Maritime transport CO2 emissions (experimental) in Saint Helena
Saint Helena: Maritime transport CO2 emissions was 256.75 Tonnes in 2025. ◆ Volatile
Maritime transport CO2 emissions in Saint Helena, 2019–2025
Source: Organisation for Economic Co-operation and Development. Measured in Tonnes.
Analysis
Saint Helena recorded 256.75 Tonnes for maritime transport co2 emissions in 2025. That is the lowest value across all 7 years on record.
That represents a change of down 70.7% on the previous year and down 39.0% over ten years.
Saint Helena ranks 134th of 138 countries on this measure, in the bottom quarter.
Maritime transport CO2 emissions in Saint Helena, year by year
| Year | Tonnes | Change |
|---|---|---|
| 2019 | 421.05 Tonnes | — |
| 2020 | 509.73 Tonnes | +21.1% |
| 2021 | 3,854 Tonnes | +656.0% |
| 2022 | 1,316 Tonnes | -65.8% |
| 2023 | 1,175 Tonnes | -10.8% |
| 2024 | 874.95 Tonnes | -25.5% |
| 2025 | 256.75 Tonnes | -70.7% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 421.05 Tonnes | 421.05 Tonnes | 421.05 Tonnes | 1 |
| 2020s | 1,331 Tonnes | 256.75 Tonnes | 3,854 Tonnes | 6 |
Countries ranked near Saint Helena
- 131 Cocos (Keeling) Islands 849.05 Tonnes compare
- 132 Pitcairn 279.97 Tonnes compare
- 133 South Georgia and the South Sandwich Islands 261.73 Tonnes compare
- 135 Niue 62.19 Tonnes compare
- 136 Wallis and Futuna 50.72 Tonnes compare
- 137 Isle of Man 15.29 Tonnes compare
More climate change data for Saint Helena
- Share of global CO₂ emissions and population 0.0% (2100)
- Summer temperature anomalies -0.0099 °C (2026)
- Spring temperature anomalies 0.7284 °C (2026)
- Temperature anomalies by month 0.8 °C (2026)
- Autumn temperature anomalies 0.2222 °C (2025)
- Winter temperature anomalies 0.2374 °C (2025)
- Share of global cumulative CO₂ emissions from cement 0.0% (2024)
- Share of global cumulative CO₂ emissions from flaring 0.0% (2024)
- CO₂ emissions per capita vs. fossil fuel consumption per capita 2.16 tonnes per person (2024)
- Share of global CO₂ emissions from oil 0.0% (2024)
Frequently asked questions
- What is maritime transport co2 emissions in Saint Helena?
- Maritime transport co2 emissions in Saint Helena was 256.75 Tonnes in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest maritime transport co2 emissions recorded in Saint Helena?
- The highest recorded value was 3,854 Tonnes in 2021.
- What is the lowest maritime transport co2 emissions recorded in Saint Helena?
- The lowest recorded value was 256.75 Tonnes in 2025.
- How does Saint Helena rank for maritime transport co2 emissions?
- Saint Helena ranks 134th out of 138 countries with data for 2025.
- Is maritime transport co2 emissions rising or falling in Saint Helena?
- Over the last ten years it is down 39.0%. The long-run trend across the full record is volatile.
- Where does this Saint Helena data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Maritime transport CO2 emissions (experimental). Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 7 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
This experimental dataset includes annual, quarterly, and monthly information on carbon dioxide (CO2) emissions from maritime transport based on ship-tracking information collected via Automatic Identification System (AIS) transponders, covering all large vessels (above 300 gross tonnage) around the world, accessed via the United Nations Global Platform, from 2019 onwards. The CO2 emissions are estimated by the OECD, based on a consistent methodology across countries and include emissions from both domestic and international voyages. The CO2 emissions are classified using the ship-type classification used by the International Maritime Organisation (IMO) distinguishing between 19 vessel categories such as bulk carriers, tankers, and cruise ships. The database provides a measure of CO2 emissions on a territory basis for domestic navigation, which is used for reporting in the UN Framework Convention on Climate Change (UNFCCC) inventories; and also on a residence basis, which is used to estimate the emissions of maritime transport (H50 in the International Standard Industrial Classification of All Economic Activities, or ISIC) in the SEEA Air Emission Accounts (AEAs). Seven components of these CO2 emissions measures can be selected from the ‘Vessel emissions ’ filter. In the tables, these are also shown with the letters A, B, C, D, E, F and G. The aggregate measures of CO2 emissions are calculated as: Domestic navigation = A + C International navigation (memo item) = D + G Air emissions accounts: maritime transport (ISIC H50) = A + B + D + E + F For residence based measures, the allocation of emissions to countries is based on the residence of the companies that operate the ships. More information can be found on the dataset webpage