FYI, this as well as my thread earlier this week both relate to the Home Assistant Energy Dashboard and the integration with IoTaWatt (see Add energy sensors by agners · Pull Request #6 · gtdiehl/iotawatt_ha · GitHub). I don’t have solar unfortunately, so this problem did not affect me.
That said, something is unclear to me right now. In your detailed explanation you wrote:
With the above metrics, power (Watts) and energy (Wh) for a time period up to a day can be graphed using Graph+ by simply graphing the appropriate inputs and outputs corresponding to the above metrics.
How is that enforced exactly? E.g. what happens when I query Wh over a period of a year with an output making the Import/Export calculations? Is just the integration accuracy dropping or is the query getting slow?
Since Home Assistant stores the data in its own database, I think having accurate Import/Export data for a single day is absolutely enough since we poll the API anyways more often than that.
From what I understand switching to querying the API with begin=d (or even hourly) should be enough?