The pictures on Chargemap show that there used to be an innogy charger here, later replaced with a Mennekes charger.
There are 2 parking spots crossed out with the EV logo in the middle.
From the pictures and comments, it looks like parking is free and I don't see any gate. I don't know whether BKW use the charger themselves or if it's only for the public.
A comment from July 2021 says
Due to construction work, the charging station is not accessible from July 2021 until October 2021.
The oldest comment on Chargemap is from March 2015.