Description
Growatt WIT 40K-XHU – hybrid inverter 40 kW
Growatt WIT 40K-XHU is a hybrid inverter rated at 40 kW, available at Growatt.tech. The battery-ready design lets you commission the inverter in grid-tied mode straight away and add high-voltage (HV) 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 40K-XHU 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 40K-XHU 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 40K-XHU model as a dependable hybrid platform with room to add energy storage. It is a battery-ready design — the high-voltage (HV) 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 40K-XHU works
Growatt WIT 40K-XHU is an industrial-class three-phase commercial hybrid inverter with a high-voltage (HV) battery. It stores PV energy, releases it at times of peak demand and keeps the supply up when the grid fails (UPS, black start). It supports a generator input, smart load and parallel operation — including island mode.
Growatt WIT 40K-XHU has 4 independent MPPT trackers, 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
- 4 independent MPPT trackers — flexible string sizing and better yield under partial shading.
- UPS and black start (backup supply and start-up without the grid)
- AC generator input
- Smart load function
- Parallel operation, also in off-grid mode
- Up to 3 battery inputs
- IP66 enclosure — indoor and outdoor installation.
- Online monitoring — the ShinePhone app and the ShineServer portal over Wi-Fi.
Compatible batteries and accessories
Growatt WIT 40K-XHU works with high-voltage (HV) batteries: AXE 5.0H-E1 (HV rack). Backup power is provided by the built-in UPS / black start. 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 40K-XHU 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 40K-XHU
The more PV energy you use on site, the lower your electricity bills. As a hybrid inverter, Growatt WIT 40K-XHU 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 40K-XHU parameters in practice
The Growatt WIT 40K-XHU model is engineered for the real-world conditions of European PV installations: high conversion efficiency limits energy losses, and a wide MPPT operating range makes string design easier across different roof layouts. The IP66 enclosure allows the unit to be mounted indoors and outdoors, while ShinePhone monitoring gives a live view of production and quick detection of any faults. The full electrical values are given in the manufacturer’s datasheet.
Installation and operation
Growatt WIT 40K-XHU 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 (5 years per manufacturer).
Key technical data
| Growatt WIT 40K-XHU — specification | |
|---|---|
| Rated AC power | 40 kW |
| Inverter type | hybrid inverter |
| Phases | three-phase (230/400 V) |
| MPPT trackers | 4 |
| Battery class | high-voltage (HV) |
| Compatible batteries | AXE 5.0H-E1 (HV rack) |
| Backup power | built-in UPS / black start |
| Ingress protection | IP66 |
| Monitoring | ShinePhone / ShineServer (Wi-Fi) |
| Manufacturer code | 99443 |
| Warranty | European service warranty (5 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 40K-XHU
The WIT-XHU series comprises commercial three-phase HV hybrids with UPS, black start and off-grid parallel operation — a platform for large commercial and industrial installations with energy storage.
What to check when selecting the Growatt WIT 40K-XHU
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 40K-XHU is three-phase (230/400 V) and has 4 independent MPPT trackers, 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 40K-XHU
Growatt WIT 40K-XHU 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 (5 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 40K-XHU is covered by a European service warranty (5 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 40K-XHU work with energy storage?
Yes — it is a hybrid inverter, ready for a high-voltage (HV) battery. Compatible models: AXE 5.0H-E1 (HV rack).
How many phases and MPPT trackers does the WIT 40K-XHU have?
The inverter is three-phase (230/400 V) and has 4 independent MPPT trackers. 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 40K-XHU 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 40K-XHU carry?
The product is covered by a European service warranty (5 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 40K-XHU provide emergency power during a grid outage?
Yes — the built-in UPS / black start 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 40K-XHU?
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 –
Die Installation mit Growatt spart immer Zeit – vormontierte Optionen helfen und das Zubehör integriert sich perfekt für die Komplettüberwachung.