Discovered today. There's a charger with 2 green spaces in the Stockhornbahn parking.
Payment is through reev. I tested with Google Pay, it started fine, but never refreshed the power or total energy while I was there. The page says it refreshes every 5 minutes, I wasn't going to wait that long! You can see your live power on the electricity reader exposed on the side of the unit. I was able to pull 11kW without issue.
Electricity is 0.45CHF/kWh. There seems to be a minimum charge of 0.50CHF.
Parking is 4CHF for 4h, 7CHF for a day. I checked with TWINT ParkingPay, you cannot pay for less than 4 hours.
There's a 2.5m height limit when leaving through the gantry on the east. But the entrance and other exit in the middle of the parking has no height restriction.
The same charger and green spaces are already visible in the October 2022 pictures on Google Street View, so it's already been there for a while. But it doesn't seem to appear in roaming apps.