Standards

NACS vs CCS for site hosts: which connectors to install now.

New EVs are moving to the SAE J3400 plug, while most cars already on the road use CCS1 and J1772. Here is where the standard stands in late 2026, and how to choose connectors for Level 2 and DC fast sites that will serve both.

NACS vs CCS is the connector question every site host now faces before ordering chargers. The North American Charging Standard, published by SAE International as J3400, is becoming the default plug on new vehicles, while most non-Tesla EVs built through 2024 use CCS1 for fast charging and J1772 for Level 2.

You do not have to pick a winner and hope. This guide covers where the standard stands in late 2026, which vehicles use which plug, how adapters fit in, and what to install at Level 2 and DC fast sites so the chargers you buy now keep serving drivers for the life of the equipment. It is general information, not engineering or legal advice.

The short answer For DC fast, install chargers with a native CCS1 cable and a native NACS cable. For Level 2, a NACS car can use J1772 with an adapter, so the choice is about driver convenience: mix J1772 and NACS ports where you serve the public, and match the vehicles where you run a fleet.

Where SAE J3400 stands in late 2026

NACS began as one automaker's proprietary connector and was opened to other manufacturers in November 2022. SAE International then standardized it as J3400: first as a Technical Information Report in December 2023, then as a Recommended Practice in the fall of 2024. In April 2025 SAE added two companion documents. J3400/1 sets out how adapters between J3400 and J1772 are evaluated for safety, and J3400/2 defines the dimensions of the connector and the vehicle inlet.

The Recommended Practice covers AC charging and DC fast charging up to 1,000 volts through the same compact connector, which is why one port on the car handles both. Any supplier can now build to it. For a site host, that settles the practical question: J3400 is a published, open standard, not a bet on one company's plug.

Which vehicles use which plug

By November 2026, native NACS ports were on sale or announced on models from more than twenty brands, including Hyundai, Kia, Genesis, Rivian, Lucid, Toyota, Lexus, Subaru, Cadillac, Chevrolet, Mercedes-Benz, Porsche and BMW, according to a running list kept by EVChargingStations.com. Many entries are 2026 and 2027 model-year vehicles, and some are announced rather than on sale.

The other half of the picture is the installed base. The Joint Office of Energy and Transportation notes that most current EVs use CCS1, and those cars will be parking at your site for years. Some new models also split the job, using NACS for DC fast charging but keeping a separate J1772 port for AC charging. The honest planning assumption for the next several years is a mixed fleet: CCS1 and J1772 cars, a growing share of native NACS cars, and adapters in use in both directions.

What the public fast-charging network looks like

On January 1, 2026, NACS made up 48.2 percent of public DC fast connectors in the US, CCS1 40.4 percent and CHAdeMO 11.4 percent, based on Alternative Fuels Data Center counts compiled by EVChargingStations.com. CCS1's share rose from 35.8 percent a year earlier, while CHAdeMO's fell from 14.9 percent. CCS1 is not fading from public sites: both standards are part of the network drivers use today.

Level 2: J1772, NACS, or both

At Level 2 the stakes are lower. AC charging is a simple exchange between car and charger, and adapters between J1772 and J3400 now have an SAE safety process behind them. A NACS car can charge on a J1772 station with an adapter, and a J1772 car at a NACS-only station needs the reverse adapter. Asking every visitor to carry the right adapter is the friction a good site removes.

OptionWorks best forWatch out for
J1772 onlyWorkplaces and multifamily sites with many older vehicles todayNACS drivers need an adapter
NACS (J3400) onlyPrivate fleets where every vehicle has a NACS portJ1772 vehicles need an adapter
Mix of J1772 and NACS portsPublic, retail, hospitality and mixed-use sitesSign each port so drivers find the right plug
J1772 plus adapters kept on siteA short-term bridge for staff or fleet vehiclesAdapters go missing; issue and track them like keys

MÖTEN commercial Level 2 chargers ship with J1772 connectors as standard, with a NACS (SAE J3400) connector on select models, and a NACS-to-J1772 adapter is available as an accessory. The lineup is on the Commercial Level 2 page, and the connector terms are defined in our glossary.

DC fast: install both cables

DC fast is where the connector choice carries real money. A DC session runs at high current, an adapter adds a connection point that has to manage heat, and drivers who pull in for a fast charge expect to plug in without searching the trunk. That is why the J3400 Recommended Practice addresses adapter thermal awareness, and why a native cable for each standard is the cleaner answer at a fast-charging site.

A dual-cable charger carries a CCS1 cable and a NACS cable on the same unit. Be clear about what it does not do. The Joint Office notes that a port charges a single vehicle at a time even when it offers several connectors, so two cables on one port give drivers a choice of plug, not twice the throughput. Count ports for traffic, and count cables for compatibility. The dwell-time guide covers how many ports a site needs.

Every MÖTEN DC fast charger ships with CCS1 as standard and a built-in NACS (SAE J3400) cable, so NACS vehicles plug in directly with no adapter. Model details are on the DC Fast Chargers page.

If public money is part of the project, read the program rules before you write the spec. Some funding programs set minimum connector requirements for each port, and those rules change, so confirm the current version with the program administrator.

Running a mixed-connector site

Two connector types add operating questions as well as hardware ones: how drivers find the right port, how each one is priced, and how the electrical service copes when a row of chargers is busy. The eMÖTEN CMS handles those on one console.

  • Status per connector. From the operator console you can start and stop sessions remotely, unlock a connector, change availability and configuration, and pull diagnostics, from one charger or the whole site.
  • Pricing per connector. The pricing engine can vary prices by power band, site, charger, connector, postcode, driver or network.
  • Easy for every driver. The eMÖTEN app shows a map with filtering by AC or DC, and visitors can scan the QR code on the charger and pay by card, Google Pay or Apple Pay with no app download and no account.
  • Power shared across both plugs. eMÖTEN Power, the dynamic load management layer in eMÖTEN CMS, manages chargers over standard OCPP smart charging, the same way on Level 2 and DC. Each circuit gets an amp budget, split in real time among the chargers actually drawing current and reassessed every 60 seconds, whichever plug the car used.

The details are on the eMÖTEN CMS page.

A connector decision checklist

  1. List who charges at the site: staff, residents, fleet vehicles, the public, or a mix.
  2. For a fleet, check the charging inlet on every vehicle in your replacement plan, not only the ones you own today.
  3. For DC fast, specify a native CCS1 cable and a native NACS cable on each charger.
  4. For public Level 2, plan a mix of J1772 and NACS ports, and sign each one clearly.
  5. Pull conduit and size pads for the full build, so adding or changing ports later does not mean trenching again. The site assessment checklist covers the rest of the groundwork.
  6. Check any funding or utility program rules for connector minimums before you order.
  7. Choose hardware and software on open protocols. MÖTEN chargers are OCPP 1.6, 2.0.1 ready, as our OCPP guide explains.

Notes for other markets

MÖTEN evfc supplies chargers for US sites. These notes are general information for readers elsewhere.

  • Canada. Canadian drivers are buying the same North American vehicles, so the same mixed fleet applies. For federally funded projects, Natural Resources Canada has said stations must include CCS connectors as the minimum standard, and other connectors such as NACS may be added as long as CCS remains available at the site. Installations follow the Canadian Electrical Code as adopted by each province.
  • Europe. Europe went a different way. Under the EU Alternative Fuels Infrastructure Regulation, AC chargers use the Type 2 connector and DC chargers use CCS2. NACS and CCS1 are North American plugs.

Frequently asked questions

Is NACS the same as SAE J3400?

Yes, in practice. NACS is the connector that SAE International standardized as J3400 and published as a Recommended Practice in 2024. The two names are used interchangeably.

Should a new DC fast charger have CCS1 or NACS?

Both. Most non-Tesla EVs built through 2024 use CCS1, while a growing number of new models have native NACS ports, so a DC fast charger with a native cable for each standard serves both without adapters.

Can NACS vehicles use J1772 Level 2 chargers?

Yes, with an adapter. SAE J3400/1, issued in April 2025, sets out how adapters between J3400 and J1772 are evaluated for safety. Adding NACS ports alongside J1772 removes the need for one.

Does a dual-cable charger charge two cars at once?

Not on the same port. A port charges a single vehicle at a time, so a second cable gives drivers a choice of connector, not extra capacity. Plan port count for traffic and cable types for compatibility.

#NACS #SAE J3400 #CCS1 #Connectors #Site Planning

Spec the right connectors for your site.

Tell us who charges at your site and how long they stay. We will recommend the mix of J1772, NACS and CCS1 ports, and the MÖTEN chargers that carry them.