kingdragonfly: I hate to ask a stupid question, but all this "anti-islanding " is applicable to electrical generation of wind power also, right?

If you are in the Vector Lines area (Auckland), Vector offer a Tesla powerwall based solar and battery system that is both grid connected and can operate "off grid" in an outage. They also used to offer an non Tesla version of the same system. @Ruki and at least one other GZ member have those systems installed.

What you would need for this is a solax hybrid inverter+a few lead carbon batteries with an EPS relay.

My solar wont work during a power outage but as I hardly ever get one its not concerning.

kingdragonfly: I was thinking about what would happen during a natural disaster.

My understanding about lead carbon batteries only last about 7 years.

Here's an article from HomePower about various batteries

https://www.homepower.com/articles/solar-electricity/equipment-products/grid-batteries

The amount of cycles you will get out of a lead carbon battery depends on how deep you discharge it when you discharge it, if you only discharge it 20% each time you could get 11000 cycles even daily that's a 30 year lifespan.

Simply put size it correctly and you will get more than 7 years.

If you want really long lasting batteries go with NiFe but as you will find out like all batteries they have there drawbacks (charge and discharge efficiency)