I've had some opportunities now to supercharge is very cold weather. It should be noted that I typically charge after my car has been sitting outside for awhile. Usually I spend at least a half day at an office (sometimes as much as a full day 24 hrs) before driving a short distance to the supercharger. So most of my experiences have been on a somewhat cold soaked car. I suspect the situation is better for normal travel without the long periods of sitting out in the cold unplugged. The charging rates I have experienced have been anywhere from 16 kW up to about 70 kW, much lower than warm weather charging. The kW rate tends to start low and slowly climb while charging, before tapering back off when near full. Starting at about 35 to 40 kW seems common. The time it started at a measly 16 kW it was very cold and the battery was near empty. Temperature ranges during this sampling have been from about 5 F up to maybe 30 F. Another note: the car is regen limited when first heading out after the car has been sitting in cold weather. Regen capability slowly climbs as you drive the car, but it can start at almost nothing. I have a 2014 P85. I don't view this negatively or positively. Just interested in what can be expected. Would like to hear what others have experienced in this regard.