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SPCX · Forward model · Terrestrial AI · Bear case

What has to happen in Terrestrial AI

Model as of

This page changes Terrestrial AI inside the complete SPCX model. Every other vertical, corporate programme and valuation assumption stays in the selected portfolio case.

SPCX forward model
Horizon
Consolidated fair value $39.25 all other verticals held in this portfolio case
Final-quarter revenue $13.41B 44% of company revenue
Explicit segment contribution −$78.90B EBITDA less segment capex, before corporate items

ARPU pressure from emerging markets and Kuiper, AI contracts slip or utilisation lags, Starship delays keep Space loss-making and constrain constellation growth. Capex stays extreme. Origin fails to pull repositories off GitHub and Cursor seats churn back to bundled Copilot as model quality converges, leaving a $60B acquisition earning editor money — the line ends 2031 below where Cursor is running today. The Model layer never gets going: Grok holds about 6% of a pool growing 3% a quarter, which is the share the argument for this line was supposed to make irrelevant.

Terrestrial AI

Basis quarter$2.56B
Final quarter$13.41B
Implied CAGR+39%
Final revenue mix44%

Ground-based compute leasing is the explosive line, and it is capacity-gated: revenue tracks energised megawatts times what is contracted times price. xAI/Grok and X advertising ride on top. The highest-variance vertical in the model - the contracts are real, the pricing power past the first tranche is not yet proven.

Last four quarters
2025 Q3 $850M Estimated
2025 Q4 $870M Estimated
2026 Q1 $744M Estimated
2026 Q2 $2.56B Reported
Compute infrastructure / cloud leasingX advertising and platform
Megawatts energised 1800 MW at the basis quarter 1,800 MW energised. Revenue is gated by what is switched on, not by demand — contracts land well ahead of power.
Megawatts added 400 MW/qtr changing +10.0% per quarter 400 MW a quarter, the rate implied by roughly $14B of quarterly capex at current build costs.
Utilisation 55% gliding toward 67% 55% of energised capacity is leased to third parties. The other 15 points run xAI, now carried in Model layer.
Revenue per MW $2.03M/qtr drifting −1.5% per quarter $2.03M per MW per quarter (~$8.1M a year), reconciling $2.56B of Q2 revenue against 1,800 MW at 70%.
Terrestrial AI

Latest: $13.41B (2031Q2E)

Period Value
2025Q1 $700M
2025Q2 $780M
2025Q3 $850M
2025Q4 $870M
2026Q1 $744M
2026Q2 $2.56B
2026Q3E $2.42B
2026Q4E $2.85B
2027Q1E $3.30B
2027Q2E $3.76B
2027Q3E $4.23B
2027Q4E $4.71B
2028Q1E $5.21B
2028Q2E $5.73B
2028Q3E $6.26B
2028Q4E $6.80B
2029Q1E $7.36B
2029Q2E $7.94B
2029Q3E $8.54B
2029Q4E $9.16B
2030Q1E $9.81B
2030Q2E $10.47B
2030Q3E $11.17B
2030Q4E $11.89B
2031Q1E $12.63B
2031Q2E $13.41B

Assumptions & reasoning

  • Modelled on energised capacity x utilisation x price because revenue here is supply-gated, not demand-gated. The contracts are signed well ahead of the power being available, so what is switched on sets the ceiling — a demand-side growth rate would be modelling the wrong constraint.
  • The build rate is the engine: 400 MW a quarter compounding at 10%. That is derived from roughly $14B of quarterly capex at current build costs, which is why capex intensity starts at an extreme 520% of segment revenue and decays as revenue catches up with the asset base.
  • Price is assumed to fall 1.5% a quarter. Every hyperscaler is building at once, so the pricing power visible in the first tranche of contracts is unlikely to survive multi-gigawatt supply. Holding price flat is the single most flattering change available in this model.
  • This is the highest-variance segment and the one that decides the answer: it goes from a third of revenue to over half, and its present value is deeply negative inside the horizon because the capex lands years before the cash. If the utilisation target is wrong, the valuation is wrong.
  • Orbital compute was previously carried here as unmodelled optionality. It is now its own vertical, so every megawatt in this line is on the ground.
  • Fifteen points of utilisation were moved to the Model layer vertical. 1,800 MW x 15% x $2.03M is $548M a quarter - the capacity Grok runs on. Internal inference is not a third-party lease, so billing it here and again as model revenue would count the same megawatt twice.
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