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What are folks using for data collection and display? Grafana? Splunk? For something like splunk are there existing templates that are popular? Does SE allow import of panel by panel data with their API key?
Used rhodesman/teslaPowerDash as mentioned above to get things set up on a Raspberry Pi. Used mihailescu2m/powerwall_monitor as a template dashboard and expanded from there. Also used VirtualWolf/powerwall-to-pvoutput-uploader set up on the same Rpi to export all the Gateway API info to PVOutput for long term storage/review of my data. Bit of a learning curve for all of these for someone new to the Rpi world, but happy with the results so far. Early days for my system, so we will see how I use each of these going forward. Fun project though for a data geek.
This Grafana Powerwall-Dashboard project includes power flow animation, monthly graphs, savings, string data, voltage, frequency and powerwall temps and capacity graphs (good for watching battery capacity degradation trends): jasonacox/Powerwall-Dashboard
There is a PVOutput tool that you can use with it as well.