Capturing Energy Used During Battery Preheat and Cabin Preconditioning

I have noticed that my Model Y uses utility power when preheating the battery and preconditioning the cabin. I have it set to precondition by 6:30 AM. As far as I can tell, the energy usage is as shown below though I'm not sure what's happening while it's drawing power. 

TeslaFi captures the energy used while charging great. It just doesn't seem to capture the energy used during the preconditioning. Is that data available through the Tesla API? Can we get the kWh used in TeslaFi?

Thanks for considering this!