I charged my Rivian R1T at home for a month I will go over cost using the data collected with home assistant from my chargepoint CHP50 and Tesla wall connector V3. Connecticut now has one of the most expensive utility rates in the country after a recent 50% increase and no off peak savings.

The Chargepoint CHP50 is working great with the Rivian you can purchase it here https://amzn.to/3JeQBBz

I use these Kasa Smart Plugs to monitor power use of other devices in the home with home assistant https://amzn.to/3JeS76J email [email protected]
twitter @jeff_keenan
web https://www.keenansystems.com

Use my referral link to buy a Tesla and get up to $250 off and 3 months of Full Self-Driving Capability.
https://ts.la/jeff383315