Environmental
Climate Change Response
Climate Change Response Activities
Greenhouse Gas (GHG) Emissions and Energy Management
| Category | Unit | 2025 | 2024 | 2023 |
|---|---|---|---|---|
| Total GHG Emissions (Consolidated) | tCO2eq | 3,984.787 | 4,114.625 | 4,001.052 |
| Scope1 | 86.189 | 78.576 | 83.033 | |
| Scope2 | 3,898.597 | 4,036.049 | 3,918.019 | |
| Total GHG Emissions (Separate) | 3,808.267 | 3,962.696 | 3,896.646 | |
| Scope1 | 61.072 | 55.204 | 60.306 | |
| Scope2 | 3,747.194 | 3,907.492 | 3,836.340 | |
| GHG Emissions Intensity (Consolidated)2) | tCO2eq/KRW 100 million | 1.489 | 1.579 | 1.673 |
| GHG Emissions Intensity (Separate) | 1.610 | 1.701 | 1.773 | |
| Total Energy Consumption (Consolidated) | TJ | 89.255 | 88.520 | 82.216 |
| Stationary Combustion (LNG, Diesel) | 0.655 | 0.597 | 0.584 | |
| Mobile Combustion (Gasoline, Diesel, Electricity) | 0.791 | 0.728 | 0.802 | |
| Electricity | 78.960 | 79.083 | 73.209 | |
| Steam | 8.819 | 8.112 | 7.622 | |
| Total Energy Consumption (Separate) | 85.742 | 85.570 | 80.236 | |
| Stationary Combustion (LNG, Diesel) | 0.655 | 0.597 | 0.584 | |
| Mobile Combustion (Gasoline, Diesel, Electricity) | 0.416 | 0.380 | 0.463 | |
| Electricity | 76.555 | 76.883 | 71.567 | |
| Steam | 8.116 | 7.710 | 7.622 | |
| Energy Consumption Intensity (Consolidated)2) | TJ/KRW 100 million | 0.033 | 0.034 | 0.034 |
| Energy Consumption Intensity (Separate) | 0.036 | 0.037 | 0.037 |
- 1) Reporting Scope: AhnLab headquarters and domestic subsidiaries (Jason, Naonworks, AhnLab Blockchain Company, and AhnLab CloudMate)
- - As AhnLab Blockchain Company is located within the AhnLab office building, its data are managed together with the headquarters' data.
- - Subsidiary data are included from the date of acquisition.
- - Scope 1 emissions from stationary combustion (LNG) and mobile combustion (gasoline and diesel) are calculated using the emission factors provided in the 2006 IPCC Guidelines.
- - Scope 1 emissions from mobile combustion (electricity) and Scope 2 electricity emissions are calculated using the Korean national electricity emission factors for 2021, 2024, and 2025.
- - Scope 2 steam emissions are calculated using the Seoul metropolitan area emission factor (Korea District Heating Corporation) or the Korean national combined heat and power emission factor (CES), depending on the steam supplier.
- - All figures are rounded to the third decimal place. As a result of rounding, the total may not equal the sum of individual figures.
- 2) For consolidated intensity calculations, revenue from overseas subsidiaries is included in revenue.
