sonnen

sonnen GmbH

About this app

With sonnen App, you are empowered to manage your own clean energy anytime from anywhere. Use real-time energy data and insights to guide you on how to stay powered and protected with your solar photovoltaic (PV) system, your sonnenHome battery and energy products. Be part of the sonnenCommunity with the sonnen App and build a clean energy future.

The app allows you to:
- Get an overview of the performance of your sonnenHome energy system including your battery, PV system and EV charger (where applicable)
- Access details on your sonnen energy contracts: sonnenFlat and sonnenConnect
- See detailed insights on your household’s live energy flow
- Get real-time and historical system data on your household’s energy consumption and generation
- Choose a basic or professional mode on how you would like your energy data to be displayed
- Set your battery backup buffer so your household is prepared for an energy outage

Ratings and reviews

The latest update 8/09/25 has added labels like 'full month' but doesn't show the chart like the previous version did & I can't see anywhere in the app to change this. We have the previous version on another device & not updating until this is fixed otherwise we can't see any data at all. Please advise on how to change to view data or fix it. Edit 10/09/25 : Thank you for fixing this so promptly. It's now working again.

2025:after the latest update it logs me out like 2 a day and it takes 5 tries to log in 2024:Seems to work, as it shows the current status and historic data. However it doesn't allow a lot of changes. Additionally, the battery graph uses almost the same color for balancing and CARE (yes, all caps for some reason) making them impossible to tell apart. And the temperature is shown if Fahrenheit even if I change the app language to English UK or German, because my phone is set to English US.

The statistics reporting in the app have become extremely laggy in the past 2-3 days, often to the point where the app will advise the battery is offline or turned off. The battery and internet connection are fine though - a browser session open to the internal IP address is updating normally in real-time. Pulling down on any screen to manually refresh in the app takes 30-60 seconds to update, or just returns the offline warning. This happens on both internal wi-fi and externally to the network.

What’s new

Improved stability to ensure a more reliable experience.