NACS

North American Charging Standard

SAE J3400:2023 · ISO 15118

Also known as: SAE J3400

0 VEHICLES

2 CHARGERS

ADOPTION 72%

2 REGIONS

SAE J3400:2023

NACS

Regional Coverage

Region	Status	Since	Note
NA	dominant	2023	Rapidly expanding via SAE J3400
EU	transitional	—	Some OEMs adding from 2024–25
JP	absent	—	CHAdeMO & GB/T dominant
CN	absent	—	GB/T mandatory

Electrical Parameters

DC max power: 250 kW
AC max power: 19.2 kW
Max voltage: 1000 V
Max DC current: 400 A
Charging type: DC Fast

Protocol Stack

PHYSICAL SAE J3400 Compact single connector, AC and DC combined

COMMUNICATION ISO 15118-2 / -20 Plug & Charge support

ROAMING OCPP 2.0.1 Open charge network protocol

Transition Intelligence

The majority of NA CCS1 vehicles are gaining NACS compatibility via adapters or direct transition. The dual-port transition period spans approximately 2024–2026.

Transitioning OEMs

FordGMHondaVolvoPolestarRivianNissan NAStellantis NA

Timeline

2012 Tesla launches proprietary connector with Supercharger network

2022 Tesla opens NACS specification to the public

2023 Ford and GM adopt NACS; ratified as SAE J3400 by SAE International

2024 Honda, Volvo, Polestar, Nissan NA and others transition to NACS

2025 US infrastructure adapter transition completes; dual-port models phase out

Representative Vehicles

illustrative · peak kW per OEM specification

Tesla Model Y

250 kW 400V

Tesla Model 3 NA

250 kW 400V

Rivian R1T

220 kW 800V

Ford F-150 Lightning

150 kW 400V

Why this standard matters

Originally a Tesla-proprietary design, NACS reached critical mass when Tesla opened the specification in 2022. Rapid OEM adoption by Ford and GM in 2023 triggered its ratification as SAE J3400. It is now displacing CCS1 as the dominant North American standard with a smaller, bidirectional-capable connector.

API Access

GET /v1/connectors/nacs · connector detail, specs, regional status

GET /v1/compatibility?connector=nacs · vehicle × charger edges

View full API docs →

Provenance

standard SAE J3400:2023

oem Tesla NACS Technical Specification 2022

dataset DOE Joint Office EV Charging

standard CharIN Open Standards Repository