An inverter that switches off during bad weather may seem concerning, but it is often completely normal. However, in some cases, it can also indicate a technical problem.
During bad weather – such as heavy cloud cover, rain, or storms – the amount of sunlight decreases significantly. As a result, the voltage from the solar panels can drop below the minimum threshold the inverter needs to remain active.
Result: the inverter temporarily switches off or goes into standby mode.
In short:
When there is too little light, the inverter cannot operate efficiently and switches itself off.
This prevents damage to the system and energy loss.
In rare cases, bad weather can also lead to malfunctions that cause a shutdown, such as:
Grid voltage issues: lightning or strong winds can cause voltage fluctuations.
Safety response: modern inverters protect themselves by automatically switching off under unsafe conditions.
If the inverter also fails during normal or lightly cloudy weather.
If error messages appear on the display or via the app.
If the system does not automatically restart when weather conditions improve.
In that case, it is wise to consult an installer.
The fact that your inverter shuts down during extremely bad weather is usually normal and a built-in safety measure.
As soon as the sunlight returns, the inverter will automatically start up again.
