A greenhouse-gas (GHG) inventory is the foundation of every credible climate programme — it is the number behind your net-zero target, your CDP score, your IFRS S2 disclosure, and increasingly your customers’ supply-chain requirements. For Thai companies, building one that is GHG Protocol and TGO-aligned is now table stakes for SET ESG performance and export competitiveness.
Scope 1, 2 and 3 — what they mean
- Scope 1 — direct emissions from sources you own or control: fuel combustion, company vehicles, on-site processes.
- Scope 2 — indirect emissions from the electricity, steam, heating and cooling you purchase.
- Scope 3 — value-chain emissions: everything else, from purchased goods and business travel to the use of your products. Usually the largest share — and the hardest to measure.
Why Thai companies need a GHG inventory now
Several forces converge: the move to FTSE Russell ESG Scores in 2026 rewards quantified climate disclosure; IFRS S2 requires Scope 1, 2 and (where material) Scope 3 reporting; the Thailand Greenhouse Gas Management Organization (TGO) sets the local CFO/CFP standards; science-based targets need a verified baseline; and the EU’s CBAM is already pricing the carbon in exported goods. One robust inventory feeds all of them.
GHG Protocol and TGO alignment
A defensible inventory follows the GHG Protocol Corporate Standard for boundaries and accounting, and aligns with TGO guidance and emission factors for the Thai context. Getting both right means your numbers are accepted by international raters and by Thai regulators alike.
How to build one
- Set organisational and operational boundaries (equity share or control).
- Collect activity data — fuel, electricity, travel, purchased goods — across sites.
- Apply emission factors (TGO, IPCC, supplier-specific) to convert activity to tCO₂e.
- Screen and prioritise Scope 3 categories by relevance and size.
- Quality-check and verify, then document the methodology for audit.
Disclosing it clearly, in both languages
An inventory only earns recognition once it is reported — and for SET-listed companies that means Thai and English, consistent across the One Report, sustainability report and CDP response. Othello International pairs GHG inventory advisory with ISO 17100-certified bilingual translation, so your climate data is accurate and investor-ready in both languages. Talk to our ESG advisory team to get started.
Related ESG guides
- Double Materiality Assessment, Explained for Thai Issuers
- SET Moves to FTSE Russell ESG Scores in 2026: What SET-Listed Boards Must Do
- GRI vs SASB vs IFRS S1/S2: ESG Reporting Frameworks Explained (2026)
- 56-1 One Report Deadline 2026: Thailand Filing Dates & Bilingual Requirements
- Carbon Credits in Thailand 2026: T-VER, Premium T-VER and What Corporates Need to Know