Connecting your Kostal inverter to Tibber
Most integrations can be connected directly through Power-ups in the Tibber app. Simply select the device you want to connect and follow the instructions.
Some integrations require a few extra steps. For Kostal, you'll need a Tibber Bridge and must enable Modbus TCP in the correct mode.
Which models are supported?
- Kostal Plenticore
- Kostal Plenticore MP
- Kostal Plenticore Plus
Other Kostal models aren't currently supported.
What do I need?
- A Tibber Bridge, available in the Tibber Store of your market. Only one Bridge is supported per home.
- A 2.4 GHz Wi-Fi network that both your inverter and Bridge are connected to.
- Modbus TCP enabled in the correct mode.
- A static IP address for your inverter to ensure a more stable connection.
Enable Modbus TCP
You can enable Modbus TCP in two ways:
- Through your inverter's control panel.
- Through the Kostal web interface at inverter.local or your inverter's IP address.
Select little-endian (CDAB) Standard Modbus mode.
The SunSpec mode doesn't work with Tibber because it's read-only, meaning Tibber can't control your inverter.
If you've previously changed the mode for another energy management system, switch it back to little-endian (CDAB) Standard Modbus.
Kostal only allows one Modbus TCP connection at a time. If another device or service is already connected, the Bridge won't be able to find your inverter.
Connect your inverter
- Plug the Bridge into a power outlet and connect it to your 2.4 GHz Wi-Fi network.
- Open the Tibber app and go to Power-ups to connect your Tibber Bridge, if you haven't already.
- Go to Power-ups → Solar → Kostal and follow the instructions in the app.
What can I expect?
Once connected, a Battery and Solar gizmo will appear on your home screen. Live data updates every 10 seconds.
Keep your Tibber Bridge plugged in. Without it, Tibber can no longer control your system.
My inverter isn't found
First, check that no other system is connected to your inverter through Modbus TCP. This is the most common connection issue with Kostal. Other energy management systems and AI modes must be disabled.
Then check your network:
- Are your Bridge and inverter connected to the same 2.4 GHz Wi-Fi network?
- Make sure you're not using a guest network.
- Are you using Wi-Fi extenders or powerline adapters? These can prevent devices from discovering each other on your local network.
- Temporarily disable any VPNs or ad blockers.
- Restart your inverter and Tibber Bridge.
Still can't find your inverter? Select Manual connection in the Tibber app and enter your inverter's IP address.
My data isn't updating
Has your inverter or battery data stopped updating in the Tibber app?
Disconnect your inverter and battery from power for 5 minutes, then reconnect them.
If the issue continues, check whether a firmware update is available for your battery.
Still can't connect?
Contact Tibber Support and include your Plenticore model and the step where you're getting stuck.
For the details that apply to your country, select your market in the bottom-right corner of this page to visit your local Tibber Support Center.