> In response, in November 2022, Tesla supplanted its previous proprietary charging connector,[10] sometimes informally called the Tesla proprietary connector,[11][12] with a new "North American Charging Standard" (NACS) and opened the standard to make the specifications available to other EV manufacturers. Unlike the Tesla proprietary connector which uses CAN bus to communicate, NACS uses power-line communication (PLC).[13] Like CCS, NACS uses the ISO 15118 protocol, making any CCS vehicle electrically compatible with NACS.[14] Only a simple pass-through adapter is needed to make CCS vehicles compatible with NACS. On the other hand, Tesla vehicles built prior to 2021 are incompatible with CCS and require an ECU retrofit to become compatible with CCS.

>One aspect of the news that seems to have flown below the radar is that the so-called NACS is effectively the next generation of Tesla connector and protocols. The connector itself is slightly modified, but backward-compatible with older Teslas.