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LIVE BLOG: 2023 Tesla Investor Day

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There’s a lot of excitement around Tesla’s 2023 Investor Day, and for good reason. From Elon Musk’s Master Plan Part 3, details on the company’s third-generation platform, and discussions on how Tesla could each extreme scale, Investor Day promises to be an event that is one for the books. 

Elon Musk has emphasized that Investor Day is really a lot bigger than the company’s shareholders. In past comments, the CEO noted that the “investors” Tesla is referring to in the event are pretty much all life on Earth. Yes, everyone, Tesla is thinking *that* big.

Following is a Live Blog of Tesla’s 2023 Investor Day. Please refresh this page regularly for the most recent updates. 

18:59 CST – And that’s a wrap, everyone! This is Tesla’s longest event yet (I believe) and in typical Tesla fashion, it’s overflowing with information. There’s a lot to unpack from this event, so please so stay tuned for our coverage of the 2023 Investor Day’s specifics. Till the next time!

18:59 CST – A question about Tesla’s next-gen vehicle was asked. Any details that Tesla is willing to share? Elon declined to answer the question. He noted that Tesla would have a proper product event for the next-generation vehicle. 

18:54 CST – A question about Tesla’s dry battery electrode efforts was asked. Drew Baglino noted that Giga Texas already makes dry electrode batteries. Every week, the program makes progress. 

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18:48 CST – Barclays asks to what extent the cost strategies outlined today differ by region. Tom Zhu noted that Tesla tries its best to be as localized as possible. The same is true for the labor force. This is especially notable in Shanghai. 

18:41 CST – Elon Musk noted that one thing that for the vast majority of people, things are affordability driven. He noted that sometimes, it’s easy to lose sight of how consumers acquire vehicles. It’s not that people don’t want a car. Most times, it’s a matter of whether people can afford one. “Affordability is what matters,” Musk said.

18:36 CST – A question was asked about Tesla and how China and the US’ tensions could affect the company. Ton Zhu noted that Tesla China has ample demand, sometimes more than the company can produce. Tom Zhu noted that he does not see much risk for Tesla overall

18:34 CST – Jefferies asks how many models Tesla plans to have to reach 20 million units. A question about bidirectional charging was also asked. Elon Musk noted that bidirectional charging is not that useful since Powerwall is better. Musk noted that Tesla does not plan too many models to reach 20 million cars. He estimates 10 models or so should be enough. 

Musk noted that cars today just have variants for the sake of having variants. believes that cars will be like phones. 

18:28 CST – Another question is asked about Tesla and its mining efforts. Elon noted that Tesla would address whatever is the limiting factor at any given point in time. Tesla would prefer not to get into mining, but the company will do so if needed. Drew Baglino referenced the company’s Corpus Christi lithium refinery. If Tesla could prove that things can be done faster, then the company’s suppliers could follow suit.

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Elon mentions a cathode refining facility just down the road from Giga Texas as well. Drew Baglino noted that there’s no large-scale cathode refining facility in the US for now, so Tesla had to build one. 

18:23 CST – Rod Lache from Wolfe Research asks about the timeline for Tesla’s plans. He notes that Investor Day doesn’t just seem like it’s for a vehicle. Elon noted that the most profound architectural changes would be in future vehicles. There will be changes for existing vehicles, of course. Lars Moravy noted that Tesla would be improving, especially in the next couple of years. 

18:21 CST – The break ended up taking nine minutes. But the team is back, and Elon comes out and shows a render of Giga Mexico. Musk notes, however, that the capacity of Tesla’s existing factories will be ramped. Giga Mexico will be built in Monterrey.

18:10 CST – Five-minute break! After this, a Q&A session.

18:04 CST – Kirkhorn discusses Tesla’s improvement in interior process efficiency. He noted that ultimately, Tesla’s vertically integrated software that helps run the company. Kirkhorn is also confident in Tesla’s ability to generate the income needed to make investments to achieve Master Plan Part 3’s goals.

18:01 CST – Kirkhorn highlights Tesla’s Open and SG&A. 

17:59 CST – Kirkhorn highlights that the next-gen platform is expected to enable a 50% reduction in costs. This means that the total cost of ownership of the next-generation platform would also be lower than the company’s current vehicles today. This is a big deal since the Model 3 is already cheaper to own than Toyota Corolla today. 

17:56 CST – Kirkhorn notes that cost reductions come from everywhere. He states that Tesla reduced the cost of the Model 3 by 30% since 2018 as of 2022.

17:54 CST – Zach Kirkhorn returns to the stage. This will be the final part of the Investor Day presentation. He notes that this is the first time that Tesla brought out its specific leaders to discuss their work. He thanks the Tesla team as well.

17:51 CST – Laurie Shelby takes the stage to talk about the sustainability for Tesla for employees. Tesla seems to be taking a pretty cautious strategy here. The company wants to emphasize how the company values its team. She thanks the global Tesla team. She also noted that Tesla is aligning with the TSFD to release better reports to investors.

She notes that Tesla now has 129k employees. Almost 60% are based in the US. 

17:47 CST – Tesla Electric is rolling out in Texas too! The company plans to bring Tesla Electric market by market like Tesla Insurance. The service’s rollout in Texas will include $30 charging at night for customers who sign up for Tesla Electric.

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17:45 CST – The Megafactory in Lathrop may not be as high profile as the company’s Gigafactories, but it was built in less than a year. That’s pretty incredible. Project installations are also getting faster, with the company achieving 4X installation and commissioning speed since 2019.

17:37 CST – Mike Snyder joins Drew Baglino the stage to talk Tesla’s Megapack. He noted that Tesla is now on its sixth generation of energy products, the Megapack XL and the Megapack 2. There’s been a lot of demand for the Megapack, and the Lathrop plant is ramping. This was only made possible by a maniacal focus and effort.

“This is the product that retires fossil fuels. One power plant at a time,” Baglino said.

17:33 CST – A photo of Tesla’s 50 GWh/year Corpus Christi Lithium Refinery was shared. The facility starts commissioning at the end of 2023. 

17:32 CST – Drew Baglino provides a quick update on Tesla’s battery program. No more spoons! There’s over 20x productivity from the tools the company showed during Battery Day at the pilot line in Kato Road. He also showed how Tesla’s battery factories are getting more and more efficient and simple, so they’re only getting better.

17:29 CST – Tom shares some states on Tesla service. 

17:27 CST – Tom notes that ramping a Gigafactory is all about overall equipment effectiveness and cycle time. Fremont is a rockstar here, since it’s an older factory. But despite this, it’s getting better. Tom notes that Fremont just reached a new daily record recently. 

17:26 CST – Tom notes that ramping a Gigafactory is all about overall equipment effectiveness and cycle time. 

17:25 CST – Tom highlights that Tesla can build its factories extremely quickly. He noted that this is accomplished through many optimizations, such as an in-house team that constructs factories. He noted that the team behind Giga Shanghai was also the same one that did Giga Berlin. 

Tom Zhu also confirms that Tesla has reached the 4 million vehicle mark. The vehicle was made in Giga Texas. The last 1 million cars were made in less than 7 months. 

17:22 CST – Tom Zhu and Drew Baglino take the stage. They will be discussing how Tesla would make more cars, and how much faster the company could do it. Tom notes that Tesla currently have 65,000 manufacturing employees. Tesla’s factories are also ultra high-volume. 

17:19 CST – The Tesla execs noted that the company’s Heat Pump assembly highlighted supply chain issues. Tesla solved heat pump assembly issues through automation.

17:16 CST – The Tesla execs noted that Tesla will not break the semiconductor industry if it grows to 20 million vehicles. The semiconductor industry can support the electric vehicle maker’s growth, even if Tesla slows down — which would likely not happen. 

17:14 CST – Tesla is also working with suppliers closer to their factories to decrease transportation time and reduce diesel use throughout the supply chain. This also decreases full productions stall times.

17:10 CST – The Tesla executives discuss the challenges that the company and its suppliers faced during the Covid pandemic. The ordeal was tough, though the company and its suppliers powered through to deliver.

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17:04 CST – Tesla executives Karn Budhiraj and a colleague discuss the company’s supply chain. They provide an overview of Tesla’s current supplier setup.

17:01 CST – Overall, while Tesla has already been building Superchargers for the last ten years, the company is still just starting. Tesla Supercharger V4 is being installed in Europe, and it will be optmized for charging all electric cars, not just Teslas. Amidst all this, Tesla will never forget to do some cool things in the process. 

16:54 CST – Rebecca Tinucci takes the stage to discuss Tesla’s Superchargers. She highlighted that Tesla has spent the last ten years establishing its Supercharger Network across the world. Thanks to this experience, Tesla Superchargers have the lowest deployment costs. She notes that prefabricated four-post Superchargers are being produced at Giga New York. She also hinted that Tesla plans to improve Trip Planner by projecting potential customers that might use nearby charging stations.

16:51 CST – Elon notes that Optimus utilizes Tesla’s expertise in manufacturing. Actuators, battery packs, and Optimus’ other key components are custom designed by Tesla. Elon also noted that Tesla was shocked that not a lot of parts to make a humanoid robot can be bought “off the shelf.” The CEO is also confident that Tesla can bring a working, useful humanoid robot to scale faster.

16:48 CST – Elon returns to the stage for some more updates. A video of Optimus is shown. The humanoid robot seems more refined compared to its iteration during AI Day 2022. The robot is now walking, and working on another robot. Multiple Optimus prototypes are also working.

16:42 CST – Ashok highlights that Tesla’s approach to AI systems is quite different from before. This allows the company to solve complex planning problems using artificial intelligence, among others. He also noted that manual labeling is insufficient, so Tesla is adopting an automated labeling system. Also, Dojo will perform better than current “compute” capabilities at Tesla.

16:38 CST – Ashok Elluswamy takes the stage to discuss Full Self-Driving. he notes that self-driving is actually a critical part of a sustainable future. He noted reiterated Elon Musk’s points in Master Plan Part 2, where unused cars could be used by other commuters.

16:34 CST – Pete Bannon and David Lau noted that during the days of the Model S, it did not take long before it because evident that it was easy to misassemble the car. These were adjusted in later vehicles. Today, mistakes in assembly are caught while the vehicle is being produced. 

16:32 CST – Pete Bannon and David Lau discussed how Tesla’s software and connected cars enable the company to roll out improvements at speed. This is especially useful for vehicles’ safety, which Tesla excels in. The Model S and Model X’s predictive air suspension system is a good example of this.

16:26 CST – Pete Bannon and David Lau show the path toward the next-generation platform. 

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16:23 CST – Pete Bannon and David Lau discuss more optimizations that have been done over the years. These include the shift e-fuses, as well as the replacement of lead acid batteries to lithium-ion. Costs are coming down too, such as in components like the Model 3’s center display, which has gotten cheaper over time. 

Cybertruck, Optimus, and future vehicles will also use 48-volt architecture. Cybertruck is also designed with a local controller for better wire pathways.

16:23 CST – Pete Bannon and David Lau discuss more optimizations that have been done over the years. These include the shift e-fuses, as well as the replacement of lead acid batteries to lithium-ion. Costs are coming down too, such as in components like the Model 3’s center display, which has gotten cheaper over time. 

16:20 CST – Pete Bannon and David Lau take the stage. Pete Bannon highlighted that low-voltage electronics in vehicles have been messy so far. The executives noted that from Model S to Model 3, Tesla was able to reduce its wire harnesses by 17 kilograms. Shared controllers also helped simplify the supply chain. 

For Cybertruck, Tesla is designing 85% of the controllers in the car. In the next-gen platform, Tesla is designing 100% of the controllers.

16:17 CST – Colin noted that Tesla’s next-gen vehicle will not use rare earth materials at all. They will be built in compact and high-efficiency factories. The executive stated that these are only possible because of the hard work of the Tesla team. 

16:15 CST – Colin also discusses the importance of Tesla’s power electronics and software. He also highlighted that Tesla excels in manufacturing line and automation design. This enables Tesla to design products that are both high-performance and easy to assemble. 

Tesla’s next-generation platform will have 75% less silicon carbide. Any battery chemistry will be accepted as well. The vehicle will feature a 50% reduction in factory footprint. 

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16:11 CST – Colin Campbell, leader of powertrain engineering, takes the stage. He noted that Tesla is known for speed. He highlighted that Tesla is all about efficiency. He noted that Tesla is able to achieve its efficiencies by moving as one company. Changes can then be made to both vehicles and factories. Everyone works together. 

16:07 CST – Franz and Lars noted that in the next-generation vehicle, more people (or robots) should be able to work simultaneously. Lars noted that this gives more operational density. More space time efficiency. This makes automation a lot easier. Tesla lists this as an “unboxed process.”

Franz and Lars noted that Tesla’s next-gen manufacturing would reduce 50% of costs.

16:04 CST – Franz and Lars discuss the traditional way to assemble a vehicle, from stamping, body, paint, and final assembly. Lars note that this is great, but delays in one line stops the entire thing. He stated that there are a lot of inefficiencies in the process. Lots of areas for improvement. 

16:02 CST – Franz and Lars noted that Cybertruck is a completely different animal. It is then a vehicle that needs to be approached in a completely different manner. Cybertruck was designed with the manufacturing process in mind. Lars added that the Cybertruck actually makes its manufacturing footprint small, since it doesn’t need paint or stamping. Franz reconfirms Cybertruck is coming this year.

16:00 CST – Franz and Lars noted that as time went on, Tesla had to approach its vehicles more differently. This was the case with the Model 3. The executives discussed production hell, which involved Tesla looking to manufacture a product designed to be built manually being built on an automated line. There were lots of lessons learned there. 

15:58 CST – Franz notes that during Tesla’s early days, it was a lot different. There were only a handful of people then, but Tesla was already dead set on making a difference. Franz noted that Tesla’s small teams before allowed the company to really focus on the nitty-gritty details of the car. The Model S is one of these, Franz and Lars said. 

15:56 CST – Franz von Holzhausen and Lars Moravy take the stage for Part 2. 

15:55 CST – Drew Baglino addresses the question of mineral use as the Earth shifts to a sustainable energy economy. Elon also reiterated his previous statements about lithium.He notes that the lithium in the United States is already very abundant. It’s the refining of lithium that’s a limiting factor today. 

Elon also noted that nickel is needed for aircraft, boats, and long-range cars. The vast majority of transportation will need iron. And with recycling in the picture, the resources that the world will need to shift to sustainability will be even more efficient.

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15:53 CST – The Tesla executives highlighting that transitioning to a sustainable economy will actually involve less fossil fuels compared to what’s currently being spent today. Here’s a nifty little graphic.

15:49 CST – Elon and Drew noted that these estimates for the investments needed to propel the world to sustainability are completely feasible.

15:46 CST – Drew Baglino noted that heat pumps would go a long way toward making homes sustainable. From an industry perspective, heat pumps pave the way for efficiencies. He also discusses high temp heat delivery and hydrogen. Elon notes that hydrogen will be useful for industrial processes, but it is NOT something that should be used for cars. He also sheds light on the need to shift the shipping industry to sustainability.

15:43 CST – Tesla gives a quick overview of how Tesla could create a global electric vehicle fleet. The company shows an assumption for a fleet of about 85 million vehicles. That’s already substantial.

15:40 CST – Elon notes that all forms of transport will probably be electric. But not rockets, at least for now. 

15:38 CST – Elon and Drew show a slide showing what’s needed to reach a sustainable economy. The executives noted that while these numbers may seem large, they actually are not if they’re compared to the global economy. Just about $10 Trillion investment to build sustainable energy economy.

“For a remarkably small land area, we can go fully sustainable,” Musk said. “The electrified economy will use less resources than the (fossil fuel) economy.”

15:33 CST – Drew Baglino notes that today’s energy economy is dirty and wasteful, and that 80% of global energy comes from fossil fuels. Musk highlights that the use of fossil fuels actually waste a lot of energy. He also noted that calculations for a sustainable world typically assumes the same wastage as a world powered by fossil fuels. This, Elon Musk noted, is not accurate.

15:31 CST – Elon Musk notes that there is a path towards sustainability, where the Earth could support the 8 billion people today. “There is a clear path to a sustainable energy Earth with abundance,” Musk said. 

15:30 CST – Elon Musk and Drew Baglino take the stage for the event’s first part. Elon jumps right into it. This is Master Plan Part 3. Here we go.

15:28 CST – And it’s starting! CFO Zach Kirkhorn is opening the event. Kirkhorn noted that today, Tesla is not just talking about the near future. 

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There will be three parts of the event. One, Tesla’s macro vision. Next, it will be focused on Tesla’s function. The third will bring everything back. 

15:25 CST – Well, it seems like the stage is ready for the Investor Day keynote. 

15:23 CST – Elon said the presentation starts in about 5 minutes — 8 minutes ago.

15:20 CST – Never change, Tesla. And never change, Elon. 

15:19 CST – Check out these Model Y castings outside Giga Texas. Definitely highlighting this “extreme scale” theme Elon Musk referenced. 

15:17 CST – What are you most excited for in Tesla’s 2023 Investor Day? Master Plan Part 3? More Cybertruck deets? The third-gen platform? Please sound off on our comments section below! I’m personally biased for the third-genp platform, but only because I’m a cheap guy by default.

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15:14 CST – Well, Tesla is late, and the EV community has a great sense of humor. Who’s playing the 2023 Investor Day Bingo? I have a feeling the “wears trademark jacket” and “cracks joke” are getting crossed out really fast.

15:13 CST – I just noticed that the light show graphics that Tesla has been showing in its livestream are shaped like body panels. Look at that, it’s the rear seats of the Model Y. It is a Model Y, right?

15:10 CST – The stream for Investor Day has not really started yet, but there are already some nice updates from attendees of the event. Take the Cybertruck production beta, for example. That beast looks pretty good. I’m not sure how to feel about the five-seat layout, though. I kinda miss the six seats in the original prototype.

15:07 CST – A close-up of that Investor Day graphic shows that the EV bodies may be Model Y crossovers, at least based on the shape at the rear. The event is now a few minutes late, which, in Tesla terms, is still pretty early.

15:05 CST – By the way, if you’re just joining us, welcome! Here’s a livestream of the event too. 

15:02 CST – Tesla’s intro video for Investor features the graphic in the event’s invite. They were not kidding about this “scale” thing. It reminds me almost of “The Matrix.”

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15:00 CST – Tesla’s livestream link for Investor Day is live! Here we go!

Don’t hesitate to contact us with news tips. Just send a message to simon@teslarati.com to give us a heads up.

Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Elon Musk

Tesla shows what Roadster drivers will see on screen before thruster activation

Tesla’s Roadster video reveals a fighter jet inspired cockpit with a 5,500 PSI thruster gauge.

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The next generation Tesla Roadster’s touchscreen, shown in Tesla’s first official look at the car’s interface. (Credit: Tesla/X)

Tesla has given future owners their clearest look yet at the cockpit of its next generation Roadster. In a 34 second video posted to X on Friday afternoon, the company walked through the car’s touchscreen with a caption: “Inspired by fighter jet cockpits, Roadster’s interface was designed around the pilot.”

The clip opens on a black screen with red graphics and a 3D wireframe of the car, which sits beside the Roadster’s squared off yoke. Tapping parts of the model brings up controls for the rear wing, including low drag and high downforce positions, along with a charging page with a charge limit bar and a small music player. A row of tabs along the bottom reads Home, Vehicle, Listen, Climate and Navigate.

Most of the video is spent in Track Mode. The dashboard shows a live circuit map, a list of session lap times, brake and motor temperatures, and pressure and temperature readouts for each tire. A setup page lets the driver pick Auto, Low Drag, High Downforce or Custom aero modes, adjust aero balance and brake balance, and switch stability and traction control off. Along the bottom, a status bar reads “Thruster · 5,500 PSI” next to a “Boost Ready” indicator.

That gauge ties the software to the hardware Tesla showed off near Waco, Texas on October 15. The Thrust and Rocket versions use cold gas thrusters fed by carbon overwrapped pressure vessels, and Tesla lists 0 to 60 mph times of under 0.9 seconds and under 0.59 seconds for them, as Teslarati detailed in its breakdown of the three Roadster configurations. The base Performance car relies on a fan and ground sealing system for grip, and the aero settings on screen match the active wings and suction setup covered in our look at how the Roadster generates downforce.

The Roadster layout is a departure from the rest of Tesla’s lineup. Instead of a map centered screen, the Roadster puts the car itself at the center of the home page, and Tesla’s Roadster page lists two smaller forward displays alongside the main touchscreen. Tesla has not said whether any of the Track Mode telemetry will make its way to the Model 3 Performance or other vehicles.

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The interface could still change before deliveries. Elon Musk said at the event that Roadster production will begin in 2028, and Tesla says the flagship Rocket version is not approved for public road use. Reservations are open with a $50,000 payment, while Thrust is listed as a limited release and Rocket is invite only.

Those who want to see the car in person will get their first chance this weekend. The Roadster goes on display in the lobby of the Petersen Automotive Museum in Los Angeles from October 24 to 27, according to Sawyer Merritt, the first time the public will be able to view it up close.

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Elon Musk

Tesla reveals Optimus Academy, where robots teach themselves

Tesla has begun building production quality Optimus robots in Fremont and revealed its training plan.

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Concept rendering of Tesla Optimus in mass production

Tesla has started building Optimus on the high volume line it set up inside its Fremont factory, and the company says the robots coming off it are the first that meet the bar for a real product. “The bots coming off this line are the first production-quality bots that we have manufactured,” Tesla wrote in its third quarter shareholder letter, adding that it has “proven that the current manufacturing process for Optimus is suitable for a commercial product.”

The line sits in space that built the Model S and Model X until this spring. Tesla cleared the old vehicle line in 46 days, as Teslarati reported in July, to make room for robot production sized for one million units a year. On Wednesday’s earnings call, Elon Musk said most of the equipment for that capacity is already in Fremont, with output set to climb toward roughly 20,000 robots a week as the line ramps.

Musk described the ramp as a classic S curve. “The growth of Optimus is an S curve, but the initial curve is a shallow slope,” he said. The team is now refining the robot’s AI, electromechanical design, reliability and service life, and Musk expects that work to be finished by the end of next year, when Tesla plans to start delivering Optimus to outside companies for dangerous, repetitive and around the clock jobs.

The most interesting part of the call was how Tesla plans to teach the robots. Its cars send real driving data back to the AI team from millions of vehicles, but Optimus has no fleet like that yet. “A big difference with Optimus versus the cars is we don’t have this vast fleet of cars from which we can gather training data,” Musk said. Tesla’s answer is an Optimus Academy, where 10,000 to 20,000 robots will practice a wide range of tasks and feed what they learn into the next version of the model. Every unit off the Fremont line becomes a source of that training data.

Smarter hardware is on the way too. Tesla plans to put its AI5 chip into Optimus next year, and Musk said a new Optimus video should arrive within one or two months showing the robot completing tasks driven by AI rather than preprogrammed motions. He took aim at rival humanoid demos that only run scripted routines, saying those would not hold up in the real world.

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The supply chain is lining up behind the program. In September, Tesla certified Tuopu, Joyson and Sanhua as mass production partners for Optimus components. A far larger Optimus factory is also rising at Giga Texas, where drone footage from Joe Tegtmeyer showed the steel frame nearing completion, and Musk has pegged that plant’s long term target at 10 million robots a year.

Tesla executives also said Optimus production costs are trending toward the expected manufacturing cost of Cybercab, a sign the robot is being engineered for volume from the start. The hands remain the toughest piece of the design, a point Musk also made at the X Takeover event earlier this month, as Teslarati covered at the time, and that is where much of the current engineering effort is focused.

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The Starship moon landing number NASA and Elon Musk can’t agree on

Musk disputes NASA estimate of 22 Starship launches for Moon landing, predicting 6 to 8.

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Concept rendering of SpaceX Starship landing on the moon via Grok

Elon Musk is disputing a new NASA safety panel estimate of how many Starship launches it will take to put astronauts on the Moon, saying the real number will be less than half the panel’s figure.

On Thursday, NASA’s Aerospace Safety Advisory Panel held its quarterly public meeting. Panel member Charlie Precourt, a former NASA astronaut, flagged the fueling process for SpaceX’s lunar lander as a major risk for Artemis IV, the mission planned to land a crew on the Moon in 2028. “We need to keep our eyes on numerous required fuelings for the lander,” Precourt said, according to Ars Technica. “I think the last estimate is around 22 flights.”

Ars Technica’s Eric Berger posted the comment on X, and Musk replied. “That’s way too high,” Musk wrote. “Actual number will be more like 6 to 8.”

The disagreement comes down to a basic problem with sending a ship as large as Starship to the Moon. Starship burns nearly all of its propellant just reaching Earth orbit, so it cannot continue on to the Moon without stopping for a refill. SpaceX’s answer is a gas station in space. First, a Starship that works as a storage tank, called a depot, is launched into orbit. Then a series of tanker Starships launch one at a time, dock with the depot and pump their leftover propellant into it. Once the depot is full, the lunar lander version of Starship launches, docks, fills up and heads for the Moon.

Every tanker trip is its own full rocket launch, which is why the count matters. More launches mean more time, more cost and more chances for something to go wrong before astronauts ever leave Earth. Berger estimated that even if SpaceX reaches twice weekly Starship launches by the end of 2027, filling a depot at the panel’s number would still take roughly three months.

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How many tankers are needed depends mostly on how much propellant each one can carry to orbit and how much is lost along the way. Starship’s fuel and oxygen are stored at extremely cold temperatures, and some of it slowly boils off while waiting in orbit. More is lost in each transfer. NASA appears to be working from what Starship can lift today, while Musk’s range assumes a more capable rocket.

Musk has pushed back on higher counts before. In 2021, after a government document suggested 16 launches, he called that “extremely unlikely” and said eight tankers would be the most required.

Much of the answer depends on hardware SpaceX has not finished flying. As Teslarati noted earlier this year, the company plans to carry out the refueling process with its upgraded V3 Starship, and Precourt described Artemis IV as carrying “a large number of firsts.” He also praised NASA Administrator Jared Isaacman’s team for working to clear obstacles for both SpaceX and Blue Origin, whose Blue Moon lander does not rely on orbital refueling for its first mission.

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