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SpaceX ramps up Falcon 9, Falcon Heavy booster testing in Central Texas
In the latest twist in the saga of SpaceX’s McGregor, Texas testing facilities, a new Falcon 9 booster has managed to sneak past a network of unofficial observers to create a whole different kind of rocket traffic jam.
On the heels of a single day (March 19th) filled with at least five different tests of Merlin and Raptor engines and a Falcon Heavy booster, SpaceX was apparently satisfied with the results from the Heavy center core’s final major qualification test. On March 24th, the day after yet another five-test day in McGregor, SpaceX hooked up a crane to B1066 and brought the booster horizontal to prepare for transport to Cape Canaveral, Florida.
That very same day, a local resident and avid McGregor hawk spotted a new Falcon 9 booster arriving (or recently uncovered) at the test facility. Less than 24 hours later, the Falcon 9 booster was brought vertical and installed on the facility’s largest test stand for a routine qualification static fire. For McGregor, particularly after a relatively slow 12-18 months of Falcon first stage testing, having two new boosters simultaneously onsite – let alone two new boosters vertical just ~24 hours apart – is a massive change of pace.
In January 2021, some two months after arriving in Texas, the second of at least two new Falcon Heavy side boosters (B1064 and B1065) went vertical at McGregor, quickly wrapped up its static fire test campaign, and arrived at Cape Canaveral by the end of the month. Roughly a week later, Falcon Heavy Flight 4’s center core (B1066) arrived in McGregor and went vertical a few weeks after that. It’s possible that B1066 performed a static fire test that month, but the booster did unequivocally fire up on March 19th.
Days later, Falcon 9 B1067 is vertical on the same McGregor booster test stand and could potentially fire up anywhere from a few days to a few weeks from now. Combined with an October 2020 static fire of the first Falcon Heavy Flight 4 side booster static fire, all three of the massive rocket’s first stage boosters will likely be qualified and ready for flight within a week or two.
Notably, for McGregor, three new Falcon booster static fire tests in approximately three (or even four) months is a huge change of pace. Thanks almost exclusively to the success of Falcon Block 5 reusability since its 2018 debut, SpaceX booster production has consistently declined year over year, dropping to just five new booster deliveries in 2020 – the lowest production rate since 2013.
SpaceX has been ramping up Falcon fairing and expendable upper stage production to levels never seen before to achieve a record 26 launches in 2020, potentially explaining that record low. However, in 2021, McGregor appears to be on track to test and ship three new boosters in four months (or less), extrapolating to an annual cadence of nine or more booster tests.
Aside from last week’s F9 B1067 surprise, SpaceX needs to build, test, and deliver at least one more Falcon Heavy center core between now and the end of Q3 for an October launch. If SpaceX can partially maintain the throughput implied by delivering B1066 and B1067 to McGregor just seven weeks apart, it’s not infeasible that the company could manage the first uptick in Falcon booster production since 2017.
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News
SpaceX just launched a secret payload from California
SpaceX launched a classified Space Force mission from Vandenberg, revealing almost nothing about its payload.
SpaceX launched a classified Falcon 9 mission for the U.S. Space Force from Vandenberg Space Force Base on Saturday night, and the government released almost nothing about what was on board. The mission, designated USSF-366, lifted off from Space Launch Complex 4E with a window that opened at 9:52 p.m. ET and ran into the early hours of Sunday, according to SpaceX’s own mission page, which described the payload only as classified. SpaceX confirmed the launch on its X account and pointed viewers to a livestream that began roughly ten minutes before liftoff.
Watch Falcon 9 launch the USSF-366 mission from pad 4E in California https://t.co/FFEzeYOds1
— SpaceX (@SpaceX) August 16, 2026
The lack of detail did not stop analysts from filling in the blanks. Independent tracking of the rocket’s stage drop zones matched the pattern SpaceX has used on previous Starlink Group 15 missions, according to reporting from Outer Space Today, which pointed to Starshield as the likely payload rather than a one off government satellite. Starshield is SpaceX’s national security product, a version of the Starlink satellite bus built to Pentagon specifications for earth observation, communications and hosted payloads. Unlike consumer Starlink, government agencies do not have to disclose what Starshield satellites are actually doing once they reach orbit.
USSF-366 is the latest entry in a steady flow of classified and semi classified work between SpaceX and the Space Force. The company picked up a $178.5 million task order in April to launch missile tracking satellites for the Space Development Agency, as Teslarati reported at the time, and followed that in July with a $1.6 billion award covering 18 more Falcon 9 missions from Vandenberg through the end of 2027, also detailed by Teslarati. Add those contracts up and SpaceX’s Pentagon business for 2026 alone tops $8 billion.
SpaceX scores another massive Pentagon deal to support military satellites
The Falcon 9 that flew Saturday landed back near the launch site, producing the sonic booms that have become routine for residents near Vandenberg. What is less routine is how little the public will likely ever learn about what the rocket carried. SpaceX and the Space Force have not confirmed the Starshield connection, and government satellite programs built on commercial buses rarely get identified beyond a mission number and a general orbit. For a company that live streams almost everything else it does, from Starship test flights to Optimus robot demos, USSF-366 is a reminder that some of SpaceX’s busiest work now happens entirely out of public view.
On Friday, Tesla launched the Outlet Adapter that enabled Vehicle-to-Load (V2L) energy transfer, meaning owners could essentially utilize their cars as a power source for things like laptops, electric grills, or string lights.
However, even owners of some of the newest builds of the Model Y are finding out that their cars are not compatible with the new $80 accessory, stirring up a new complaint among members of the community.
Tesla launches V2L Outlet Adapter for Premium Model Y in the U.S.
Upon the release of the Outlet Adapter on Friday, I signed into my Tesla account to order the accessory. However, I was met with the dreaded “This product is not compatible with your 2026 Model Y” message at the bottom of the screen.
Some said their accounts also displayed the same message, but they ordered anyway. However, they might be surprised to find that this is no mistake; some of the newest Model Ys do not have the appropriate Power Conversion System (PCS). Mine, which was ordered on this day last year and delivered on August 31, has the old 48A, single-phase PCS.
Vehicles with the new, two-piece PCS are able to utilize V2L features on their cars:
🚨 Looks like you can hit the Parts Catalog and enter your VIN and check to see if your Model Y will be able to use the adapter for V2L.https://t.co/QA9zRk7n2k
h/t to @SawyerMerritt for finding this out.
I am sad but this isn’t a huge loss. https://t.co/AYpI12QVV9 pic.twitter.com/LRFSrtRywo
— TESLARATI (@Teslarati) August 16, 2026
Obviously, it’s disappointing. Many owners have taken delivery this year and still can not utilize the Outlet Adapter because their cars feature the old PCS:
Took delivery in February of 2026. I have the older one, so not going to work for me pic.twitter.com/RcOVq8gvvT
— Russell (@QuietTesla) August 16, 2026
It looks like if you have one of these older PCS units, you can upgrade, but the parts alone are $1,750, and that’s before Tesla adds labor for installing. It is honestly more logical to get some kind of portable power supply or power station at that point.
It is great that Tesla has enabled V2L for Model Y vehicles, but it is also unfortunate that vehicles that are less than one year old are not able to take advantage of this awesome new feature.
With that being said, it truly is a first-world problem; can you really complain when Full Self-Driving is available, maintenance is incredibly inexpensive, and the car has been so good through a year of ownership?
Tesla has launched a new Vehicle-to-Load (V2L) Outlet Adapter for Premium Model Y vehicles in the United States, meaning you can now power devices like laptops or light strings with your vehicle’s battery.
It appears the capability will be available for any Model Y Premium trim, including those that were purchased prior to the Adapter being launched. It will also only impact Juniper Model Y vehicles, so the first-gen owners will unfortunately not have access to this capability.
If your Model Y was purchased before Tesla renamed the trim levels to “Premium” and “Standard,” it does not seem to be compatible. My Model Y is technically a Premium build, as it is the Long Range All-Wheel-Drive. However, Tesla says it is not compatible with my vehicle.
🚨 Tesla has launched the Outlet Adapter for Model Y Premium in the U.S., enabling V2L capability for all Premium trims (that’s what it appears to be as it is available for purchase with all Premium trims)
It’s available for $80. 2.4kW max power and rated for 120v, 20A pic.twitter.com/lDxlVIk5s8
— TESLARATI (@Teslarati) August 14, 2026
For $80, you can now utilize your car as a portable charger for small appliances or devices. This is perfect for things like tailgates, concerts, or camping, as you can now plug in devices that you might use. Those string lights for camping? That laptop for the other games that are on at the tailgate?
They’ll both utilize energy from your Tesla’s battery to be powered. This is the first time Tesla has expanded the capability to vehicles outside of the Model Y Performance and Cybertruck. However, this feature has been highly requested by owners for an extended period of time.
Tesla launched the Outlet Adapter in China last year:
Tesla China rolls out Model Y L V2L adapter, and it’s free for early owners
You will need the Mobile Connector to operate the Outlet Adapter: the Outlet Adapter will plug into the main housing of the Mobile Connector, where the appropriate adapter to charge your vehicle will plug in.
It is rated for 120 volts and 20 amps, and has a max power rating of 2.4kW.
You can buy it here from Tesla for $80.
SpaceX just launched a secret payload from California
Tesla V2L adapter for Model Y stirs up a new complaint among owners
