I may be too late on this response but I mean at below -20 I can’t make it back to the Canmore charging station. Meaning yes I could make it to Louise without stopping, but I wouldn’t make it back. So yes two stops on the Canmore charge station or risk it and hope to get lucky and score one of the two level two destination chargers at Louise.
In regular conditions I would do one stop at the charging station on the round trip from Calgary. I have pushed it and made the full 360 km trip but this means coming back at below 15% battery. I usually opt for the fast charge cause with a 10-20 minute stop I can easily add the juice I need to have a good buffer.
In summer I get 400-430 highway. So yes could easily do the trip back and forth. Like I say normally in winter I do one stop but below -20C the range starts to really hurt. 2022 Lightning doesn’t have a heat pump so that’s holding its winter range back a bit. Although I’ll defer to more knowledgeable people on the forum when it comes to heat pump effectiveness as really cold temps
EPA highway range for lightning is around 430 km. However due to its aerodynamics the Lightning’s efficiency goes down a lot if you drive at the speeds most people drive at. Lot’s in the forum about this.
I’d say my summer highway range is more like 400 km if I drive 110-120 km/h.
The distance being talked about is 260 km or 65% of the “real” highway range. 35% efficiency loss for extreme cold to me sounds typical for an EV.
Like some people have said on the forum it’s theoretically possible if you precondition, drive slow, don’t have a headwind etc.
In other words if the stars align and you’re comfortable barely making it back to the house in frost bite conditions then yes it is doable. But for me I’ll stick to an extra charge to keep a buffer.