220v receptacle standard

[Bruce Tucker]

I just learned that the Oaks Mall in Thousand Oaks CA is planning on adding
a 110v receptacle to their charger mix (primarily due to nEVs).  When I
asked about adding a 220v receptacle as well, they seemed receptive.  Is the
NEMA 14-50 still the standard receptacle of choice for ev charging?
Is this what I should recommend?
Bruce Tucker