New Car Charging monitoring device - how much history before I swap over?

[johnwb87]

I've just had a CT based energy monitor fitted to my EV charger. This means it local, updates more frequently and is more accurate. All benefits over the current cloud integration I use.

So the question is how much history should I build up before I change to the new energy sensor in apps.yaml. I use LoadML for my forecast, that feels relevant.

[gcoan]

Interesting question. Load ML works principally off its stored load history database (which is house load minus car load).
So as long as you don't delete the training database or tell load ML to retrain, it should be OK to swap after a day of new sensor history in HA

[johnwb87]

I was looking at the LoadML documentation and saw the part about fetching the full HA history for curriculum runs. Then the history takes precedence over the database.
To play it safe I’m going to wait until I’ve reached the recorder limit.