Right, so you won't be able to use an app to monitor your Powerwall while it's offline... the battery's still going to work. Backup and off-grid are advertised use cases. Tesla's cars have the "cloud-connected, remote-controlled" stuff too, but they don't stop in the middle of the road if you leave cell phone coverage.

The nominal product life is 5,000 charge/discharge cycles, or 13-14 years if solar powered. Maintenance monitoring, including battery deterioration, is remote, from Tesla's end. Will that service still be running in 2030?

There will have to be onsite maintenance for battery/invertor swaps long before any battery power product, let alone energy backup, reaches 5000 cycles of lifespan.

It's not hard to imagine the solution: fall back to sane defaults like every other system not connected to the cloud.

"It's not hard to imagine the solution: fall back to sane defaults like every other system not connected to the cloud."

Almost nothing behaves like this - even if it claims to.

A good example is the sonos music system. They claim that it will work properly (with your local music source) without Internet access. That is false.

One example is Tesla cars. They work fine when not connected to the cloud, although you'll want to occasionally connect to install new firmware.

This whole thread is based on speculation -- the details are not yet known.

Except that doesn't always happen. Plenty of companies don't have the foresight to think about sane defaults.

There was some IoT dog feeder that didn't have sane defaults posted here a while back.

I know I know "but Tesla". Sure, maybe they'd be different. Or maybe not.

So let's just assume the worst, right?