Tesla CEO Elon Musk: 100 kWh Battery Pack Probably As Large As We’re Going Please say it isn't so!! For those of us who live in cold climates, 100kwh simply isn't enough to make a lot of trips if you want to ride in a comfortable cabin. I can tell you that to make a 300 km trip, in the cold dead of winter, with heat, at a reasonable speed and with cabin heat, and with a reasonable safety margin you're looking at AT LEAST 130kwh. My P85D, while a great car, simply could not be my only car. And neither could a 100. Please keep pushing on the battery size!!!!