Afore New Energy has been making PV inverters since 2010 and has a single-phase hybrid line built for the European market, CEI 0-21 certified for grid connection in Italy.
On litio.store you will find the AF3.6K-SL, the 3.6 kW single-phase hybrid with 48 V storage. It is the size for a flat or a small house: two MPPTs and four independent strings, which is a lot at this power and matters when the roof has pitches facing different ways.
The built-in UPS function switches in under 10 milliseconds: when the grid drops, loads on the backup output do not notice. IP65, so it can go in an unheated room, and 20.5 kg that one person can mount.