SemiAnalysis: China DC fleet >24GW; ByteDance ~1/5

Opening

SemiAnalysis launched a China Datacenter Model and free preview claiming a building-level map of 1,000+ mainland facilities across 60+ operators — China fleet over 24GW by their count, second only to the U.S. 56GW 2026YE print in their global model — newsletter / product page; X. Authors Everlyn, Dylan Patel, and Patrick Schaabi say the 24GW figure excludes ~20GW of dated pipeline and ~30GW of announced projects. ByteDance, in their model, occupies roughly one-fifth of delivered national capacity and “rents nearly all of it.” Combined Alibaba/Tencent/Baidu (“BAT”) capex hit $20B in 2Q26 (>2× YoY) with all three posting negative free cash flow for the first time on their record. GDS and VNET signed 1.3GW of wholesale orders in 1H26 but, per the model, captured barely a third of ByteDance and Alibaba orders over 2024–2026YTD. State carriers still own about one-third of national capacity. The firm says China routinely delivers 100MW facilities in under 12 months. Figures are SemiAnalysis model/preview claims; the full model is paid/institutional.

The numbers

Fleet size — China >24GW tracked (ex ~20GW dated pipeline + ~30GW announced); US 56GW / APAC ex-China ~15GW / EMEA ~14GW / LatAm ~2GW at 2026YE in their framing — SemiAnalysis preview.

Coverage — 1,000+ facilities / 60+ operators; quarterly curves through 2032 — SemiAnalysis.

ByteDance — ~1/5 of delivered China capacity; nearly all leased — SemiAnalysis China Datacenter Model (as stated in preview).

BAT 2Q26 — combined capex $20B, more than doubling YoY; all three negative FCF (first time on SemiAnalysis’s stated record) — SemiAnalysis preview.

Listed colo orders — GDS+VNET 1.3GW wholesale signed 1H26; ~1/3 of ByteDance+Alibaba orders 2024–2026YTD per model — SemiAnalysis.

Delivery speed — 100MW facilities routinely under 12 months — SemiAnalysis preview.

BATB path (stated) — ~$35B 2024 → >$50B 2025 → trajectory $100B 2026 — SemiAnalysis preview.

Why it matters

Puts a bottom-up MW ledger under China AI infra that U.S. filings miss (largest tenant private; US-listed colos <15% of market on SemiAnalysis’s product-page claim) — useful for comparing China build speed/cost vs U.S. power-gated timelines, not a substitute for chip-export binding constraints the same preview flags.

Positioning

AI capex durability — A large, accelerating China BAT/ByteDance MW and capex path is consistent with global compute-bound spend; it does not speak to whether a top-four U.S. hyperscaler guides sequential capex down.

HBM supply binds — Preview explicitly flags chip/export constraints as a dark cloud alongside vacancy/price competition; facility MW ≠ accelerator shipments.

Connects to

SemiAnalysis Ep.033 ClusterMAX — Same desk’s neocloud/cluster lens; China model is the mainland supply counterpart (longform).

Alibaba Zhenwu / V900 20GW — Prior China power/AI infra color in archive (news).