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China's datacenter fleet tops 24GW in SemiAnalysis's building-level count
SemiAnalysis's count of more than 1,000 Chinese datacenters puts the operating fleet above 24GW, larger than EMEA or the rest of Asia. For listed landlords such as GDS and VNET, the open question moves from how big the market is to how much rent its largest tenants will pay.
The Investor · Invest desk
What happened
- Alibaba, Tencent and Baidu spent a combined $20 billion on capex in the second quarter of 2026, more than double a year earlier, and all three posted negative free cash flow for the first time on record.
- GDS and VNET, the only Chinese datacenter landlords listed in the US, signed about 1.3GW of wholesale orders in the first half of 2026 and less than 10MW of retail.
- By SemiAnalysis's count, the two listed landlords captured barely a third of ByteDance and Alibaba orders from 2024 through 2026 to date.
- Market rates for power-exclusive datacenter capacity in China have been cut in half from about $80 per kW per month.
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Why it matters
- exposure A slowdown in one private company's leasing would thin the order book of every wholesale landlord in China at the same time, GDS and VNET included.
- cost Priced at the halved market rate, the listed landlords' first-half wholesale orders would earn about $624 million a year in rent, against about $1.25 billion at the old rate.
- constraint Projects above roughly 10MW cannot legally start construction without a local energy-consumption quota, so the quota offices implementing Eastern Data, Western Compute decide where new capacity goes.
SemiAnalysis's authors wrote that "the market settled on two lazy assumptions: China is big, and China is empty." [5] Their count, published on September 25 by Everlyn, Dylan Patel and Patrick Schaabi, confirms the first [19]. At more than 24GW, China's fleet is about 43% of the 56GW the firm expects in the US by the end of 2026 [1][4][1]. If the roughly 20GW of dated pipeline left out of the count is delivered, China reaches about 44GW [3][2]. The authors trace the 15x spread in published estimates to missing disclosure: the biggest tenant files no 10-K, several of the largest landlords have never listed, and most primary sources are in Chinese [6].
Whether the second assumption holds depends on which halls are counted. The report says China built its datacenter industry retail-first, and that this history produced overbuild and high vacancy alongside a shortage of AI capacity [14]. The listed landlords' first-half order book was almost entirely wholesale, which fits that split [21]. SemiAnalysis says high vacancy, and chip supply held back by export restrictions, have not stopped AI datacenters from being built and filled [13]. The tenants are spending more on the build than their businesses currently generate in cash [7].
The cost shows up in rent. At the halved market rate of about $40 per kW per month [3], a megawatt of power-exclusive capacity rents for about $480,000 a year, against about $960,000 before the cut [4]. The report does not give contract prices for GDS or VNET. According to the report, GDS management estimated on its August 2026 earnings call that the price reset needs another 18 months to fully digest [12].
SemiAnalysis's estimate of ByteDance's fifth works out to roughly 4.8GW, if delivered capacity is taken to be the 24GW fleet [6]. ByteDance rents nearly all of it, so landlords own those buildings and carry the vacancy risk [8]. The tenant-by-tenant analysis behind the estimate is paywalled [18]. About two-thirds of ByteDance and Alibaba orders since 2024 went to landlords other than GDS and VNET [7], in a market where the state-owned carriers still own a third of national capacity [16]. A pivotnews.ai summary of the report called ByteDance's tender calendar "the order book for every wholesale operator in the country." [22]
I think the "empty" shortcut is wrong about AI wholesale demand and right about price, and that the landlords' main risk is one private tenant's tenders. The case against is in the same report: high vacancy and heavy price competition among developers [13] are what an overbuilt market looks like, and halved rents fit that picture. The view goes wrong if ByteDance slows its tenders, or if export restrictions leave AI halls unfilled. The clearest sign of that would be GDS and VNET wholesale signings falling well short of their first-half pace while vacancy stays high.
What to watch
- Whether power-exclusive rates begin to recover on the timetable GDS management gave for digesting the price reset.
- Whether Alibaba, Tencent and Baidu keep capex at second-quarter levels with free cash flow negative, or one of them cuts first.
- Overseas leasing by Chinese hyperscalers, which SemiAnalysis expects to double from 2026 to 2029 toward about 4GW; faster growth abroad would put less of their demand on domestic landlords.