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DayOne Singapore (21 Jalan Buroh) data center

Singapore, Singapore · Singapore market

DayOne Singapore (21 Jalan Buroh) is a data center project in Singapore, operated by DayOne (ex-GDS International). It is under construction. It is planned for 20 MW of IT load.

Latest change on record: entered the record as under construction on 25 July 2025.

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Stage
Under construction
Planned IT load
20 MW
Running now
Not disclosed
Operator
DayOne (ex-GDS International)
Colocation
AI workloads
Confirmed
Evidence grade
Corroborated
Will it get built?Leaning yes5 of 7 gates passed
✓ Land secured✓ Power arranged✓ Approvals granted✓ Money committed○ Tenant or own use○ Builder appointed✓ Construction started

Next gate to watch: Tenant or own use.

Your call. Will it be built?

Build odds is ArusGrid's reading of the public record, not a forecast, a rating or advice. It counts the gates this project has passed in public sources. Private progress does not show, a passed gate can be undone, and projects that pass every gate still stop. The method has not yet been tested against outcomes. How it works.

How Singapore approves, powers and taxes data centers is on Data center rules in Singapore.

How well evidenced is it

Construction or financing is evidenced, or several independent signals agree. On record: named funder, committed or approved capital, dated, sized phase, three or more sources, dated source in the last 24 months. Criteria.

AI workloads

StatusConfirmed

hybrid air+liquid cooling

Access to AI chips

GradeNo US licence required

This country carries no US destination-based licence requirement for advanced AI chips as the rules are enforced today. Access is a commercial matter between the project and its vendors. Criteria.

Phases

Phase 1 · Under construction20 MW, target 2026

Stage history

2025-07-25Under construction · dayonedc.com

Who is behind it

OperatorDayOne (ex-GDS International) · Colocation
Funder, EquitySoftBank Vision Fund
Funder, EquityHillhouse Investment

Who uses the compute

No tenant disclosed. Most colocation leases are confidential, so this says nothing about occupancy. Not yet checked against second-order sources.

Money at this site

Announced investment, 2024-01S$112.8m (about US$84m)

The figure covers land only.

Platform deals that include it

DayOne Series C
Platform capital, 2026-06-05US$4.5bn

Platform capital spans several sites. It is never added to this project's own figure.

Land
Land sellerCapitaLand Ascendas REIT · S$112.8m · leasehold · Oct 2024 Confirmed source ↗
Remaining land lease of about 31 years at divestment. Buyer was GDS IDC Services Pte. Ltd. Existing building was a three-storey ramp-up warehouse with a seven-storey office block, GFA 39,978 sqm. Completion expected in Q4 2024.
Land sellerCapitaLand Ascendas REIT (HSBC Institutional Trust Services (Singapore) Limited as trustee) · S$112.8m · leasehold · Oct 2024 Confirmed source ↗
Sale and purchase agreement signed 11 Oct 2024 with GDS IDC Services Pte. Ltd. (now DayOne). Remaining land lease about 31 years at that date. Existing building was a three-storey ramp-up warehouse with a seven-storey office block, 39,978 sqm GFA. Land area not stated. Completion expected in Q4 2024.
Power supply
Renewable power dealSembcorp · Jul 2025 Confirmed source ↗
10-year PPA backed by renewable energy certificates sourced locally or imported through grid-to-grid links.
Own generationOn-site solid oxide fuel cell (DayOne proof of concept) · 0.3 MW · Jul 2025 Reported source ↗
Pilot toward hydrogen-based power. · Hydrogen Central gives the SOFC output as 0.3MW. DCD and EDB confirm the SOFC pilot but give no size. DayOne's 2023 SOFC trial with SK ecoplant (Bloom Energy technology, natural gas feedstock) names only an upcoming Singapore data centre, so that link to this site is not confirmed.
On-site solarDayOne (on site) · Aug 2026 Reported source ↗
Vertical building-integrated photovoltaics on the building. No capacity given.
Water and cooling
CoolingHybrid air and liquid cooling Reported source ↗
Hybrid air and liquid cooling, with support for high-density air-cooled GPUs.

Sources

  1. datacenterdynamics.com
  2. edb.gov.sg
  3. dayonedc.com
  4. DayOne Singapore (DayOne)
  5. Singapore's DayOne breaks ground on first data center in Singapore (DayOne, 2025-07-25)
  6. CapitaLand Ascendas REIT to divest 21 Jalan Buroh in Singapore at a premium to valuation (CapitaLand Ascendas REIT (SGX filing), 2024-10-11)
  7. CapitaLand Ascendas REIT to divest 21 Jalan Buroh in Singapore at a premium to valuation (CapitaLand Ascendas REIT, 2024-10-11)
  8. DayOne starts AI-ready, 20MW green data centre build in Singapore (DataCenterNews Asia, 2025-07-30)
  9. DayOne breaks ground on green AI data centre in Singapore – 20MW site will trial Solid Oxide Fuel Cell (SOFC) hydrogen power (Hydrogen Central, 2025-07-29)
  10. DayOne secures US$ 415 million green loan from DBS, OCBC & UOB (W.Media, 2026-08-18)
  11. DayOne hydrogen-powered AI data centre takes shape in Singapore (Techgoondu, 2025-07-28)

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