Usually you want some way of monitoring how much energy your panels are producing. This helps to realise you need to clean the panels or do some maintenance if panels start failing. Or it may be useful for scheduling home appliance usage.
But in practice this almost always means connecting to the internet, because the simplest interface is wifi and data collection/display at the producer's servers. So any extra features == internet connection.
But in practice this almost always means connecting to the internet, because the simplest interface is wifi and data collection/display at the producer's servers. So any extra features == internet connection.