Tesla shares 48V architecture with other automakers to move the industry
One of the less obvious features of the Tesla Cybertruck is its vehicle voltage architecture. The Cybertruck is the first EV from the automaker to use a 48-Volt (48V) electrical system implementation throughout the entire vehicle, as compared to the 12V systems that are used in pretty much every other vehicle on the planet. Today, Tesla shared its 48V implementation documentation with other major automakers — including competitors like Ford.
Ford’s own CEO Jim Farley confirmed the news on X, formerly Twitter, last night.
Tesla CEO Elon Musk also chimed in.
The consequences of Tesla’s actions won’t be immediately obvious in any other carmaker’s products, as they will likely take a long time to manifest into any real changes for the industry — if they do at all. But let’s take a step back.
Why does 48V architecture matter?
48V architecture is a huge deal not because it enables any particular feature or capability for any one car, but because it will lead to a step change in how automakers wire, accessorize, and electrically engineer their vehicles.
The first mass-produced vehicles generally used 6V architecture to power things like headlamps, and the industry broadly began to adopt 12V electrics in the 1950s. By the late 1960s, almost every car on sale in the US used 12V electrics — power windows, interior lighting, cigarette lighters, brake lights, ignition spark, batteries, and more all unified around this common voltage standard. This change was a big deal, because it meant that the suppliers who built a lot of these electrically-driven components could easily adapt their products to work with any car. Parts became yet more standardized (plus, more affordable and reliable), and eventually 12V became the universal standard for vehicle electrics.
The problems with 12V architecture, though, have been looming (pun intended) for years. Because of the low voltage of this architecture, delivering sufficient power to all vehicle systems that need electricity became more and more complex. And as cars integrated more and more electrical components over the years, this led to ruinously complicated vehicle wiring layouts. (I want to be clear: I am vastly oversimplifying the nature of the challenges of 12V architecture, and it should be obvious by now I’m not an electrical engineer. I probably shouldn’t be allowed to be too close to a wall outlet, frankly.)
Switching to 48V architecture alleviates a huge number of challenges automakers are facing with 12V. The biggest one, though, is complexity: You need far less complex wiring harnesses to power all your vehicle systems, because each wire can supply far more power and voltage in a 48V system. 48V architecture also potentially improves overall electrical efficiency for reasons that I am not sufficiently qualified to explain beyond a kindergarten level, meaning your car’s accessory systems may require less power overall to operate (quite important for an EV).
12V roadblocks remain despite Tesla’s action
The challenge in adopting 48V architecture primarily lays in the vehicle supplier ecosystem, but that conclusion requires a bit of context setting.
If you cannot convert all of a vehicle’s systems to 48V architecture, the benefits of using such an architecture start to diminish pretty quickly in the form of introducing new complexities (i.e., a hybrid 48V / 12V vehicle architecture). As such, most automakers have clung to 12V because they know it and it works.
If an automaker decides to move to a 48V architecture, whatever car it builds must use 48V-ready accessories. But, suppliers aren’t incentivized to build such accessories without sufficient demand. While carmakers like Ford certainly have the power and scale to commission 48V parts independently, the per-unit cost of those components is likely to be substantially higher than their 12V equivalents — especially if they’re being produced in comparatively low volumes. And, many carmakers would be forced to make such a transition slowly over their entire vehicle lineup (it’s worth noting that ICE vehicles can use and would benefit greatly from 48V systems, too). And so, most carmakers stick with 12V. It’s a chicken-and-egg kind of issue.
Why did Tesla share its 48V architecture?
To be frank, Tesla isn’t sharing its 48V architecture from the Cybertruck for purely altruistic reasons. Once you understand the conundrum around vehicle suppliers in the 12V world and making a transition to 48V, things start to come into greater focus. Tesla knows that transitioning to 48V is going to be incredibly difficult for legacy OEMs, and while there is potentially upside for Tesla in such a change (more on that in a moment), this is something of a PR move.
By publishing its 48V architecture, Tesla is saying “OK, we’ll show you how we did this thing — a thing you say is really complicated and difficult and would take years to replicate. You can just copy us.” But Tesla knows full well that even a powerful and well-resourced company like Ford can’t spin up a 48V accessory supply chain overnight, and that such a change would incur very substantial non-recurring engineering work (NRE, as it’s known in some industries).
For Tesla, though, there are theoretical benefits in the event the wider industry switches to 48V vehicle systems. The biggest one is the supply chain. The more components in the global vehicle supply chain that are designed for 48V vehicle systems, the lower the cost of those components will become over time — through volume, competitive engineering, and increased reliability. The second is a bit more nebulous, but arguably just as important: Engineers and other skilled workers in the industry will coalesce their work and knowledge around 48V systems, reducing the amount of redundant work happening and increasing the number of workers in the hiring pool who can understand and innovate on Tesla’s systems (and who can bring their knowledge to Tesla, barring any intellectual property infringement, of course).
Electrek’s Take
It’s hard to see a downside to this move for anyone — for Tesla, the industry, or for the engineers designing the vehicle systems themselves. And it’s plain that the supplier ecosystem needs a kick in the pants to accelerate the transition to 48V, and that the benefits of such a transition are very substantial.
But it’s much harder to say how much of an impact Tesla’s decision to share its 48V design will actually have. Clearly, automakers are already incentivized to move to 48V, but doing so is challenging for a reason — it’s not just laziness. There are legitimate (if frustratingly financial and logistical) reasons that the 48V transition is moving along slowly.
It’s very possible that providing publicity around this relatively esoteric technical issue will be the greatest factor in instigating more aggressive work to implement 48V vehicle systems, as opposed to any technical know-how gleaned from Tesla’s documentation.
It should also be noted that Tesla has two distinct advantages in transitioning to 48V that legacy automakers do not. The first is being unusually vertically integrated in its approach to building vehicles — Tesla designs almost all of its own vehicle systems, even if they may be procured from third parties who actually manufacture them. The second is that Tesla doesn’t have many legacy vehicle designs to support or consider in deciding to transition electrical architectures. Put another way, Tesla’s focus on independent engineering and low legacy debt are huge reasons it can introduce a 48V vehicle while other auto OEMs continue to stick to 12V and likely will for years from now, even in their EVs. And simply telling other carmakers how it built a 48V system won’t change those realities overnight.
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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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