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DayOne Chonburi Tech Park (CTP1)

Amata City Chonburi, Chonburi, Thailand · EEC (Eastern Seaboard) market · location approximate to district level

DayOne Chonburi Tech Park (CTP1) is a data center project in Amata City Chonburi, Thailand, operated by DayOne (GDS International). It is under construction. It is planned for 120 MW of IT load.

Latest change on record: entered the record as under construction on 17 March 2025.

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Stage
Under construction
Planned IT load
120 MW
Running now
Not disclosed
Operator
DayOne (GDS International)
Colocation
AI workloads
Confirmed
Evidence grade
Corroborated
Will it get built?Strong6 of 7 gates passed
✓ Land secured✓ Power arranged✓ Approvals granted✓ Money committed✓ Tenant or own use○ Builder appointed✓ Construction started

Next gate to watch: Builder appointed.

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

Thailand, 2026-09-24. Thailand asked developers on 4 September 2026 to pause 49 data centres under construction and froze 117 pending approvals while it writes new rules, due by mid October. The government has said it cannot legally enforce the pause. No list of affected projects has been published, so no Thai project has changed stage on this basis. A separate data centre electricity tariff has been created with no rate set.

How well evidenced is it

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

AI workloads

StatusConfirmed

Liquid cooling designed in campus-wide (DayOne PR, Mar 2025) and stated cloud/AI purpose; >100MW modern greenfield. No named AI tenant yet. Liquid cooling stated by w.media on 2025-03-18. Liquid cooling integration (campus-stated, type not detailed).

Access to AI chips

GradeLicence required for a party

A party to this project (its operator, that operator's group, a funder, or a confirmed client) is headquartered in China or Macau or has an ultimate parent there. US rules require a licence for advanced AI chips destined to such entities wherever they are located. This describes the rule and says nothing about whether a licence was sought, granted or refused. Criteria.

No US destination-based licence requirement as enforced · No US destination-based licence requirement as enforced (2026-09-27) source

Phases

Phase 1 · Under constructionSize not published, target 2026
Phase 2 · AnnouncedSize not published

Stage history

2025-03-17Under construction · dayonedc.com

Who is behind it

OperatorDayOne (GDS International) · Colocation
Funder, EquityGDS Holdings

Who uses the compute

Tenant · hyperscalerUndisclosed hyperscale customer (CTP anchor) · confirmed

Anchored Chonburi Tech Park with a 73MW order, later upsized to 110MW. DayOne says it entered Thailand in 2024 for this existing customer's need to diversify beyond SIJORI. · as of 2026-10-05

DayOne F-1 filed with the SEC names the anchor order at Chonburi Tech Park without naming the customer.

Source · Form F-1 Registration Statement, DayOne Data Centers Ltd (DayOne Data Centers Ltd (SEC EDGAR), 2026-10-05)

Tenant · hyperscalerUndisclosed leading U.S. hyperscale customer · confirmed

10MW order in Thailand, won after the anchor order. The customer is also a DayOne customer in two other markets. · as of 2026-10-05

DayOne F-1 describes the order in its Chonburi Tech Park section. CTP is the only Thai campus the filing names.

Source · Form F-1 Registration Statement, DayOne Data Centers Ltd (DayOne Data Centers Ltd (SEC EDGAR), 2026-10-05)

Money at this site

Announced investment, 2025-03THB 28bn (about US$831m)

The figure covers the whole campus.

Land
Land sellerAmata Corporation PCL (Amata City Chonburi Industrial Estate) · 72 rai · Nov 2024 Confirmed source ↗
Phase 1 land purchase; area per KaoHoon; Amata release also cites floating solar access
Land sellerAmata Corporation PCL · 41.3 rai · Nov 2025 Confirmed source ↗
CTP1 expansion parcel (MoU with Amata), lifts CTP1 to 300MW; CTP2 (Chonburi Tech Park Plot 2) under MoU, area not disclosed
Industrial estateAmata Corporation PCL (Chonburi Tech Park, Amata City Chonburi) · 41.3 rai · Nov 2025 Reported source ↗
Additional 41.3 rai booked at Chonburi Tech Park (CTP1), adding about 300MW of power demand. Original GDS land purchase from Amata reported November 2024 with no area given.
Power supply
Renewable power dealAmata B.Grimm Renewable Energy Company Limited (AMBRE) · 42.5 MW · 22kV · Nov 2025 Confirmed source ↗
Floating solar in Amata City Chonburi, initial capacity 42.5 MWp, COD expected 2027. · Delivered through the PEA grid under a tripartite structure with DayOne, AMBRE and PEA. Capacity is peak solar MWp. · Applies to the whole campus.
Renewable power dealProvincial Electricity Authority (PEA) · Nov 2025 Confirmed source ↗
AMBRE floating solar of 42.5MWp at 22kV delivered through the PEA grid under a tripartite DayOne, AMBRE and PEA structure, from 2027. The expansion lifts site power capacity to 300MW. · Applies to the whole campus.
Water and cooling
CoolingDirect liquid cooling Reported source ↗
Liquid cooling integration (campus-stated, type not detailed)

Sources

  1. gds-services.com
  2. amata.com
  3. pattayamail.com
  4. datacenterdynamics.com
  5. DayOne breaks ground on hyperscale data center in Chonburi, pioneering Thailand's digital future (DayOne, 2025-03-18)
  6. amata.com
  7. datacentermap.com
  8. datacenterdynamics.com
  9. dayonedc.com
  10. DayOne Launches Inaugural Tech & AI Career Expo in Thailand, Showcasing Commitment to Digital Infrastructure and Talent Development (PR Newswire (DayOne), 2026-04-25)
  11. DayOne Bangkok Data Center in Thailand | SEA Strategic Digital Crossroads (DayOne (operator page, undated, fetched 2026-09-13), 2026-09-13)
  12. ชลบุรีเนื้อหอม ดาต้าเซ็นเตอร์-ร.พ. แห่ลงทุน รับเมืองใหม่ EEC (Thansettakij, 2026-07-17)
  13. DayOne Data Centers Ltd Form F-1 (US SEC, 2026-10-05)
  14. UOB arranges THB28 billion green loan for data centre project in Thailand (Southeast Asia Infrastructure, 2026-03-12)

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