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Guides for Growatt inverter owners
What we have learned reading these systems day after day, written down for owners and installers. No sales pitch, just the things worth knowing.
Growatt monitoring: the ShinePhone delay and the local alternative
Why ShinePhone figures arrive late, what happens when the internet drops, and how reading the inverter locally over RS485 changes things.
- The Shine stick uploads data every few minutes; the app shows what the server received, not what the inverter does now.
- Local reading over RS485 Modbus gives values every few seconds, on your own network, with or without internet.
- Both can run side by side: the stick keeps feeding ShinePhone, the local monitor feeds your screen and Home Assistant.
What Load First, Battery First and Grid First do on a Growatt hybrid, when each makes sense, and how to see the effect in your data.
Read the guide → 3 min readGrowatt solar surplus in Home Assistant: water heater, car and heat pumpHow to detect real surplus on a Growatt hybrid, why the refresh rate matters, and three automations for the water heater, the car and the heat pump.
Read the guide →Try it, click, copy
Interactive pages that answer questions faster than a long article.
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:
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
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.
A quick question?
The FAQ answers most of them, with a search box.
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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