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China Mobile’s Hohhot Data Center Expansion: What’s Built and What’s Still Projected
China Mobile’s Hohhot B25/B27 expansion was reported complete on October 12, 2026, but the projected 20,100P total capacity—including 16,700P of AI computing—is conditional on entering operation.
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- China Mobile’s Hohhot B25/B27 expansion was reported complete on October 12, 2026, but the projected 20,100P total capacity—including 16,700P of AI computing—is conditional on entering operation.
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openai.comCreate a landscape editorial hero image for this Studio Global article: What are the full details of China Mobile’s Hohhot intelligent computing center expansion reported on October 12, 2026, including its comple. Article summary: The October 12, 2026 report established that China Mobile’s Hohhot B25/B27 expansion had completed construction—not that the expanded capacity was already operational; the stated 20,100P capacity was explicitly condition. Topic tags: general, general web. Style: premium digital editorial illustration, source-backed research mood, clean composition, high detail, modern web publication hero. Use reference image context only for broad subject, composition, and topical grounding; do not copy the exact image. Avoid: logos, brand marks, copyrighted characters, real person likenesses, fake screenshots, UI text, readable text, watermarks, charts with fake numbers, clic
China Mobile’s Hohhot data center expansion has reportedly finished construction, but that does not mean its new computing capacity is already operating. The October 12, 2026 report says the B25 and B27 buildings would bring the site to a projected 20,100P after entering operation; it does not give a commissioning date. 17
What the B25/B27 project includes
The expansion is at China Mobile’s Hohhot data center in Horinger New Area, Inner Mongolia. China Construction Third Engineering Bureau built the B25 and B27 buildings. The reported contract value is RMB 2.7 billion, the building area is about 44,500 square metres, and the project’s IT power is 120 MW. 17
That 120 MW figure is reported as IT power for the project; it should not be confused with the site’s total electricity consumption. The October 12 coverage describes the project as recently completed, but does not establish the exact completion or commissioning date. 17
20,100P is a projected figure, not a commissioning update
Once the expansion enters operation, the reported capacity is 20,100P in total, including 16,700P of intelligent computing capacity. The report also says 90% of the computing capacity is intended to serve the Beijing–Tianjin–Hebei region and gives a green-electricity share of 88%. These are reported project figures, not evidence that the new buildings are already operating at full capacity. 17
Some English-language coverage renders the total as 20,100 petaflops. 2
13 The reports do not specify the numerical precision, benchmark conditions or other details needed to compare that figure directly with another system’s performance.
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Role in China Mobile’s computing network
The expansion is described as part of the national Eastern Data, Western Computing program and a core node in China Mobile’s 4+N+31+X computing-power network. Reporting also presents it as a landmark project in the national integrated computing network. 17
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The same coverage reports a connection via a 400G OTN backbone and a one-way Hohhot-to-Beijing transmission latency of 3.5 milliseconds. 17
9 That network figure alone cannot establish suitability for every latency-sensitive application: end-to-end performance also depends on factors such as processing time, round-trip delay and the service’s requirements.
The project is also described as part of the world’s largest single-site intelligent computing center operated by a telecom carrier. That is a specific scale claim—not a verified claim that it is the largest AI facility of any kind. 17
Green-power claims and what they cover
The expansion report gives an 88% green-electricity share, but does not explain the calculation period or show that the figure reflects the new buildings’ actual operating consumption. 17 Separately, a Hohhot government report says the existing center purchased 750 million kWh of green electricity in 2025 through direct supply and medium- and long-term electricity-market agreements.
22 That historical figure should not be treated as a measurement of B25/B27’s electricity use.
Xinhua has described a Huadian wind–solar–storage station supplying computing enterprises, with the Horinger computing area about 41 kilometres away. This provides regional context, but not a precise distance from the B25/B27 buildings to a particular power installation. 24
Earlier facility figures do not establish B25/B27 specifications
Reports differ on when the existing Hohhot center entered service: an IT Home report gives December 2025, while a separate facility profile gives April 28, 2024. The available material does not reconcile those dates or connect either one to commissioning of B25 and B27. 17
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Earlier coverage reports about 20,000 AI accelerator cards at the existing center. Reports also give different domestic-chip shares: above 85% in IT Home and above 89% in a June 2026 Xinhua report. Those figures are not identified as specifications for the new buildings. 17
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Cold-plate liquid cooling and a PUE as low as 1.15 are also reported for the existing Hohhot facility, not clearly as performance measurements for the completed expansion. 17 The available reporting does not verify GPU pooling or provide a B25/B27 average PUE. It also does not substantiate the separate claim about a Harbin center’s single-cluster ranking, so the two scale descriptions cannot be reliably compared here.
The clearest takeaway is the distinction between construction and operation: B25 and B27 are reported complete, while the 20,100P headline remains conditional on the expansion entering service. 17
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China Mobile’s Hohhot B25/B27 expansion was reported complete on October 12, 2026, but the projected 20,100P total capacity—including 16,700P of AI computing—is conditional on entering operation.