Every few seconds
Live power flows instead of a cloud refresh every few minutes, so your automations react while the sun is still out.
Pre-order · ships on 10 November 2026
Your Growatt inverter, live, anywhere in the world
Growatt Monitor reads your Growatt hybrid inverter directly, every few seconds: on your own Wi-Fi without waiting for the ShineServer refresh, and anywhere in the world through its own free Cloud.
- Plug & play: working in about a minute
- Colour screen + Wi-Fi dashboard
- Home Assistant · JSON · Jeedom
- Free Cloud, no subscription
Secure paymentFree cancellation2-year warrantyShipped from France
≈ 1 minto set up, plug & play
< 0.5 Wpowered by USB-C
0settings written to your inverter
€0for the Cloud, forever
Plug & play
Plug it in, it works: about one minute
Your box arrives prepared and tested for your Growatt model. No app, no driver, no tools, and not a single setting to change on your inverter.
- 0:001Plug
The supplied cable goes into the RS485 port of your Growatt inverter; USB-C into any phone charger.
- 0:152Connect
Join the box’s Wi-Fi from your phone, pick your home network and set a password. No app to install.
- 1:003Watch
Open the dashboard in any browser, add it to Home Assistant, and set your alerts.
- No app to install
- No driver, no PC
- No tools, no soldering
- Nothing changed on your inverter
Pre-configured for your model
Growatt is one of the most installed inverter brands in Europe and well beyond. The usual way to follow a Growatt hybrid is the ShineWiFi or ShineLAN stick, which sends the data to Growatt’s servers, then the ShinePhone app or the web portal. It works, with two catches: the figures arrive with a delay of several minutes, and when the internet or the servers are down, you see nothing.
Growatt Monitor takes the local route. It connects to the inverter’s RS485 Modbus link and reads the registers directly: solar strings, battery, grid, house load and the energy counters of the day. You get a screen next to the inverter, a dashboard on your phone over home Wi-Fi, and Home Assistant sensors that update every few seconds. It only reads; your priority settings and your Shine stick stay as they are.
What you get
Both PV strings
PV1 and PV2 voltage and power, total solar power and the day’s production.
Battery as Growatt sees it
State of charge, charge and discharge power, voltage and temperature from the inverter’s battery side.
Grid and house
What you import, what you export and what the house uses, from the inverter’s meter readings.
Priority mode in view
Load First, Battery First or Grid First: you see which one is running, and when it changes.
Read-only, works offline
Settings stay as your installer left them, and the local dashboard keeps running without internet.
Made for the way you use your Growatt
A holiday home or a cabin
See solar, battery and grid from anywhere, and get an e-mail if the box goes silent.
Making the most of the sun
Know when the battery is full and the panels have more to give: the moment for the washing machine or the water heater.
A smart home
Every value in Home Assistant or Jeedom in about a minute, to drive your own automations.
Installers
Follow your customers’ systems with your own Cloud access, without asking for their passwords.
Home Assistant automations
Your appliances run on the sun, by themselves
Growatt Monitor tells Home Assistant how much the panels produce, in real time. Four simple rules, and the washing machine, the water heater and the car use your sun instead of the grid. Watch a day:
10:00
Your solar production
Your consumption
Automations
- Washing machine on the sun
- The car follows the sun
- Hot water for free
- Gentle evening heating
Logbook
- Solar production
- House and heating
- Washing machine
- Water heater
- Electric car
- Battery level
- From the grid
- Sold to the grid for little
Solar used at home0 %
Bought from the grid0
Self-sufficiency0 %
Saved on this day0vs. the same day without automation
Over a year0if 150 days look like this one
Simulation of a sunny day for a house with 5 kWp of panels, a 10 kWh battery, a car that needs 10 kWh and a water heater. The energy delivered to each appliance is the same in both scenarios; only the timing changes. Your figures depend on your system, your tariff and the weather.
Four flows on one chart
The dashboard puts the four flows of a hybrid system on one chart: panels, battery, grid and house. You see when the battery reaches full and the surplus starts leaving for the grid, the right moment to start the water heater or the car. In the evening you see what the battery covers and what you still buy.
The free Cloud shows it from anywhere in the world and keeps up to three years of history, separately from the Growatt portal.
Live dashboardLive
Solar3.48kW
Load1.21kW
Battery53.1V
SolarLoadState of charge
Try it
Where your energy goes, hour by hour
Pick a moment of the day: this is what Growatt Monitor shows you, live, about your Growatt system. Values simulated.
Solar—
House—
Battery—
Grid—
Cloud Access · 100% Free
Cloud Access · 100% Free: your inverter, live, from anywhere
A Growatt hybrid shares its day between panels, battery, house and grid. The free Cloud shows that whole picture from wherever you are, string by string, with import and export totals kept for three years, independently of ShineServer.
Live dashboard from anywhere
Every reading of your inverter, refreshed on its own, on your phone.
Up to 3 years of history
Solar production, consumption, grid and battery, day by day.
An e-mail if it goes quiet
Six hours without news from your box and we tell you.
Public JSON link
Home Assistant, Node-RED, a widget… no port forwarding, no VPN.
CSV export
Everything stored, ready for your spreadsheet.
Installer access
Your installer sees the system without your password; you keep your own access.
€0per month, per year, forever
Optional: your box stays fully local if you prefer. Switch the Cloud on or off in its settings at any time.
How the free Cloud works →Your Growatt inverter in Home Assistant, Jeedom and Node-RED
PV per string, battery state of charge and power, grid import and export, house load and the priority mode become sensors. Your automations can use your own solar instead of exporting it.
Home AssistantMQTT auto-discovery, no YAML
MQTTReadings published on your broker
JSON APIGET /api.json on your network
JeedomJSON plugin
Node-REDhttp request node
DomoticzHTTP/JSON polling
openHABHTTP binding
IFTTT · MakeThrough the free Cloud JSON link
Ideas people set up first
Surplus to the water heater
When sensor.growatt_monitor_grid_power shows more than 1500 W of export with the battery above 95%, the water heater or the heat-pump boost switches on.
Car charging on sunshine
The wallbox is enabled while export stays above 1.4 kW and paused as soon as the house starts importing again.
A string falling behind
If PV1 produces less than half of PV2 at midday for a week, a notification suggests checking for shade, dirt or a loose connector.
Mode change alert
When sensor.growatt_monitor_priority_mode changes from Battery First to Load First, you get a message, so a forgotten setting never costs you a cloudy week.
Plug & play
In Home Assistant in about a minute
Type the address of Home Assistant in the box, a user and its password: that’s it. The Growatt Monitor device and all its sensors appear on their own, ready for your dashboards and the Energy page.
- No YAML, no HACS, no ESPHome
- 100 % local, works without internet
- Also JSON API, Jeedom, Node-RED, Domoticz
EnergyGrowatt Monitor
Battery SOC
78 %PV power3 180 W
Battery SOC78 %
Grid power−85 W
Load power1 240 W
Last 24 hours
00:0006:0012:0018:0024:00
PV powerLoad power
Made for Growatt
| Models | Growatt SPH, MIN TL-XH and MOD TL3-XH hybrid inverters |
|---|---|
| Connection | RS485 port, RJ45 cable included |
| Your existing wiring | Untouched: the box reads, it never writes |
| Network | Your home Wi-Fi (2.4 GHz); works without internet |
| Integrations | Home Assistant (MQTT auto-discovery), JSON API, Jeedom, Node-RED, Domoticz, openHAB |
| Cloud | Free and optional: live dashboard, 3 years of history, CSV |
| Power | USB-C, under 0.5 W |
Another Growatt model? Tell us when you order: your box is prepared and tested for it.
Modbus over RS485, without opening anything
Growatt hybrids expose an RS485 Modbus link for monitoring, next to the links used by the meter and the battery. The box connects to it with the cable we prepare for your model and is powered over USB-C; its colour screen shows the live figures next to the inverter.
It shares the design of Pylon-Monitor, our Pylontech battery monitor, with an RS485 / CAN board and firmware that reads the Growatt register map.
Designed and assembled in France
Each box is prepared and tested in France before it ships, by the team that makes Pylon-Monitor for Pylontech owners.
Questions before buying? Write to [email protected]: a person answers.
From your order to your first reading
- TodayYou pre-order at €49
Payment confirmed by e-mail, with your reference.
- Before dispatchWe prepare your box
We set it up for your Growatt inverter and test it before it leaves.
- 10 NovDispatch with tracking
You receive the tracking link by e-mail the same day.
- 2 to 10 days laterPlugged in, in about a minute
Cable in, USB-C power, your Wi-Fi: your readings appear.
Growatt Monitor
€49.00
Pre-order price until 9 November 2026 · €59 afterwards
Shipping calculated at checkout
- Growatt Monitor with colour screen and RS485 / CAN interface
- Communication cable for the inverter’s RS485 link, matched to your model
- USB-C cable
- Free Cloud Access, no subscription
Ships on 10 November 2026 · free cancellation until dispatch
- Secure paymentCard by Stripe
- Free cancellationUntil dispatch, 100% refunded
- 14-day returnsAfter delivery
- 2-year warrantyPlus 30 days if your model is not supported
- Shipped from FrancePrepared and tested before it leaves
Growatt inverter screen, Wi-Fi logger or Growatt Monitor?
What each option really gives you, in short.
| Inverter screen | Wi-Fi dongle and maker’s cloud | Growatt Monitor | |
|---|---|---|---|
| Readable from anywhere in the world | — | ✓ | ✓ |
| Keeps working without internet | ✓ | — | ✓ |
| Home Assistant sensors without ESP32 or YAML | — | — | ✓ |
| A screen next to the equipment | ✓ | — | ✓ |
| Never changes a setting | — | — | ✓ |
Growatt Monitor at a glance
- Reads
- Growatt hybrid inverters: SPH, MIN TL-XH, MOD TL3-XH
- Port used
- The RS485 Modbus link, separate from the meter, the battery and the Shine stick
- Data
- Solar per string, battery, grid, load, energy totals, priority mode, faults
- Next to ShinePhone
- Works alongside the ShineWiFi or ShineLAN stick, or without it
- Where you see it
- Screen on the box, home Wi-Fi, Home Assistant, free Cloud
- Price
- €49, cable included, ships from France
Your Growatt inverter, live at home and anywhere in the world
Order Growatt Monitor today. Prepared and tested for your Growatt model, dispatched on 10 November 2026.
Plug & play: working in about a minute
Pre-order for €49Pre-order price · €59 from 10 Nov · ships on 10 November 2026 · free cancellation until dispatch