Description
Growatt WIT 6kW-HU – hybrid inverter 6 kW
Growatt WIT 6kW-HU is a hybrid inverter rated at 6 kW, available at Growatt.tech. The battery-ready design lets you commission the inverter in grid-tied mode straight away and add low-voltage (LV) energy storage at any later point — without replacing the unit. The inverter comes with online monitoring and an IP66 enclosure for indoor and outdoor installation.
Growatt WIT 6kW-HU combines proven Growatt electronics with straightforward operation — once connected to the ShinePhone app, it gives you full control over the PV installation. This product page gathers the complete information on the WIT 6kW-HU model: how it works, how to size it, the compatible accessories and the full technical specification from the manufacturer’s datasheet. All parameters come from official Growatt documentation — we list them to make selection easier and to help you avoid costly mistakes at the design stage. If any questions remain after reading, our technical team will gladly help you select the inverter and the remaining components of the PV installation free of charge.
Expert commentary
“We recommend the Growatt WIT 6kW-HU model as a dependable hybrid platform with room to add energy storage. It is a battery-ready design — the low-voltage (LV) battery can be added at any point, without replacing the inverter. When sizing the system, we pay attention to the correct battery voltage class, the number and length of the strings and the correct configuration of the backup supply — we are happy to review your design before purchase.”
— Growatt.tech technical team
How the Growatt WIT 6kW-HU works
Growatt WIT 6kW-HU operates in hybrid mode: it stores surplus PV energy in a low-voltage (LV) battery and, when the grid fails, automatically switches key circuits to the emergency power supply (EPS). The generator input and the smart load function let you build a flexible system even where the grid is unstable.
Growatt WIT 6kW-HU has 1 independent MPPT tracker, which lets you connect strings of different orientations and lengths and maintain a high yield even with partial roof shading. You follow the installation in real time in the ShinePhone app and the ShineServer portal — with fault alarms and production history.
Who this inverter is for
- Three-phase installations with energy storage — homes, businesses, farms.
- Prosumers maximising self-consumption — energy storage increases self-consumption and shortens the payback period.
- Investors planning a staged build-out — grid-tied operation first, energy storage later.
- Anyone who needs an emergency power supply during grid outages.
Key features and functions
- 1 independent MPPT tracker — flexible string sizing and better yield under partial shading.
- Emergency power supply (backup) during grid outages
- AC generator input
- Smart load function — controllable load output
- Parallel operation of multiple units
- IP66 enclosure — indoor and outdoor installation.
- Online monitoring — the ShinePhone app and the ShineServer portal over Wi-Fi.
Compatible batteries and accessories
Growatt WIT 6kW-HU works with low-voltage (LV) batteries: AXE 5.0L-C1, HOPE 14.3L-A1, HOPE 16LM-A1. Backup power is provided by the built-in EPS (backup) module. Browse the full energy storage range in our shop — we will help you match storage capacity to your consumption and installation size.
Choosing the right energy storage
Storage capacity is matched to daily energy consumption and the goal of the investment: to increase self-consumption, storage covering the evening load is usually enough, while genuine backup power calls for more capacity and discharge power. Growatt WIT 6kW-HU lets you expand the storage in stages — start with one module and add more as your needs grow. Write to us at info@growatt.tech and we will size the storage for your installation.
Self-consumption and savings with the Growatt WIT 6kW-HU
The more PV energy you use on site, the lower your electricity bills. As a hybrid inverter, Growatt WIT 6kW-HU stores surplus energy from the panels in the battery and releases it in the evening instead of exporting it to the grid. Self-consumption rises, bills fall and the payback period of the installation shortens — and during a grid outage you still have an emergency power supply for key circuits.
WIT 6kW-HU parameters in practice
A wide MPPT operating voltage range (150-850 V) makes string sizing easier and lets the installation start producing even in weaker sunlight. The permitted PV array power of up to 9.6 kWp leaves headroom for DC-side oversizing, which increases annual energy yield. High maximum efficiency (97.6%) means lower conversion losses and lower electricity bills.
The inverter comes in an IP66 enclosure, operates across a temperature range of -30°C … +60°C (>45°C derating), uses smart air cooling cooling, weighs 43 kg (dimensions 475×698×240 mm), runs quietly (≈≤50 (4-15K) / ≤55 (17-25K) dB). It is suitable for indoor and outdoor installation.
Installation and operation
Growatt WIT 6kW-HU is three-phase (230/400 V) and has an IP66 enclosure, so it can be mounted indoors and outdoors. Installation should be carried out by a qualified installer in line with the manufacturer’s manual and the local grid connection requirements. Once commissioned, the inverter reports to the ShinePhone app and the ShineServer portal — you get a remote view of production, consumption and the battery state of charge. The unit is covered by a European service warranty (10 years per manufacturer).
Key technical data
| Growatt WIT 6kW-HU — specification | |
|---|---|
| Rated AC power | 6 kW |
| Inverter type | hybrid inverter |
| Phases | three-phase (230/400 V) |
| MPPT trackers | 1 |
| Battery class | low-voltage (LV) |
| Compatible batteries | AXE 5.0L-C1, HOPE 14.3L-A1, HOPE 16LM-A1 |
| Backup power | built-in EPS (backup) module |
| Max. PV array power | 9.6 kWp |
| Max. DC voltage | 1000 V |
| MPPT voltage range | 150-850 V |
| Start-up voltage | 180 V |
| Max. input current per MPPT | 40 (4-8K, 15K, 17-25K) / 20 (10-12K) A |
| Max. short-circuit current per MPPT | 50 (4-8K, 15K, 17-25K) / 25 (10-12K) A |
| Max. AC output current | 20.0A/10.0A |
| AC grid | 220V/380V, 230V/400V (4-15K); +240V/415V (17-25K); -15%~+10%; 50/60Hz, 45-55Hz/55-65Hz; 3P3W+PE/3P4W+PE (4-15K), 3P+PE/3P+N+PE (17-25K) |
| Max. efficiency | 97.6 % |
| European efficiency | 97.0 % |
| Output current THD | < 3% |
| Battery voltage range | 40-60V (rated 51.2V) |
| Max. battery current | 110-290 (4-15K, per model) / 420 (17-25K) A |
| Topology | Transformerless |
| Cooling | Smart air cooling |
| Operating temperature range | -30°C … +60°C (>45°C derating) |
| Noise level | ≤50 (4-15K) / ≤55 (17-25K) dB |
| Dimensions (W×H×D) | 475×698×240 mm |
| Weight | 43 kg |
| Ingress protection | IP66 |
| Monitoring | ShinePhone / ShineServer (Wi-Fi) |
| Manufacturer code | 99475 |
| Warranty | European service warranty (10 years per manufacturer) |
The full electrical parameters (MPPT voltages and currents, efficiency, dimensions, weight) are given in the manufacturer’s datasheet.
What sets the series apart — Growatt WIT 6kW-HU
The WIT-HU series comprises three-phase hybrid inverters with an LV battery, generator input, black start and parallel operation — a platform for larger residential, agricultural and commercial installations.
What to check when selecting the Growatt WIT 6kW-HU
When buying an inverter, the key is matching its power rating to the panel power and distributing the modules correctly across the MPPT trackers. Growatt WIT 6kW-HU is three-phase (230/400 V) and has 1 independent MPPT tracker, so it pays to plan the number and length of the strings around the available operating voltages already at the design stage. If you are considering energy storage, pay attention to the correct battery voltage class and the compatible models listed above — a battery from the wrong class rules out the expansion. It is also worth planning the mounting location in advance (ventilation, Wi-Fi access for monitoring). If in doubt, send us your design — we will verify the selection free of charge before purchase.
Monitoring and the app — Growatt WIT 6kW-HU
Growatt WIT 6kW-HU works with the free ShinePhone app and the ShineServer portal. Once the inverter is connected to a Wi-Fi network, you get a constant remote view of energy production, current consumption, the battery state of charge and the history for any period. The app sends notifications about faults and drops in production, so the installer or the owner can react to issues quickly. For installers managing multiple sites, Growatt provides service accounts with a view of the whole inverter fleet from a single panel — convenient for maintaining installations across many customers. Remote monitoring also simplifies warranty handling: operating data makes diagnosis easier without a site visit.
About the Growatt brand
Growatt is one of the world’s largest manufacturers of PV inverters and energy storage systems, present in the PV market for well over a decade and supplying equipment for residential, commercial and industrial installations in dozens of countries. The brand stands out for its wide inverter range — from small single-phase units, through hybrids with energy storage, to large commercial units — and for the extensive ShinePhone/ShineServer monitoring ecosystem.
Why buy at Growatt.tech
- European service warranty (10 years per manufacturer).
- B2B trade prices — Log in to view trade prices.
- Technical support and advice — we will help you match the inverter, the battery and the accessories. Questions: info@growatt.tech.
Warranty and B2B support
Growatt WIT 6kW-HU is covered by a European service warranty (10 years per manufacturer). Installers and businesses see B2B trade prices after logging in — if you need a quote for a larger quantity or a complete inverter-plus-storage set, write to info@growatt.tech and we will prepare an offer.
Frequently asked questions
Does the Growatt WIT 6kW-HU work with energy storage?
Yes — it is a hybrid inverter, ready for a low-voltage (LV) battery. Compatible models: AXE 5.0L-C1, HOPE 14.3L-A1, HOPE 16LM-A1.
How many phases and MPPT trackers does the WIT 6kW-HU have?
The inverter is three-phase (230/400 V) and has 1 independent MPPT tracker. The number of MPPT trackers determines how many independent panel groups you can connect — important for roofs with differently oriented surfaces.
Can the Growatt WIT 6kW-HU be installed outdoors?
Yes. The IP66 ingress protection rating allows indoor and outdoor installation. We recommend a shaded location, away from prolonged direct sunlight, with Wi-Fi coverage for monitoring.
What warranty does the WIT 6kW-HU carry?
The product is covered by a European service warranty (10 years per manufacturer).
Can I monitor the installation remotely?
Yes, via the ShinePhone app and the ShineServer portal over Wi-Fi — with a view of production, consumption and battery state.
Does the WIT 6kW-HU provide emergency power during a grid outage?
Yes — the built-in EPS (backup) module keeps selected circuits supplied when the grid fails.
What is the difference between a hybrid and an on-grid (grid-tied) inverter?
A grid-tied inverter feeds all PV energy to the grid and the installation but does not work with a battery. A hybrid inverter can additionally store surplus energy in a battery and keep the supply up during a grid outage.
Where can I find the full electrical specification of the WIT 6kW-HU?
In the manufacturer’s official datasheet — it lists the MPPT voltage and current ranges, efficiency, dimensions and weight. The key values are summarised in the specification table above.
B2B trade prices are visible after logging in. Log in to view trade prices.
Alan –
Growatt inverters make my job easier—lightweight, clear wiring diagrams, and fast startup. Clients report consistent energy production and low maintenance.