As far as I understand it, one time involved a firmware update that had to be forced from the house (and that they didn’t feel comfortable walking me through) and the second time involved replacing the switch that detects loss of power from the utility and automatically switches the house to the batteries. They did work both inside and outside near the meter for that one.

We got one installed maybe 15 months ago. When it works it’s been great, but we’ve had Tesla out twice from the Albany office for repairs and it’s a pain scheduling with them and following up. Even then, having the batteries has made power outages comfortable. GMP can draw power from the batteries during normal operation, but when a storm is coming it goes into storm mode and stays fully charged just in case of an outage. I think they’ve been worth it.