SAE wants to certify NACS by end of year, and fix plug & charge too
SAE has voted unanimously to form a task force to expedite its NACS standardization process, and thinks that this process could finish by the end of the year – much earlier than we expected. We spoke with the chair of the task force for some insight on what the process might look like.
Tesla released specifications of its charging connector in November 2022. It called it the “North American Charging Standard,” which was somewhat of an absurd name at the time, given that Tesla was the only company using it.
However, Tesla’s argument was that most of the cars and most of the DC charging stations in America already used Tesla’s connector, so it should be considered a de facto standard anyway.
For a few months not many people took this seriously, until Ford shook up the industry by announcing it would adopt the NACS plug on upcoming vehicles. Soon after, GM made the same move, and now basically everyone else has.
So now that we have what looks like a standard, the professional engineering organization which develops industry standards has taken up the flag of creating a real, independent standard that is no longer in the hands of Tesla.
This is an important move because many governments and companies would understandably have an issue with a single company having control over a standard that, at this point, it seems like everyone is planning to use.
NACS standard could come this year, named “J3400”
We talked to Rodney McGee, Ph.D., of the University of Delaware, who is chairing SAE’s NACS task force.
The most important thing he told us is that the SAE Task Force aims to publish its work by the end of this year, only around six months after the start of the standards process. This is significantly faster than we thought it would take to complete the process.
McGee said that SAE is the only standards-setting organization that would be able to publish NACS this quickly, because the timelines for meetings and consensus in the ISO and IEC, two other standards organizations, are much longer due to the complex document processes used by these international organizations.
Another reason for this quicker timeline is because the NACS connector already exists on millions of vehicles, and makes up the majority of the installed base in the US. Since their stations are listed to UL standards and have been proven in the real world, many questions are already answered.
The standard will likely take the official name “J3400,” similar to the name of the current J1772 plug used in SAE CCS chargers. Though it could colloquially be known as J3400, NACS, or even “the Tesla plug,” depending on which name the EV-owning public seizes on.
But McGee told us that this his interest in NACS isn’t just on the DC side of charging, where most of the public’s imagination has focused, but on AC charging where the vast majority of actual charge sessions occur. It turns out that NACS is superior to J1772 for AC charging in one significant way – it can use an input voltage of up to 277 volts, whereas J1772 uses 208-240V.
This not only enables faster AC charging due to higher voltages, but more importantly makes for easier setup on commercial electricity supplies, which is often supplied as 480-volt three-phase power, of which a 277-volt single-phase circuit can be used for charging. This could make public AC charging – in parking garages for apartment buildings or workplaces, for example – cheaper and easier to install since commercial customers won’t need to install their own transformers.
McGee said that Tesla has been very helpful with the process in the last two weeks since SAE proposed making NACS a real standard, and is leaving the future of NACS up to a consensus-based standards process.
This has helped to allay some concerns across the industry, especially in Europe, which was skeptical that NACS could be a protectionist move. Europe has mandated non-proprietary charging connectors before and recently wasn’t happy about EV protectionism in the US Inflation Reduction Act, so this recent groundswell of support for a standard controlled by one American company was met with some skepticism. Having a standards-setting organization in control of the future of NACS makes it much more palatable (and might have led to Mercedes’ announcement to adopt it last week).
Why Plug & Charge is broken and how to fix it
Plug & Charge, a colloquial name for the ISO 15118 standard which allows simple “plug in & walk away” operation of public charging stations, has had a long and difficult implementation process. For years charging station providers have promised it’s just around the corner, but it seems to never materialize.
This is part of why Tesla leads in charging experience satisfaction, because plugging into a Supercharger is a simple process that takes seconds, whereas other chargers might require a subscription, a payment app, swiping a credit card, or at the very least waiting the better part of a minute for authentication to occur before charging initiates.
Besides these user experience issues, McGee pointed out one of the lesser-discussed reasons the standard has been hard to implement in the US, and how the SAE has been working on that problem since before NACS, and sees NACS as a opportunity to further its effort.
Plug & Charge requires a Public Key Infrastructure on the back-end to authenticate vehicles and payments. Public keys are a cryptographic mechanism that allow for secure authentication – one example is website certificates, so your computer can know that it is looking at a legitimate website.
In Europe, this PKI is provided by a company called Hubject, which verifies charging sessions on European public chargers.
But in the US, nobody has coalesced around a single company or organization to provide these certificate services yet. McGee said this is a major obstacle to Plug & Charge in the ISO 15118 standard, first published in 2014, since it is a technical standard did not initially prescribe solutions that were practical for the market.
SAE participants see the wider efforts around the NACS process as an opportunity to solve this problem going forward. Since the industry is shifting to NACS, this disruption could serve as the right time to solve this problem. It is engaging with industry (through SAE-ITC) to create a PKI for NACS which will hopefully solve this problem going forward.
Electrek’s Take
We were surprised to hear that NACS could be certified as a standard by the end of this year.
In the past, standards have taken much longer to develop – in fact, that’s why we even have the Tesla plug in the first place.
When Tesla was building the Model S, there wasn’t a standard that could do both AC and fast DC charging in the same plug. The rest of the industry – and the SAE – was slowly working out the CCS standard, but Tesla couldn’t wait any longer and went its own way, building the Tesla plug and later revealing the Supercharger network.
Now, more than a decade later, that Tesla connector looks likely to become the main charging standard in North America.
So the idea that this could be approved by the end of the year definitely raised our eyebrows, given the history of charging standards implementation and sometimes-long timelines involved.
And we’ve had a lot of questions about Plug & Charge and how long it has taken to implement in the past, so the conversation with McGee was enlightening on that front. It’s good to hear that a solution might finally be around the corner.
But this is a bit of a double-edged sword – while the NACS disruption gives an opportunity to solve the Plug & Charge problem for NACS, increased focus on the new charging standard might mean that nobody bothers to fix it for CCS, as it rapidly becomes considered a “legacy standard” the likes of CHAdeMO.
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Global renewable developer and energy giant RWE has halted its US offshore wind operations “for the time being” because of the “political environment” the Trump administration has created.
RWE, Germany’s biggest electricity producer, said in March that it had dialed back its US offshore wind activities. But now, CEO Marcus Krebber said in a speech transcript, which he’ll deliver at the company’s Annual General Meeting in Essen on April 30, that its US offshore wind business is now closed (but it wasn’t all bad news):
In the US, where we have stopped our offshore activities for the time being, our business in onshore wind, solar energy, and battery storage has so far been developing very dynamically. At the start of this year, we reached an important milestone when our US generation capacity hit the 10 gigawatt mark. The construction of a further 4 gigawatts is secured.
He went on to say that renewables have created regional value and jobs, but that the company remains “cautious given the political developments.” RWE has introduced more stringent requirements for future US investments:
All necessary federal permits must be in place. Tax credits must be safe harbored and all relevant tariff risks mitigated. In addition, onshore wind and solar projects must have secured offtake at the time of the investment decision. Only if these conditions are met will further investments be possible, given the political environment.
About half of RWE’s installed renewable capacity is in the US, where it’s the third-largest renewable energy company through its subsidiary, RWE Clean Energy. RWE holds the rights to develop US offshore wind projects in New York, Louisiana, and California.
RWE paid $1.1 billion for the New York lease area in 2022, where it’s meant to develop the 3 gigawatt (GW) Community Offshore Wind with the UK’s National Grid. Community Offshore Wind was projected to come online in the early 2030s and expected to power more than a million homes.
The developer paid $5.6 billion for the Louisiana lease in the Gulf of Mexico in 2023 as the lone bidder for development rights, and the Canopy Offshore Wind project off Northern California was not expected to be completed for another decade.
Read more: Trump admin halts $5 billion NY offshore wind project mid-build
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It’s that time of year again, time for events across the country to show off electric vehicles at Drive Electric Earth Month.
Drive Electric Earth Month is an offshoot of Drive Electric Week, a long-running annual tradition hosting meetups mostly in the US, but also occasionally in other countries. It started as Drive Electric Earth Day, but since not every event can happen on the same day, they went ahead and extended it to encompass “Earth Month” events that happen across the month of April. It’s all organized by Plug In America, the Sierra Club, the Electric Vehicle Association, EV Hybrid Noire, and Drive Electric USA.
Events consist of general Earth Day-style community celebrations, EV Ride & Drives where you can test drive several EVs in one place, and opportunities to talk to EV owners and ask them questions about what it’s like to live with an EV, away from the pressure of a dealership.
This month, there are 158 events registered across the US and 1 in Mexico (including one online webinar about things to consider when purchasing an EV).
Events have been happening all month, but the biggest weekend is this upcoming one, APril 26-27.
One really neat event was the Asheville event, which showcased the resiliency of EVs in an area devastated by Hurricane Helene, which was made more severe by climate change. That event was attended by the Rivian R1T which famously got dragged 100 feet submerged in mud and came out running fine.
But the bulk of the events happened on the weekends surrounding Earth Day, April 22, so there were several last weekend and will be even more this upcoming weekend.
There are plenty of events in the big cities where you’d expect, but Plug In America wanted to highlight a few of the events in smaller places around the country. Here’s a sampling of upcoming events:
- Big Island EV – Cruise and Picnic in Waimea, HI on April 26, 10am-1pm – EV drivers will congregate in various places around the Big Island (Kona, Waimea, Waikoloa and Hilo), then drive up Saddle Road to the Gil Kahele Recreation Area on Mauna Kea for a potluck and a chance to talk about the experience of owning EVs on the Big Island.
- Santa Barbara Earth Day 2025 and Green Car Show in Santa Barbara, CA on April 26-27, 11am-8pm – This is part of Santa Barbara’s Earth Day celebration, which routinely attracts 30,000 participants and is one of the longest-running Earth Day celebrations on the planet. The Green Car Show includes ride & drives and an “Owners Corner” where owners can showcase their EVs and attendees can check them out and ask questions.
- Earth Day’25 – EV’s role in a sustainable future in Queretaro City, Mexico on April 26, 9am-4pm – The sole Mexican event, this is a combined in-person/online seminar at the Querétaro Institute of Technology.
- Norman Earth Day Festival in Norman, OK on April 27, 12-5pm – Another municipal Earth Day festival, with hands-on activities for kids to learn about the environment. A portion of the parking lot reserved for an EV car show for EV owners who pre-register to show off their vehicles.
- Oregon Electric Vehicle Association Test Drive & Information Expo in Portland, OR on April 27, 10am-4pm – This one is at Daimler Truck’s North American HQ, and will have several EVs for test drives, owner displays (including DIY gas-to-EV conversions), and keynote presentations by EV experts. They’ll even have a 1914 Detroit Electric EV available for test rides!
- And, we at Electrek want to give a shoutout to Rove’s EV Drive Days in Santa Ana 10am-3pm April 28 – ROVE is the company behind the “full-service” EV charging concept that we’ve talked about several times here on Electrek, and we like what they’re doing for EV charging. They’ve hosted a few community events, and this is their contribution to Earth Month.
Each event has a different assortment of activities (e.g. test drives won’t be available at every event, generally just the larger ones attended by local dealerships), so be sure to check the events page to see what the plan is for your local event.
These events have offered a great way to connect with owners and see the newest electric vehicle tech, and even get a chance to do test rides and drives in person. Attendees got to hear unfiltered information from actual owners about the benefits and trials of owning EVs, allowing for longer and more genuine (and often more knowledgeable) conversations than one might normally encounter at a dealership.
And if you’re an owner – you can show off your car and answer those questions for interested onlookers.
To view all the events and see what’s happening in your area, you can check out the list of events or the events map. You can also sign up to volunteer at your local events, and if you plan to show off your electric car, you can RSVP on each event page and list the vehicle that you plan to show (or see what other vehicles have already registered).
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