Defroster, AC on, and aux fans (my Hurricane has 2 mounted at top of windshield) I have found to be pretty effective.
Just keeping the air moving seems to keep it from fogging (or clears it). Doesn't have to be blasting hot air.
Originally Posted by JamieGeek
When I drove my EV I had to deal with frequent fogging and attempted a bunch of different solutions (EVs and winter don't mix: the heater is usually a big resistor which burns a lot of the battery/range).
It's EV and NORTHERN winters... Yet another reason to move south... lol - couldn't resist.