IoTaWatt has a built-in webserver with both built-in reporting/graphing and the ability to dump the data into influxdb:
https://docs.iotawatt.com/en/master/graphPlus.html#
https://docs.iotawatt.com/en/master/influxDB.html#
There are Hubitat drivers already built to pull data into Hubitat.
The one from ogiewon:
And mine:
Both drivers are using the built-in API on the IoTaWatt device to pull the data. This could also be used for any other homegrown solution:
https://docs.iotawatt.com/en/master/query.html#
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