Thailand's Data Center Boom: THB 746 Billion Approved, and a Grid Racing to Keep Up

Thailand closed 2025 as Southeast Asia’s fastest-rising data center market: of THB 1.87 trillion in total Board of Investment approvals, THB 746 billion (~$22 billion) was data center investment, headlined by TikTok’s THB 842 billion (~$25 billion) multi-site program. The pipeline now stands at 2.87 GW. The open question for 2026-2028 is not demand — it is whether the grid can deliver megawatts to where the buildings are going up.

The scorecard

Project / investor	Commitment	Detail
TikTok (ByteDance)	THB 842B (~$25B)	Servers + data infrastructure across Bangkok, Samut Prakan, Chachoengsao
H1 2025 BOI total	THB 521.2B ($16.1B)	28 data center projects
Nov 2025 approval round	THB 100B ($3.1B)	4 projects, 376 MW combined IT load
Skyline Data Center	THB 46B	200 MW, Chachoengsao
GSA (Gulf + Singtel + AIS)	THB 13.5B	35 MW Chonburi, scaling to 90 MW; liquid-cooling-ready
Microsoft	>$1B (2026-2028)	Cloud + AI commitments around its Thai region
Google	Bangkok cloud region	Projected ~THB 1.4T ($41B) economic value over five years

Sources: w.media, Developing Telecoms, Light Reading.

Add DayOne (GDS International’s spinoff), which broke ground on its Chonburi Tech Park hyperscale campus in 2025, and AWS’s ongoing region buildout, and the cluster map is clear: Bangkok metro for connectivity, and the Chonburi–Chachoengsao corridor in the Eastern Economic Corridor (EEC) for scale. Facility-level detail is in our SEA data center catalog.

Why Thailand, why now

Three drivers converged.

Incentives with teeth. The BOI grants corporate income tax exemptions capped at 100% of investment value — eight years for “high-efficiency” facilities (judged on PUE, water-use efficiency, and local benefit), five years otherwise — plus import-duty exemption on machinery and full foreign ownership. The updated criteria also require Thai workforce and supply-chain development plans, a deliberate trade of tax years for localization.

Cost position. Cushman & Wakefield’s regional cost rankings put Thailand below Malaysia (mid-range $9.6M/MW) and far below Singapore and Japan — roughly $7-10M per MW for conventional builds. Combined with wholesale colocation rates that undercut Singapore’s $330-475/kW/month by two-thirds (see our price index), the build-and-lease arithmetic works.

A regional window. Singapore rations capacity; Malaysia restricted non-AI data center approvals in February 2026 for roughly two years. Capital that had defaulted to Johor now prices Bangkok and the EEC as the flexible alternative — Maybank called Thailand “the next data centre frontier” in exactly this context.

The constraint: 2.87 GW meets a legacy grid

Thailand does not have a generation problem — reserve margins are ample. It has a delivery problem. As RECCESSARY documents, the 2.87 GW pipeline concentrates in EEC clusters whose transmission was engineered for conventional factories, not 200 MW single-campus loads. The result is a “megawatt gap”: power exists on the system but cannot be firmed at the specific substations developers need, on the timelines their tenants demand.

The institutional response is underway. EGAT has committed multibillion-baht grid upgrades targeted at the data center corridors, and regulators are piloting direct PPAs with third-party grid access — a structural break from the single-buyer model that would let operators contract renewable generation directly, with a roughly 2,000 MW pilot frame anchoring early planning. Both moves matter more to project bankability than any headline approval number.

What to watch

• Approval-to-energization conversion. BOI approvals are intentions; the metric that matters is MW actually energized per year. Watch whether 2026-27 deliveries keep pace with the paper pipeline, or whether interconnection queues quietly stretch.
• TikTok’s phasing. THB 842 billion across three provinces will land in tranches; its pace sets the tone for the whole market’s supply-demand balance.
• Tariff politics. Data center load growth colliding with household tariffs has already generated restrictions in Malaysia. Thailand’s direct-PPA regime is partly designed to insulate consumers; its final form is a leading indicator.
• Pricing. New supply of this scale would normally soften rents. But if AI demand absorbs it — as it has everywhere else — Bangkok wholesale rates (currently well below primary-market benchmarks in our index) have room to converge upward. We track the series in stats.

Thailand’s 2025 was the year of announcements. 2026-2028 will be the years of substations.