltage:** 1100 V - **MPPT voltage range:** 180 to 800 V - **Start-up voltage:** 195 V - **Max input current per MPPT:** 32.0 A - **Max short-circuit current per MPPT:** 40.0 A ### Efficiency - **Max efficiency:** 98.0 % ### Battery - **Battery port:** Yes - **Battery voltage:** 600~1000V (for 3P3W) / 680~1000V (for 3P4W) - **Grid-forming:** Yes ### Physical - **Dimensions:** 1350 × 820 × 510 mm - **Weight:** 133.0 kg - **Enclosure:** IP65 - **Cooling:** forced-air - **Operating temperature:** -30 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 4000 m ### Connectivity and protection - **Interfaces:** Wi-Fi, Display - **Protocols:** RS485, CAN, USB, WiFi (optional), LAN (optional), 4G (optional) - **Protection:** AFCI, Surge protection ### Warranty and certificates - **Warranty:** 5 years - **Certifications:** IEC/EN 62109-1, IEC/EN 62109-2, IEC/EN 61000-6-1, IEC/EN 61000-6-2, IEC/EN 61000-6-3, IEC/EN 61000-6-4, EN 50549-1, VDE 4105, VDE 0124, NRS 097-2-1 ### Pros - **Up to 10 Independent MPPT Trackers** - The WIT 50K supports 7 independent MPPTs (8 for the 63K, 10 for the 75K/100K) at a DC/AC ratio of up to 2.0. Each tracker operates independently across a 180-800 V input range, meaningfully reducing mismatch losses on installations with multiple roof orientations or partial shading - a practical advantage for C&I systems. - **Integrated UPS Module with Black-Start Capability** - The built-in UPS module with black-start functionality - enabling startup without grid voltage - eliminates the need for external uninterruptible power supplies on critical circuits, simplifying system design and reducing the CAPEX of industrial installations. - **110% AC Overload Capacity and Full Unbalanced Three-Phase Output** - The series supports 110% continuous AC overloading and 100% unbalanced phase loading - a key feature for commercial installations with asymmetric current draw such as production lines and data centers, where stable operation under unequal phase distribution is required. - **IP66 Rating with Dual-Side Type II Surge Protection** - The IP66 ingress protection rating allows direct outdoor installation without an additional enclosure. Integrated Type II surge protection on both the DC and AC sides reduces damage risk and satisfies installation standard requirements without the need for external surge protective devices. - **In-Country Service in Poland, Warranty Under Polish Law** - Growatt Polska operates an authorized service center backed by a domestic (non-Chinese) warranty holder, with a repair turnaround of approximately 5 days and availability 7 days a week from 08:00 to 20:00. The declared field failure rate for the series is 0.54%, supported by service data collected by the Polish distributor MP Solar Group. ### Cons - **Not Listed as a Tier-1 Bankable Inverter Manufacturer (BNEF)** - Growatt does not appear on the BloombergNEF Tier-1 bankable inverter manufacturer list (confirmed: tier\_1\_bankable: false). For C&I projects above approximately 500 kWp financed through investment loans or leasing, certain banks and funds require Tier-1 status - this may complicate financing structures or necessitate additional collateral. - **Unit Weight of 160 kg for the 100K Model** - The WIT 100K weighs 160 kg, significantly more than comparable competing units such as the Sungrow SG110CX (~82 kg) or the SMA CORE2 100 (~112 kg). This requires specialized lifting equipment, increasing costs and complicating installation logistics on flat roofs. ## About this series Growatt WIT 50-100kW is a **three-phase grid-connected hybrid inverter** designed for commercial and industrial installations, where grid flexibility and energy storage integration are key. These devices reliably power demanding loads and support backup supply through **built-in UPS and black start functionality**, facilitating the protection of critical circuits without additional solutions. The WIT 50-100kW utilizes **multiple MPPTs**, effectively aiding in maximizing energy yields under varying panel orientations, unequal string configurations, or partial shading-each tracker operates independently, minimizing mismatch losses. High European efficiency translates to more energy delivered under typical operating conditions in Poland, not just in laboratory settings. Monitoring the installation is possible via various communication channels (e.g., WiFi, Ethernet) and a surveillance platform offering parameter and alarm views. It is also **compatible with high-voltage energy storage systems**, supporting popular battery technologies. The series meets required market certifications, with warranty terms depending on the region and installation documentation. ## Questions ### What power range does the Growatt WIT 50-100kW series offer, and what type of installations is it designed for? The WIT 50-100kW series includes models rated at 50 kW, 63 kW, 75 kW, and 100 kW. These are three-phase hybrid inverters designed for commercial and industrial applications - such as manufacturing facilities, warehouses, and shopping centers - where stable power supply combined with energy storage capability is required. The maximum DC-side PV input power reaches up to 156,000 W for the 100 kW model. ### Does the Growatt WIT 50-100kW operate as a UPS, and what does the black start function provide? Yes, the WIT 50-100kW series features a built-in UPS function that seamlessly transfers power to critical loads upon grid failure with no perceptible interruption to connected equipment. The black start function enables the inverter and energy storage system to be brought online from a completely de-energized state, without any grid availability. This is critical for businesses that must protect servers, production lines, or safety systems from power outages. ### What is the warranty period for the Growatt WIT 50-100kW inverter? The standard manufacturer's warranty for the WIT 50-100kW series is 5 years. An extended warranty option of up to 10 years is available, with terms varying by sales region and subject to proper installation documentation being completed. It is advisable to consult the distributor for specifics prior to purchase, as conditions may differ depending on the service agreement in place. ### Which energy storage systems are compatible with the Growatt WIT 50-100kW? The WIT 50-100kW series is designed to work with high-voltage (HV) lithium-ion battery energy storage systems. The battery operating voltage range is 750-1000 V. The inverter is compatible with Growatt's own HV battery offerings, making it straightforward to build a fully integrated single-brand system and simplifying ongoing service and maintenance. ### How is system monitoring handled with the Growatt WIT 50-100kW inverter? The inverter provides multiple communication channels: Wi-Fi, Ethernet (LAN), RS485, CAN, and an optional 4G module. Installation data can be monitored via the Growatt platform - through either a mobile application or a web dashboard - with real-time parameter readouts, alarm notifications, and production history logs. This is particularly important for commercial installations where both the asset owner and service technician require remote visibility into system operation. ### What is the efficiency of the Growatt WIT 50-100kW inverter, and does it translate into tangible savings? The maximum efficiency of the WIT 50-100kW series is 98.2%. Under conditions typical of Central European climates, the European efficiency rating is especially relevant, as it accounts for variable load throughout the day - the higher this figure, the more energy is delivered to the grid or storage rather than being dissipated as heat. At power levels of 50-100 kW, even a fraction of a percent in efficiency gain translates to hundreds of kilowatt-hours per year and measurable reductions in energy costs. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/WIT-50-100K-HU-c8058cf273f6.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [GoodWe GW50K-ET-10](https://comparepv.com/inverter/goodwe-gw50k-et-10) | 50 kW | 97.8% | | 65.0 kg | 68.0 kg lighter | | [Ginlong Solis S6-EH3P50K-H](https://comparepv.com/inverter/ginlong-solis-s6-eh3p50k-h) | 50 kW | 97.4% | | 73.0 kg | 60.0 kg lighter | | [Growatt MID 50K-HU](https://comparepv.com/inverter/growatt-mid-50k-hu) | 50 kW | 97.2% | | 50.0 kg | 83.0 kg lighter | | [Deye SUN-50K-SG01HP3-EU-BM4](https://comparepv.com/inverter/deye-sun-50k-sg01hp3-eu-bm4) | 50 kW | 97.0% | | 80.0 kg | 53.0 kg lighter | | [Growatt WIT 50K-A-US / WIT 50K-AU-US](https://comparepv.com/inverter/growatt-wit-50k-a-us-wit-50k-au-us) | 50 kW | | | 120.0 kg | 13.0 kg lighter | | [Growatt WIT 50K-AU-US](https://comparepv.com/inverter/growatt-wit-50k-au-us) | 50 kW | | | 140.0 kg | 7.0 kg heavier | | [Growatt WIT 50K-H-US / WIT 50K-HU-US](https://comparepv.com/inverter/growatt-wit-50k-h-us-wit-50k-hu-us) | 50 kW | | 10 | 60.0 kg | 73.0 kg lighter | | [Growatt WIT 50K-A](https://comparepv.com/inverter/growatt-wit-50k-a) | 50 kW | | | 120.0 kg | 13.0 kg lighter | --- Source: https://comparepv.com/inverter/growatt-wit-50k-h-wit-50k-hu