Eastern Economic Corridor: Investment Anchor and 2027 Pipeline
EEC covers Chonburi, Rayong, Chachoengsao provinces. EEC concentration of 2025 BOI data-centre approvals: Rayong 33%, Chonburi 32%. Beijing Haoyang Cloud THB 72.7B / 300 MW Rayong campus largest single approval. Industrial-estate operators WHA, Amata host major tenants. Anchored by Map Ta Phut, Laem Chabang Port, U-Tapao airport.
Key takeaways
- 1
EEC covers Chonburi, Rayong, Chachoengsao provinces β Thailand's flagship investment-promotion zone.
- 2
BOI FY2025 approvals reached across 2,779 projects (+ YoY); the Eastern region absorbed β ~ of FY2025 BOI value.
- 3
Data centre alone drew of FY2025 BOI value β the single largest industry; 1H25 data-centre BOI investment across 28 projects.
- 4
2025 BOI data-centre approvals concentration: Rayong , Chonburi , Chachoengsao ~ per TNGlobal β combined ~ of national data-centre flow.
- 5
Beijing Haoyang Cloud / 300 MW campus at WHA Eastern Seaboard 4 in Rayong is the largest single approval.
- 6
Industrial-estate operators: WHA Corporation (WHA Eastern Seaboard 1-4), Amata Corporation (Amata City Chonburi, Amata City Rayong) host major tenants.
- 7
Petrochemical anchor: PTT Group at Map Ta Phut Industrial Estate; Laem Chabang Port is Thailand's deepest-water container gateway.
- 8
BOI updated FY2025 data-centre incentives: 8-year CIT exemption for high-efficiency data centres, 5 years for others; FastPass approval-acceleration system covers BOI and EEC Office.
Questions this report answers
What is the EEC and what does it cover? Per BOI 2025 Investment Promotion Guide: the Eastern Economic Corridor (EEC) covers Chonburi, Rayong, and Chachoengsao provinces β Thailand's flagship investment-promotion zone established to drive high-value industries (data centre, automotive, electronics, petrochemical, MICE). EEC investment-promotion incentives include extended CIT exemptions, land-ownership exemptions for foreign companies, and merit-based add-ons for targeted-industry projects under BOI's S-Curve and BCG (bio-circular-green) frameworks.[]
Where does EEC sit in 2025-2026 BOI flow? Per TNGlobal and Light Reading: the EEC concentration of 2025 BOI data-centre approvals was Rayong , Chonburi , Chachoengsao ~ β combined approximately of the data-centre flow into the EEC corridor. Beijing Haoyang Cloud's / 300 MW campus at WHA Eastern Seaboard 4 in Rayong is the largest single approval. EEC's FDI concentration extends beyond data centres: automotive (Toyota, Honda, Mitsubishi at Rayong and Chachoengsao), petrochemical (PTT at Map Ta Phut), and electronics manufacturing.[, , ]
Who are the industrial-estate operators? WHA Corporation operates WHA Eastern Seaboard 1-4 industrial estates across Rayong; key tenants include Beijing Haoyang Cloud's 300 MW data-centre. Amata Corporation operates Amata City Chonburi and Amata City Rayong with extensive automotive-and-electronics tenant base. Map Ta Phut Industrial Estate (Rayong) is the major petrochemical-concentration estate anchored by PTT Group operations. Laem Chabang Port (Chonburi) is Thailand's deepest-water container port and the EEC's primary export-import gateway.[]
What's the infrastructure pipeline? Two major EEC anchors: (1) U-Tapao-Rayong-Pattaya International Airport expansion, providing direct international connectivity for cargo and passengers without Bangkok-via-Suvarnabhumi routing; (2) Bangkok-Pattaya high-speed rail with under-one-hour journey time, structurally tying the EEC corridor to Bangkok's commuter and tourism economy. Both projects are EEC-funded and central to long-term economic transformation. Per Pattaya Mail Mayor coverage: the EEC framework integrates Pattaya tourism, Rayong industrial, and Chonburi-spanning logistics into a coordinated regional growth model.[]
Executive summary
The EEC is Thailand's flagship investment-promotion zone covering Chonburi, Rayong, and Chachoengsao provinces. EEC concentration of 2025 BOI data-centre approvals: Rayong , Chonburi , Chachoengsao ~ per TNGlobal β combined approximately of the data-centre flow. Beijing Haoyang Cloud's / 300 MW Rayong campus at WHA Eastern Seaboard 4 is the largest single approval, illustrative of the EEC's structural FDI-attraction role.[, ]
Industrial-estate operators WHA Corporation and Amata Corporation host the major EEC tenants. PTT Group anchors the petrochemical sector at Map Ta Phut Industrial Estate in Rayong. Laem Chabang Port is Thailand's deepest-water container gateway. Infrastructure anchors: U-Tapao-Rayong-Pattaya airport expansion, Bangkok-Pattaya high-speed rail (under-1-hour journey), and deep-sea ports connecting EEC industrial output to global markets.[]
EEC tax-incentive framework supports targeted-industry FDI under BOI's S-Curve and BCG frameworks per the BOI 2025 Investment Promotion Guide. The structural-investor thesis: EEC concentration of 2025-2027 BOI approvals (data centre, automotive, electronics, petrochemical) creates compounding industrial-estate-and-infrastructure demand. For SET-listed industrial-estate operators (WHA, Amata) and infrastructure operators (PTT, BTS Group, BEM): structural EEC tailwind. For institutional investors: 2026-2028 thematic EEC exposure via WHA, Amata, and EEC-listed-tenant equity.[, ]
EEC concentration metrics
EEC provinces
Value
3
Notes
Chonburi, Rayong, Chachoengsao.
Rayong 2025 BOI data-centre share
Value
Notes
Per TNGlobal.
Chonburi 2025 BOI data-centre share
Value
Notes
Per TNGlobal.
Beijing Haoyang Cloud Rayong campus
Value
$2.11B / 300 MW
Notes
WHA Eastern Seaboard 4; largest single approval.
Industrial-estate operators
Notes
WHA Eastern Seaboard 1-4, Amata City Chonburi/Rayong.
Petrochemical anchor
Notes
Rayong; PTT Group operations.
Container gateway
Value
Laem Chabang Port
Notes
Thailand's deepest-water port.
| Metric | Value | Notes |
|---|---|---|
| EEC provinces | 3 | Chonburi, Rayong, Chachoengsao. |
| Rayong 2025 BOI data-centre share | 33% | Per TNGlobal. |
| Chonburi 2025 BOI data-centre share | 32% | Per TNGlobal. |
| Beijing Haoyang Cloud Rayong campus | $2.11B / 300 MW | WHA Eastern Seaboard 4; largest single approval. |
| Industrial-estate operators | WHA, Amata | WHA Eastern Seaboard 1-4, Amata City Chonburi/Rayong. |
| Petrochemical anchor | Map Ta Phut Industrial Estate | Rayong; PTT Group operations. |
| Container gateway | Laem Chabang Port | Thailand's deepest-water port. |
BOI FY2025 approval flow (THB billions)
1H24
BOI approval value (THB B)
458
Notes
Reference baseline; pre-FastPass momentum
2H24
BOI approval value (THB B)
740
Notes
BOI 2024 USD 33B applications surge per PR Newswire BOI
1H25
BOI approval value (THB B)
1,109
Notes
Eastern region absorbs 59% of FY2025 BOI total per Nation Thailand
FY2025 total
BOI approval value (THB B)
1,876
Notes
BOI FY2025 total approvals $54.4B (+36% YoY); 2,779 projects
of which data centre
BOI approval value (THB B)
746
Notes
Single largest industry; high-efficiency 8-year CIT exemption
| Period | BOI approval value (THB B) | Notes |
|---|---|---|
| 1H24 | 458 | Reference baseline; pre-FastPass momentum |
| 2H24 | 740 | BOI 2024 USD 33B applications surge per PR Newswire BOI |
| 1H25 | 1,109 | Eastern region absorbs 59% of FY2025 BOI total per Nation Thailand |
| FY2025 total | 1,876 | BOI FY2025 total approvals $54.4B (+36% YoY); 2,779 projects |
| of which data centre | 746 | Single largest industry; high-efficiency 8-year CIT exemption |
FY2025 BOI data-centre approvals by province (~THB 746B total)
Rayong (EEC)
Share of data-centre BOI %
Anchor projects
Beijing Haoyang Cloud 300 MW at WHA Eastern Seaboard 4; multiple hyperscaler anchor sites
Chonburi (EEC)
Share of data-centre BOI %
Anchor projects
Amata City Chonburi tenants; Laem Chabang adjacency
Chachoengsao (EEC)
Other (Bangkok, Samut Prakan)
Share of data-centre BOI %
Anchor projects
Bangkok metro edge-DC, Samut Prakan logistics-DC
| Province | Share of data-centre BOI % | Anchor projects |
|---|---|---|
| Rayong (EEC) | 33% | Beijing Haoyang Cloud 300 MW at WHA Eastern Seaboard 4; multiple hyperscaler anchor sites |
| Chonburi (EEC) | 32% | Amata City Chonburi tenants; Laem Chabang adjacency |
| Chachoengsao (EEC) | ~12% | Cluster expansion at Hemaraj 304 Industrial Park, edge of EEC |
| Other (Bangkok, Samut Prakan) | ~23% | Bangkok metro edge-DC, Samut Prakan logistics-DC |
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