Deep|SPCX: xAI 8GW Buildout Mapping

Key Takeaways

• Demand-side 8GW is locked in: existing ~1.5GW + 13k GB300 racks (delivering through 2026, weighted to 2H, ≈2.5GW) + 15k Rubin racks in 2027 (≈4GW+) = ~8GW (per our channel checks). Chips, interconnects, and servers are already slotted into tier-1 OEM production schedules — there is no suspense left on the demand side.
• The existing base is pinned down by independent data: site-level power, chip mix, and tenant structure are triangulated across S-1 disclosures, Epoch AI satellite tracking, and our channel checks (see the reconciliation in Section 1.2). At ~946MW, Colossus 2 is currently the largest single-site AI data center in the world.
• Nobody on the supply side underwrites 8 GW; six independent channel sources converge on 3.5–5 GW. The gap sits at two gates — power generation (Gate 2) and environmental permitting (Gate 3); chips, transmission & distribution, and capital were each verified as non-bottlenecks.
• China’s supply chain is the only fix for the gap — and it is already in motion: the $1.465B turbine order to the Jereh × FTAI Aviation joint venture (> 1 GW, delivery by November 2027) is corroborated by public filings; transformer suppliers have confirmed “no bottleneck” in interviews.
• Regulation is the biggest uncertainty: every turbine at Colossus 1 operates without a permit; the legal endgame is binary — a workaround (fines / retroactive permitting/relocation) or a shutdown.