Tesla took over a decade before they open-sourced their supercharger standards. From Tesla's own website: "NACS was originally developed by Tesla, deployed in

Tesla took over a decade before they open-sourced their supercharger standards. From Tesla's own website: "NACS was originally developed by Tesla, deployed in 2012 with the first Supercharger and Model S vehicle and eventually published by Tesla in 2022 with the goal of industry-wide adoption." https://www.tesla.com/support/charging/supercharging-other-evs#sae-j3400 https://www.tesla.com/support/charging/supercharging-other-e...