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SpaceX’s Starship Mk1 rocket already has three Raptors installed, says Elon Musk

A Teslarati artist's impression of a triple-Raptor Starship and a September 23rd photo of the spacecraft's bottom half taken by Elon Musk. (NASASpaceflight - bocachicagal, Elon Musk, Teslarati)

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In a few late-night tweets, SpaceX CEO Elon Musk offered a rare view inside the company’s Boca Chica Starship fabrication building and revealed that technicians had already installed all three Raptor engines on Starship Mk1.

SpaceX is in the midst of a frenetic few weeks of activity as technicians and engineers – some likely flown in from Florida – work around the clock to ready Starship Mk1 for its first flight tests. Musk is also scheduled to present an official update on Starship’s latest design on September 28th and likely wants to have a complete Starship (or nearly so) as an imposing backdrop for the media event.

The news that SpaceX has already installed all three Raptor engines on Starship Mk1 comes as a surprise, an exceedingly rare instance thanks to near-continuous coverage provided by several local residents and 24/7 livestreams. On September 22nd, at least one Raptor engine was spotted arriving in Boca Chica, but no onlookers noticed engine installation operations.

Capable of producing 600+ metric tons (1.3M lbf) of thrust, those three Raptors were attached to a custom-fabricated thrust structure that was installed inside Starship Mk1 on August 14th, barely a month ago. There’s a chance that one or several of the Raptors installed are nonfunctional spares, but it’s likely that the engines installed are ready for flight and have completed static fires in McGregor, Texas. As such, they could very well be the engines that will power Starship’s inaugural flight tests, the first of which will involve a suborbital launch to an altitude of more than 20 km (12.5 mi).

Musk says that Starship Mk1’s three segments could be stacked atop each other as early as Wednesday, September 25th, also implying that the spacecraft prototype’s nose section should be fully outfitted with batteries, header tanks (small propellant tanks), its own actuating fins, and more in the next 2-3 days.

Additionally, Musk published a brief video inside SpaceX’s recently-completed Boca Chica Starship fabrication building, the only semi-permanent building the company has built at its South Texas facilities. Featuring an abstract series of mirror-like steel panels that created a bit of a house-of-mirrors effect, Musk says the items pictured will be combined to form Starship Mk1 wing hinges and raceways, an external tunnel used for plumbing and cable routing.

SpaceX installed both of Starship Mk1’s aft wings/flaps over a 48 hour period, wrapping up the basic mechanical integration on September 22nd. Work has started on the prototype’s raceway and the frames of the first two wing hinge covers were spotted on Friday. As of midnight local time on September 23rd, SpaceX technicians were welding propellant feed lines to the outside of Starship’s tank section and installing the rocket’s header tanks – small secondary propellant tanks – inside its pointed nose section.

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Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

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Tesla Energy shines with substantial YoY growth in deployments

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Credit: Tesla Megapack

Tesla Energy shined in what was a weak delivery report for the first quarter, as the company’s frequently-forgotten battery storage products performed extraordinarily well.

Tesla reported its Q1 production, delivery, and deployment figures for the first quarter of the year, and while many were less-than-excited about the automotive side, the Energy division performed well with 10.4 GWh of energy storage products deployed during the first quarter.

This was a 156 percent increase year-over-year and the company’s second-best quarter in terms of energy deployments to date. Only Q4 2024 was better, as 11 GWh was recorded.

Tesla Energy is frequently forgotten and not talked about enough. The company has continued to deploy massive energy storage projects across the globe, and as it recorded 31.5 GWh of deployments last year, 2025 is already looking as if it will be a record-setting year if it continues at this pace.

Tesla Megapacks to back one of Europe’s largest energy storage sites

Although Energy performed well, many investors are privy to that of the automotive division’s performance, which is where some concern lies. Tesla had a weak quarter for deliveries, missing Wall Street estimates by a considerable margin.

There are two very likely reasons as to why this happened: the first is Tesla’s switchover to the new Model Y at its production facilities across the globe. Tesla said it lost “several weeks” of production due to the updating of manufacturing lines as it rolled out a new version of its all-electric crossover.

Secondly, Tesla could be facing some pressure from pushback against the brand, which is what many analysts will say. Despite the publicity of attacks on Tesla drivers and their vehicles, as well as the company’s showrooms, it would be safe to assume that we will have a better picture painted of what the issue is in Q2 after the company reports numbers in July.

New Tesla Model Y was a best-seller in China in March 2025

If Tesla is still struggling with lackluster delivery figures in Q2 after the Model Y is ramped and deliveries are more predictable and consistent, we could see where the argument for brand damage is legitimate. However, we are more prone to believe the Model Y, which accounts for most of Tesla’s sales, and its production ramp is likely the cause for what happened in Q1.

In what was a relatively bleak quarter, Tesla Energy still shines as the bright spot for the quarter.

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Tesla bull Wedbush responds to Q1 deliveries: ‘A disaster on every metric’

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Credit: diagnosticdennis/Instagram and @smile__no via Tesla Owners of Santa Clarita Valley/X

Tesla bull Wedbush has responded to the company’s lackluster Q1 delivery figures, which were released on Wednesday morning in a new note from analyst Dan Ives.

Tesla reported deliveries of 336,681 vehicles in the first quarter of the year, a far cry from the Wall Street estimate of 352,000 and whisper numbers of roughly 350,000. At first glance, it seems to be a disaster, but Tesla said it lost “several weeks of production” in Q1 due to the ramp of the new Model Y at all four of its vehicle production factories.

Tesla (TSLA) reports 336,681 vehicle deliveries for Q1 2025

This could be part of the reason that the company experienced a quarter of this performance, but there are also factors stemming from CEO Elon Musk’s involvement in the U.S. government, which has created some pushback in various markets.

It’s tough to say how much of each issue caused this type of quarter, but Ives wrote in a note to investors that Wedbush could not look at this “with rose-colored glasses,” as the performance “was a disaster on every metric.”

Ives believes it is time for Musk to make a move:

“The Street and us knew a bad 1Q was coming but this was even worse than expected. The time has come for Musk….it’s a fork in the road moment. The more political he gets with DOGE the more the brand suffers, there is no debate. This quarter was an example of the damage Musk is causing Tesla. This continues to be a moment of truth for Musk to navigate this brand tornado crisis moment and get onto the other side of this dark chapter for Tesla with much better days ahead.”

Interestingly, the stock dropped over 5 percent after the delivery report. It quickly rebounded 8 percent and is currently up over 5 percent on the day after a report from Politico stated that Musk and President Donald Trump have discussed the CEO stepping back from the Department of Government Efficiency (DOGE).

Based on that, it seems that investors were looking for Musk to step back from his government duties and show more public attention to Tesla. Realistically, we do not know how much of his time is being devoted to Tesla and its EV initiative. However, it seems investors were ready to hear something along the lines of Musk being more involved and speaking openly about Tesla and its projects.

It’s not all bad. Ives still recognizes Tesla’s prowess with the rollout of robotaxi and Full Self-Driving and how much impact it could have moving forward:

“Autonomous remains the biggest transformation to the auto industry in modern-day history and in our view, Tesla will own the autonomous market in the US and globally with the launch of unsupervised FSD in Austin kicking off the autonomous era at Tesla that we value at $1 trillion alone on a sum-of-the-parts valuation…”

With that being said, he also wants Musk to balance responsibilities with DOGE and Tesla:

“BUT…Musk needs to stop this political firestorm and balance being CEO of Tesla with DOGE. The future is so bright but this is a full blown crisis Tesla is navigating now and its primarily self-inflected. We remain firmly bullish on the long-term Tesla story but Musk needs to get his act together or else unfortunately darker times are ahead for Tesla.”

Tesla shares are trading at $283.01, up 5.42% at 1:57 p.m. on the East Coast.

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Tesla shares Optimus’ improved walk in new update video

The video featured an Optimus robot confidently walking in a humanlike manner.

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Credit: Elon Musk/X

During Tesla’s Q1 2025 All-Hands meeting, CEO Elon Musk stated that the company will attempt to produce its first “legion” of humanoid robots this 2025.

A recent video from Elon Musk suggests that work continues to be underway to refine the humanoid robot before it enters production.

A Better Walk

Tesla’s new Optimus update video was shared on social media platform X by CEO Elon Musk, who described the video with the words, “Accurate actuators accelerate automation.” The video featured an Optimus robot walking confidently, in a manner that is significantly more humanlike than its previous iterations.

A post from Tesla Vice President of Optimus (Tesla Bot) Milan Kovac shared more context about the new video. As per Kovac, the short clip demonstrates the humanoid robot’s latest walk, with “straight knees, smoother heel-to-toe gait, and arms sway.” Kovac also noted that the humanoid robot was “Entirely trained in simulation with RL.”

Optimus’ Quick Progress

Optimus was initially announced in 2021 during Tesla’s AI Day event. At the time, Tesla only had a static model of the humanoid robot, as well as a literal man in a suit. Fast forward to today, and Optimus has already undergone several iterations. Several of its components have also been vastly improved, such as its hands, which is expected to feature 22 degrees of freedom when it enters production.

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Tesla seems determined to start production of Optimus quickly. During the Q1 2025 All Hands meeting, CEO Elon Musk stated that the Fremont Factory had produced its first humanoid robot from its Optimus production line. Musk also noted that while Tesla is internally aiming for enough parts to produce 10,000 to 12,000 Optimus robots this year, the company could very well be capable of producing 5,000 units of the humanoid robot this 2025. 

“So this year, we hopefully will be able to make about 5,000 Optimus robots. We’re technically aiming for enough parts to make 10,000, maybe 12,000, but since it’s a totally new product with a totally new, like everything is totally new, I’ll say we’re succeeding if we get to half go the 10,000. But even 5,000 robots, that’s the size of a Roman legion, FYI,” Musk stated.

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