Which grid emission factor should a Vietnamese supplier use?
Use the national grid emission factor published by Vietnam's environment ministry for the year your electricity was used, and cite it. Recent figures are around two thirds of a kilogram of CO2 per kWh, reflecting a grid with a large coal share, so electricity is a big part of most suppliers' footprints.
Which number for which question
- Location based Scope 2: the national grid factor for the year.
- Market based Scope 2: renewable certificates or direct power purchase contracts that meet the Scope 2 Quality Criteria.
- CBAM: for cement the electricity factor changes the cost; for steel and aluminium electricity is reported, not charged.
Keep it auditable
Record the publication, its year and the value used. Update when a new figure is published, and do not mix years in one report.
What Senseible does here
Senseible reads electricity bills and fuel invoices into a dated, fingerprinted Scope 1 and 2 record per site. Grid factors outside India must be entered from the official source for the country and year, and are labelled with that source.
Sources: GHG Protocol Scope 2 Guidance, IEA, electricity and emissions data by country, CBAM Regulation (EU) 2023/956, consolidated
Last reviewed 2026-10-21.