Unreliable & lack of support in UK
App hardly ever works - network timeout, (null), server not responding ... When it does very very very slow login Little to No UK support to help Inaccurate data in the app when you are lucky enough to get in If server.growatt is down in China you cannot monitor or setup your inverter Inverter is good but cloud, app, monitoring & support is beyond poor No integrations with energy suppliers like others do A green energy company that drains your phone battery quicker than they can charge theirs as the app is a phone killer You need to be technical (I am) to modify settings but there are no built in easy dynamic configurations Weird behaviour on when the inverter draws off grid even though solar and battery have ample capacity Serious lack of communications When it all works it's 5 star on price, but after that everything goes south big time