I totally agree that a battery system is a key part of a fully functioning solar system. My Tesla Powerwall 2 is due in November, six months after the planned installation, I’m told it’s down to continual lock-downs in China. It seems to me that the original feed-in-tariff, while being lucrative for the early adopters has also been a bit of a red-herring as far as the public’s perception of the key deliverables of PV systems is concerned.
What appears to be missing from the huge array of PV system components is a device that blocks export to the grid from domestic systems but automatically allows grid supply when the solar/battery system is not meeting demand , I’m pretty confident there’s going to be a market for such a device.
Amazingly, at the time I ordered the Tesla Powerwall and gateway it appeared to be the only battery system that would continue running the house during a power cut!
