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SpaceX disclosed ~1.0 GW nameplate compute across Colossus 1 and 2 as of March…

2026-08-05 · 11:33 UTC ·@ShanuMathew93 ·2 min read

Brief

Shanu Mathew argues Elon Musk’s 10 GW by‑end‑2027 target is aspirational: disclosed and scheduled terrestrial capacity sums to only ~2.4–2.5 GW. Bridging the ~7–7.5 GW shortfall would require either an implausible number of Starship launches if orbital (700–750) or ~$280–300 billion of land‑build capex, while power, sites and supply‑chain constraints are not visibly solved for 2027.

Why it matters

SpaceX disclosed ~1.0 GW nameplate compute across Colossus 1 and 2 as of March 2026; the Q2 call raised that to 1.4 GW and Epoch shows ~1.3 GW installed. Aterio lists 1.07 GW scheduled in 2026 (Minihard 200 MW, Google lease 150 MW, Macroharder 500 MW, Colossus 2 Phase 2 220 MW), totaling ~2.4–2.5 GW and matching Elon’s >2 GW year‑end target.

Key details

  • Reaching 10 GW by end‑2027 requires ~7–7.5 GW beyond the disclosed pipeline. Orbital compute can’t realistically fill that before 2028—SpaceX’s prospectus says orbital deployment begins “as early as 2028”—and at the company’s 100 kW/metric‑ton and 100 t/Starship assumptions closing a 7–7.5 GW gap would need ~70–75k metric tons and ~700–750 Starship launches.
  • Epoch’s reported costs imply ~ $38 billion/GW (Colossus 2 $35.8B for 946 MW; Colossus 1 $12.9B for 340 MW), rounded to $40B/GW — so the missing 7–7.5 GW implies ~$280–300 billion of capex. Supply‑chain limits (TSMC/NVIDIA tying capacity to available power), site/permitting constraints, and lack of visible powered sites make rapid scale‑up unlikely without large third‑party powered shells, hyperscaler partnerships, or major acquisitions.
Source evidence

Also, think the very clear through line on his comments of "having power ahead of GPUs" and only using NVIDIA signal that TSMC and NVDA will not give capacity to folks that don't have the power yet... Too constrained across the supply chain to have hardware sitting around

See this in other parts of the value chain as well - e.g., GEV not giving you turbines unless you have the site, air permits, gas pipe, proof of delivery, etc.

Shanu Mathew (@ShanuMathew93)

Can someone help bridge me? cc: @elonmusk

How does the 10GW comment makes sense other than as an aspirational target?

SpaceX disclosed ~1GW of installed nameplate compute across Colossus 1 and 2 as of March 2026; the Q2 call puts that at 1.4GW. Epoch shows ~1.3GW currently installed, which is directionally consistent.

Aterio identifies 1.07GW of construction scheduled to activate in 2026: Minihard (200MW), Google lease (150MW), Macroharder (500MW), and Colossus 2 Phase 2 (220MW). That bridges current capacity to ~2.4–2.5GW, which lines up with Elon’s >2GW year-end target.

The Texas projects do not help in 2027 as both are only announced, with listed activation dates in June and September 2029. So 10GW by end-2027 requires another ~7.5GW of terrestrial capacity beyond the disclosed pipeline?!

Orbital cannot fill that gap absent a major change in timing. SpaceX’s own initial public offering prospectus says orbital compute deployment begins “as early as 2028.” Even if it were pulled forward, SpaceX’s stated orbital assumptions imply an extreme scale requirement: 100kW of compute per metric ton and 100 metric tons per Starship launch. Filling a 7–7.5GW gap would require 70–75k metric tons of satellite hardware and 700–750 Starship launches. The prospectus itself says its 100GW annual orbital ambition requires thousands of launches per year.

On terrestrial cost, Epoch puts Colossus 2 at $35.8bn for 946MW and Colossus 1 at $12.9bn for 340MW: both imply ~$38bn/GW. At a rounded $40bn/GW, the missing 7–7.5GW requires ~$280–300bn of gross capital that isn't contemplated right now in sellside figures?

That could ultimately be financed by SpaceX, suppliers, lenders, partners or third-party developers. But the sites, power and funding are not visible in the disclosed 2027 pipeline. The remaining possibilities are large third-party powered-shell leases, partnerships with other hyperscalers, or acquisitions of existing front-of-meter or behind-the-meter capacity, including crypto sites. Even then, most would still require data-center fit-out and execution within roughly 17 months?

Somebody help me out.

— https://nitter.net/ShanuMathew93/status/2084959719395910044#m