Musk Specced a 25-Gigawatt Data Center For 100,000 Starlink Satellites

Two days into review, a spec sheet appeared

On 18 September the FCC accepted SpaceX's application for up to 100,000 third-generation Starlink satellites for filing, opening formal review↗ ¹. Two days later, replying to the post announcing it, Elon Musk wrote that each satellite "is 250kW and will have a SpaceX-designed Nvidia Vera Rubin NVL72 computer," with connectivity "more like 10Tb in both directions" and "a path to 100+Tb" ¹. Those figures are founder-claimed and unaudited, and they describe hardware that has never flown.

Index funds must buy up to $22 billion of this roadmap

The quarterly rebalance takes effect Monday↗: SpaceX goes from about 1.28% of the Nasdaq-100 to 2.82%, starting to close an unusual gap for the index's seventh-largest company by market value, at more than $2 trillion ². Products tracking the benchmark hold over $800 billion, and estimates put the forced buying at $15.5 billion to $22 billion of SpaceX shares ^{2 3}. Passive money now owns this roadmap the same weekend it appeared.

The filing and the reply differ by a factor of ten

The application, filed 6 July↗, puts Gen3 in two very-low-Earth-orbit bands, 323 to 327.5 km and 473 to 477.5 km, a fleet separate from SpaceX's 1-million-satellite orbital data-center docket ⁴. That filing quotes 1 Tb/s of downlink per satellite↗ ⁵; Musk's weekend reply claims ten times that, in each direction ¹.

SpaceX's own S-1, filed 20 May↗, called the orbital data-center program reliant on "unproven technologies, or technologies that do not exist," with deployment "as early as 2028" ⁶, a schedule Musk has been pulling forward on X ever since ⁹. Nvidia's Vera Rubin enters production shipments this quarter for terrestrial racks; nobody has qualified it for vacuum ⁶.

The arithmetic is 25 gigawatts

At Musk's stated 250 kW per satellite, the docket's 100,000 birds add to 25 GW of onboard power, one third of the 75 GW of orbital compute JPMorgan projects SpaceX will chase by the end of 2031↗ ⁷. The 250 kW also matches the peak rating Musk gave Starmind AI1, the first data-center satellite, which ties Gen3 to the orbital compute line ⁶.

If the spec holds, the loss lands on anyone pricing terrestrial data-center power, because a rival claiming free sun, free cooling and no land bill resets what a megawatt of AI compute costs ^{6 7}. The positioning is a launch monopoly converted into compute rent, and Nvidia gains a fresh, unaudited demand class no hyperscaler order book carries yet. The counterweight is the launch-and-repair bill, the one cost orbit cannot dodge.

The repair bill is still a rocket

A Falcon 9 lifts two Gen3 satellites at a time, so the fleet needs Starship, which has yet to reach high orbits ^{5 7}. Orbits this low decay fast and need constant thruster work, which makes the constellation a standing launch bill: the repair-bill arithmetic The Inference priced into a $50 billion orbital-AI pitch deck on 10 September, now applied to the monopolist's own filing.

The sibling million-satellite docket drew roughly 1,500 objections, a petition to deny from astronomers, and Amazon's estimate that such a fleet needs about 550 replacement satellites a day ⁶. Acceptance is not approval, and SpaceX has asked the FCC's new public-interest presumption to cover the fleet ^{6 8}.

Objections, radiation tests and Monday's tape

The Gen3 docket's objection count against that 1,500, any ground qualification of Vera Rubin for radiation and heat before any 2027 first launch ⁹, and the first sessions after the rebalance takes effect Monday ². The filing asks for broadband satellites; the founder's reply prices a power plant.