Understanding the Role of NACS in the Future of EV Charging


Photo credit: Sheila Fitzgerald / Shutterstock.com

Photo credit: Sheila Fitzgerald / Shutterstock.com

The North American Charging Standard (NACS) has played a central role in electric vehicle (EV) charging since 2012. Initially developed by Tesla, NACS is known for its dual capability of supporting both Alternating Current (AC) and Direct Current (DC) charging via a compact plug design. This versatility enables the system to deliver up to 1 megawatt (MW) of power for DC charging, catering effectively to the needs of EVs.

Tesla’s influence in the EV market in North America has contributed to NACS becoming the predominant charging standard. This is largely attributed to its widespread use in Tesla vehicles and the extensive network of Tesla charging stations throughout the United States.

Standardization and Compatibility Efforts

In July 2023, the Society of Automotive Engineers (SAE International) embarked on an initiative to standardize NACS as SAE J3400. This effort focuses on codifying elements such as plug connections, charging speeds, reliability, and cybersecurity. The move towards standardization is pivotal for achieving uniformity across EV charging systems.

Other existing standards in the EV charging domain include the J1772 for Level 1 and Level 2 AC charging, and the Combined Charging Standard (CCS) for DC fast charging. Notably, the CHAdeMO standard is still used for certain models like the Nissan Leaf, despite being gradually phased out.

Wider Adoption Among EV Manufacturers

Tesla’s strategy to open up NACS to other companies has led to its acceptance by several leading EV manufacturers. Prominent automakers such as Ford, General Motors, Rivian, Volvo, Polestar, and Mercedes-Benz have plans to integrate NACS charge ports in their EV models beginning in 2025. This transition also entails providing adapters for existing EV models to access Tesla’s Supercharger network.

While some manufacturers are in the process of evaluating NACS for potential adoption, others have not yet disclosed their plans regarding this standard.

Implications for Public EV Charging Networks

Although NACS is gaining traction, the CCS standard remains crucial in public EV charging networks, especially given the requirements for federal infrastructure funding. As a result, the U.S. EV charging landscape is expected to accommodate both NACS and CCS standards concurrently for the foreseeable future.

Network operators like EVgo are adapting by adding NACS connectors to their stations, ensuring compatibility across different standards. Moreover, EV manufacturers that are adopting NACS are facilitating access to Tesla’s Supercharger network through both in-vehicle support and adapters.

Enhancing EV Adoption and Charging Infrastructure

The wider acceptance of NACS, together with Tesla’s integration of CCS support, is set to substantially expand the EV charging infrastructure. This development is crucial in addressing concerns such as range anxiety and could potentially hasten consumer adoption of electric vehicles.


The integration of NACS by various manufacturers, along with its simultaneous existence with the CCS standard, indicates a significant transformation in the EV charging landscape. Despite the challenges in ensuring interoperability between different standards, the overarching advantage is the increased availability and user-friendliness of EV charging infrastructure. This evolution is instrumental in creating a more inclusive and accessible electric vehicle ecosystem.

This article was co-written using AI and was then heavily edited and optimized by our editorial team

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