Growatt and an Instagen. No info on price etc The only person
InstaGEN inverters are from longstanding british supplier Instagroup, who perhaps uniquely offer integrated systems these days but, you don’t have to use their solar panels for it to work.
The InstaGen “INS-3.6LV-EUA1” 3.6kW hybid inverter has a retail price of £500. They also do a soley grid tied inverter INS-SI-3.6 not sure on retail, as not on my suppliers list.
Growatt, is perhaps more well known in the public domain, therefore better user backup?
Growatt MIN 3.6kW hybrid inverter is around the same price, as the InstaGen hybrid and also can be grid tied.