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SpaceX Falcon 9 rocket launches heaviest payload yet

For the third time in less than a year, SpaceX has launched its heaviest payload yet. (Richard Angle)

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SpaceX has launched its heaviest payload yet for the third time in ten months, demonstrating that it’s still finding ways to improve the performance of its mature Falcon rockets.

At 9:30 am EST, January 25th, SpaceX completed a static fire of the two-stage Falcon 9 rocket assigned to launch its next Starlink mission. Half an hour later, SpaceX confirmed that the rocket performed well and is scheduled to launch no earlier than 4:32 am EST (09:32 UTC) on Thursday, January 26th. SpaceX didn’t state the mission’s purpose, but shorthand (“sl5-2”) used in an official website URL implied that it would be the second launch for its Starlink Gen2 satellite constellation.

Flying for the ninth time, Falcon 9 booster B1067 lifted off on schedule and sent an expendable Falcon upper stage and Starlink 5-2’s 56-satellite payload on their way to space. B1067 safely touched down on a SpaceX drone ship soon after, setting it up to reach double digits later this year. The bus-sized stack of satellites was deployed in orbit soon after, completing SpaceX’s 176th consecutively successful launch since January 2017.

Eleven Teslas to orbit

56 is not an unprecedented number of satellites for a SpaceX launch or a Starlink launch. SpaceX has launched a record 143 rideshare payloads at once, and the company routinely launched 60 Starlink satellites at a time throughout 2019, 2020, and half of 2021. But those Starlink satellites were the first versions (V0.9-V1.0) of the spacecraft and weighed either 227 or 260 kilograms (500/570 lbs) apiece.

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In the second half of 2021, SpaceX began launching new Starlink V1.5 satellites. Outfitted with laser links (optical terminals) and other miscellaneous upgrades, the new satellites weigh either 303, 307, or 309 kilograms (668, 676, or 681 lb) each. The heavier design forced SpaceX to slightly reduce the number of satellites each launch could carry. After some optimization, SpaceX regularly launches up to 54 Starlink V1.5 satellites per rocket, down from 60 V1.0 satellites.

The number of satellites may be smaller, but the mass of the payload launched has never been higher. SpaceX last broke Falcon 9’s payload mass record in August 2022, when it launched 54 Starlink V1.5 satellites for the first time. The payload reportedly weighed 16.7 tons (~36,800 lb), breaking the previous record of 16.25 tons by about 3%. The heaviest 60-satellite Starlink V1.0 payload weighed ~15.6 tons (~34,400 lb).

Stacks of Starlink V1.0 and V1.5 satellites. (SpaceX)

Now, Falcon 9 has launched 56 Starlink V1.5 satellites at once. SpaceX says the payload weighed 17.4 tons (~38,400 lb), crushing the company’s previous record of 16.7 tons. 17.4 tons is just shy of the weight of 11 Tesla Model 3s.

Starlink 5-2 targeted the same orbit as Starlink 5-1, which carried 54 satellites, indicating that SpaceX has likely made another iterative improvement to Falcon 9 performance. As SpaceX has gained confidence in and experience with Falcon 9, it’s been able to tweak the timing of certain launch events, raise performance limits, and reduce margins throughout the rocket. Starlink 5-2’s record payload means that SpaceX’s tweaks have collectively boosted Falcon 9’s performance by 11.5% (15.6 to 17.4 tons) in just a few years.

Gen1, V1.0, V1.5, Gen2, V2.0

Starlink 5-2 continues a trend of confusion begun by the company’s first Starlink Gen2 launch, which it deemed Starlink 5-1. The naming scheme implied that the satellites were a continuation of the company’s first constellation, Starlink Gen1, but SpaceX confirmed that they were the first Starlink Gen2 satellites. That SpaceX is launching 54 (and now 56) satellites also confirms that they are likely the same V1.5 satellites the company has been launching for 18 months.

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SpaceX CEO Elon Musk has outright stated that the company could go bankrupt if it couldn’t begin launching much larger Starlink V2.0 satellites on its Starship rocket in the near future. Instead, SpaceX is doing the exact opposite and is populating its Starlink Gen2 constellation with Gen1-sized satellites. It’s unclear when SpaceX will begin launching the larger Starlink V2.0 satellites that were meant to be the mainstay of the Gen2 constellation.

Rewatch SpaceX’s second Starlink Gen2 launch below.

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 exec: Preparations underway but no firm timeline yet for FSD rollout in China

The information was related by Tesla China Vice President Grace Tao in a comment to local media.

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Credit: Grok Imagine

Tesla has not set a specific launch date for Full Self-Driving in China, despite the company’s ongoing preparations for a local FSD rollout. 

The information was related by Tesla China Vice President Grace Tao in a comment to local media.

Tesla China prepares FSD infrastructure

Speaking in a recent media interview, the executive confirmed that Tesla has established a local training center in China to support the full adaptation of FSD to domestic driving conditions, as noted in a report from Sina News. However, she also noted that the company does not have a specific date when FSD will officially roll out in China.

“We have set up a local training center in China specifically to handle this adaptation,” Tao said. “Once officially released, it will demonstrate a level of performance that is no less than, and may even surpass, that of local drivers.”

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Tao also emphasized the rapid accumulation of data by Tesla’s FSD system, with the executive highlighting that Full Self-Driving has now accumulated more than 7.5 billion miles of real-world driving data worldwide.

Possible 2026 rollout

The Tesla executive’s comments come amidst Elon Musk’s previous comments suggesting that regulatory approval in China could arrive sometime this 2026. During Tesla’s annual shareholder meeting in November 2025, Musk clarified that FSD had only received “partial approval” in China, though full authorization could potentially arrive around February or March 2026.

Musk reiterated that timeline at the World Economic Forum in Davos, when he stated that FSD approval in China could come as early as February.

Tesla’s latest FSD software, version 14, is already being tested in more advanced deployments in the United States. The company has also started the rollout of its fully unsupervised Robotaxis in Austin, Texas, which no longer feature safety monitors.

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Tesla Semi lines up for $165M in California incentives ahead of mass production

The update was initially reported by The Los Angeles Times.

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Credit: @HinrichsZane/X

Tesla is reportedly positioned to receive roughly $165 million in California clean-truck incentives for its Semi.

The update was initially reported by The Los Angeles Times.

As per the Times, the Tesla Semi’s funding will come from California’s Hybrid and Zero-Emission Truck and Bus Incentive Project (HVIP), which was designed to accelerate the adoption of cleaner medium- and heavy-duty vehicles. Since its launch in 2009, the HVIP has distributed more than $1.6 billion to support zero-emission trucks and buses across the state.

In recent funding rounds, nearly 1,000 HVIP vouchers were provisionally reserved for the Tesla Semi, giving Tesla a far larger share of available funding than any other automaker. An analysis by the Times found that even after revisions to public data, Tesla still accounts for about $165 million in incentives. The next-largest recipient, Canadian bus manufacturer New Flyer, received roughly $68 million.

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This is quite unsurprising, however, considering that the Tesla Semi does not have a lot of competition in the zero-emissions trucking segment.

To qualify for HVIP funding, vehicles must be approved by the California Air Resources Board and listed in the program catalog, as noted in an electrive report. When the Tesla Semi voucher applications were submitted, public certification records only showed eligibility for the 2024 model year, with later model years not yet listed.

State officials have stated that certification details often involve confidential business information and that funding will only be paid once vehicles are fully approved and delivered. Still, the first-come, first-served nature of HVIP means large voucher reservations can effectively crowd out competing electric trucks. Incentive amounts for the Semi reportedly ranged from about $84,000 to as much as $351,000 per vehicle after data adjustments. 

Unveiled in 2017, the Tesla Semi has seen limited deliveries so far, though CEO Elon Musk has recently reiterated that the Class 8 all-electric truck will enter mass production this year.

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Tesla reveals major info about the Semi as it heads toward ‘mass production’

Some information, like trim levels and their specs were not revealed by Tesla, but now that the Semi is headed toward mass production this year, the company finally revealed those specifics.

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Credit: Tesla

Tesla has revealed some major information about the all-electric Semi as it heads toward “mass production,” according to CEO Elon Musk.

The Semi has been working toward a wider production phase after several years of development, pilot programs, and the construction of a dedicated production facility that is specifically catered to the manufacturing of the vehicle.

However, some information, like trim levels and their specs were not revealed by Tesla, but now that the Semi is headed toward mass production this year, the company finally revealed those specifics.

Tesla Semi undergoes major redesign as dedicated factory preps for deliveries

Tesla plans to build a Standard Range and Long Range Trim level of the Semi, and while the range is noted in the company’s newly-released spec list, there is no indication of what battery size will be equipped by them. However, there is a notable weight difference between the two of roughly 3,000 lbs, and the Long Range configuration has a lightning-fast peak charging speed of 1.2 MW.

This information is not available for the Standard Range quite yet.

The spec list is as follows:

  • Standard Range:
    • 325 miles of range (at 82,000 lbs gross combination weight
    • Curb Weight: <20,000
    •  Energy Consumption: 1.7 kWh per mile
    • Powertrain: 3 independent motors on rear axles
    • Charging: Up to 60% of range in 30 minutes
    • Charge Type: MCS 3.2
    • Drive Power: Up to 800 kW
    • ePTO (Electric Power Take Off): Up to 25 kW
  • Long Range:
    • Range: 500 miles (at 82,000 lbs gross combination weight)
    • Curb Weight: 23,000 lbs
    • Energy Consumption: 1.7 kWh per mile
    • Powertrain: 3 independent motors on rear axles
    • Charging: Up to 60% of range in 30 minutes
    • Charge Type: MCS 3.2
    • Peak charging speed: 1.2MW (1,200kW)
    • Drive Power: Up to 800 kW
    • ePTO (Electric Power Take Off): Up to 25 kW

It is important to keep in mind that the Semi is currently spec’d for local runs, and Tesla has not yet released or developed a sleeper cabin that would be more suitable for longer trips, cross-country hauls, and overnight travel.

Tesla Semi sleeper section and large side storage teased in new video

Instead, the vehicle will be initially used for regional deliveries, as it has in the pilot programs for Pepsi Co. and Frito-Lay for the past several years.

It will enter mass production this year, Musk confirmed on X over the weekend.

Now that the company’s dedicated Semi production facility in Sparks, Nevada, is standing, the timeline seems much more realistic as the vehicle has had its mass manufacturing date adjusted on several occasions.

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