Everything the hub records lives on the hub. There is no cloud copy, which is the point — and also the thing to plan for.
What's kept, and for how long
- By hour for about 60 days
- By day for about 13 months
- By month for three years
That's per measurement point, for the twelve points the hub keeps history for.
How to get a copy out
History → Download CSV saves what's on screen: the selected points, the period and the metric. Summary by point saves one row per point for the period — imported kWh, cost, exported kWh and export value. Both files are built in your browser; the hub doesn't generate a file and doesn't need to.
The same records can be read over the hub's REST API if you'd rather automate it.
If a month's figures matter to you, export them. That's the honest answer: a hub that dies takes with it whatever you never exported.
What a replacement hub does and doesn't restore
The hub keeps a restore point — one copy, on the hub itself, holding settings, points and tariffs. It is not a downloadable file, and there's no separate export of the tariff plan. So it protects you against a bad change, not against a dead board.
Setting up a replacement means flashing it, running the wizard and re-entering the points and the tariff. The modules and clamps stay where they are; it's the hub's configuration you rebuild.
One thing that isn't a failure
If the MQTT broker goes away, live frames are simply dropped — nothing is buffered or replayed. The history on the hub is unaffected and can be read later, so a broker outage costs you the live stream, not the records.