SpaceX Unveils AI1 Orbital Data Center Satellite, Targets 1 GW Space Compute by Late 2027

AI1 is built around a single compute module flanked by deployable solar arrays rated at 150 kW, delivering approximately 250 watts per square meter. The satellite achieves a power density of roughly 70 kW per ton — a metric SpaceX has highlighted to differentiate it from terrestrial alternatives ^[2].

The compute payload is designed to be modular and upgradable, with what SpaceX describes as interchangeable compute hardware that avoids dependence on any single chipmaker. The satellite reuses core Starlink V3 bus technologies, including solar cells and inter-satellite laser links ^[1][2].

The central engineering challenge for orbital compute is thermal management — there is no atmosphere to convect heat, so all waste energy must be radiated into space. AI1 addresses this with a 110-square-meter deployable liquid-radiator system featuring redundant pumping loops and integrated micrometeoroid protection ^[2][7].

The radiator panels are oriented in a vertical 'blade' configuration to maximize thermal radiation efficiency, with SpaceX claiming a heat rejection density of approximately 1,400 W/m². The compute hardware is mounted centrally between the radiator surfaces ^[7].

Whether this cooling architecture can sustain the thermal loads of next-generation AI accelerators at scale remains to be proven in orbit. Multiple analysts have noted that the economics of orbital compute — including launch cost per kW, thermal constraints, and latency — remain unverified at production scale ^[8].

SpaceX plans to manufacture AI1 satellites at a new mega-factory complex called Gigasat, located on approximately 1,000 acres the company owns or has under contract in Bastrop County, Texas. At full buildout, the facility could encompass up to 11 million square feet of manufacturing space ^[3][4].

The Bastrop site is designed for deep vertical integration: SpaceX intends to produce solar ingots, wafers, and cells; printed circuit boards; satellite structures; and user terminals at the same campus. A 10 GW-per-year solar cell factory is already under construction on site ^[9].

A semiconductor packaging operation at the Bastrop campus began equipment installation in April 2026 and is targeting production by end of 2026. SpaceX has separately disclosed a longer-term 'Terafab' chip fabrication plan in rural Texas, with a projected investment of approximately $55 billion ^[9].

SpaceX's disclosed roadmap calls for two prototype AI1 satellites to launch in early 2027, followed by a production ramp targeting approximately 1 GW per year of orbital AI compute capacity by late 2027. The company has outlined order-of-magnitude scaling from there — 10 GW and eventually 100 GW — though no specific timelines have been attached to those later targets ^[3][4].

The company also plans to embed compute capabilities on its existing Starlink broadband and Starlink mobile satellites prior to the AI1's debut, though the power levels on those platforms would be substantially lower than AI1's 120-150 kW range ^[1].

SpaceX's IPO prospectus references a long-term vision of up to 1 million AI satellites, though this figure represents an aspirational buildout rather than a committed deployment plan ^[10].

SpaceX's IPO priced at $135 per share with 555.6 million shares sold, attracting roughly 4x oversubscription. Retail investors submitted over $100 billion in orders but received approximately 20% of the allocation. The stock opened at $150 and reached an intraday high of $176.52 before settling at $160.95 ^[5][6].

At its closing market cap of $2.1 trillion, SPCX is valued at approximately 52x trailing sales — a premium that analysts attribute to the combined value of SpaceX's launch business (estimated at roughly $800 billion), its Starlink telecommunications franchise, and the nascent orbital compute segment ^[5][6].

The orbital data center initiative represents an entirely new infrastructure category. Whether SpaceX can deliver compute at costs competitive with terrestrial hyperscale facilities — where power runs $30-60/MWh under long-term PPAs — is the open question the market is now pricing. The company has struck recent deals to rent out terrestrial data center capacity to Anthropic and Google, but has not disclosed pricing for orbital compute ^[8].