That's a great pic @Despized
Shows exactly what I had meant in my previous comment. The cold weather causes more issues for the drivetrain than the HVAC. I was surprised about that prior to the new energy graph. All I knew before was that when it was cold, my power usage went up and I attributed it to my heater. Turns out the heater isn't as big of a part as I thought.
Perhaps the graph is a bit misleading. The graph tells us an extra 22.5% is used due to cold weather, but the breakdown is a bit misleading because it says only 7.8% was used by Climate, suggesting more losses by the air drag and tire drag. In reality, I think more was used for “heat” than what’s reported under “Climate” and here’s why:
Driving in the cold will cause access heat loss from the entire car, including the passenger compartment as well as the battery pack.
It's the same HVAC system used to heat the battery and the passenger compartment. You have the two motors that generate heat and the Heat Pump that moves the heat around + generates heat. In -6F, the Heat Pump can’t scavenge heat from the ambient air outside, so 100% of the heat needed to keep the battery+passengers warm is heat loss, again creted by compressor + two motors.
Certain amount of heat generated by the hvac system is reserved for maintaining the appropriate battery temp. This is likely reported under "Driving" segment and not under "Climate" or "Battery Conditioning"; the former shows "cabin heat energy" and the latter shows access energy used raising the battery temp for super charging.
What the graph does not show is how much extra energy is used to maintain optimal battery temp for driving. This is likely reported under "Driving" part of the energy graph which also accounts for things like extra air/road drag, drivetrain losses, etc.
Again, we know that the sum total of all additional losses amounted to 22.5%. We don’t get a breakdown of each component (this would likely be impossible or just an estimate).
I think in addition to 7.8% Climate losses, a large
portion (maybe another 7-8%?) of the extra "Driving" energy is due to raising/maintaing battery heat (again, not captured by "Climate" tab), which is why I think the graph is misleading; it causes to people to think that only extra 7.8% energy is used for “heat” during the cold climate, when in reality it’s probably double that (if you consider the car as a whole).
Tesla could give us another tab to separate this extra energy used to heat the battery from "Driving," but that might again confuse people, so I’m not necessarily advicating for that (although I personally would like to see it).
Additionally, It may also be tricky to figure out exactly how much of the total heat generated is used to maintain the cabin heat and how much for battery heat, since both are part of the same "HVAC System." The part currently reported under "Climate" is a fraction of that total energy, and is probably just an estimate.