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| Emissions | Unit | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|
| GHG emissions scope 1 & 2 (GRI 305-1, 305-2, 305-4, 305-5, GRI O&G 1-11.1.5, 11.1.6, 11.1.8, 11.2.3, SASB EM-EP-110a.1) | |||||
| Scope 1 & 2 absolute GHG emissions* | |||||
| Scope 1 | MtCO2e | 292 | 289 | 278 | 203 |
| Scope 2 | MtCO2e | 67 | 66 | 30 | 19 |
| Total emissions | MtCO2e | 360 | 355 | 308 | 222 |
| *Vista's GHG emissions baseline year is 2020, accounting for 416 MtCO2e absolute GHG emissions scope 1 & 2 and GHG emission intensity of 39 kgCO2e/boe scope 1 & 2. | |||||
| Scope 1 & 2 GHG Emission Intensity* | |||||
| Scope 1 | kg CO2e/boe | 19.6 | 14.7 | 14.1 | 8.1 |
| Scope 2 | kg CO2e/boe | 4.5 | 3.4 | 1.5 | 0.8 |
| Total emissions intensity | kg CO2e/boe | 24.1 | 18.1 | 15.6 | 8.8 |
| *Intensity metrics were calculated based on gross production until 2023 and are based on total production as of 2024 | |||||
| Scope 1 absolute GHG emissions by source | |||||
| Venting (process + other) | MtCO2e | 109 | 86 | 41 | 12 |
| Stationary combustion* | MtCO2e | 101 | 114 | 90 | 87 |
| Flaring | MtCO2e | 57 | 65 | 134 | 97 |
| Fugitives | MtCO2e | 25 | 25 | 11 | 7 |
| *In 2024 we estimated 3 MtCO2e from Mobile Combustion of total Stationary Combustion. | |||||
| Scope 1 GHG emission intensity by source * | |||||
| Venting* (process + other) | kg CO2e/boe | 7.3 | 4.4 | 2.1 | 0.5 |
| Stationary combustion | kg CO2e/boe | 6.8 | 5.8 | 4.6 | 3.5 |
| Flaring | kg CO2e/boe | 3.8 | 3.3 | 6.8 | 3.8 |
| Fugitives | kg CO2e/boe | 1.7 | 1.3 | 0.5 | 0.3 |
| *Intensity metrics were calculated based on gross production until 2023 and are based on total production as of 2024 | |||||
| *Venting emissions are represented by processing emissions and other emissions to air venting or processes (glycol dehydrators, pneumatic devices, storage tanks, chemical injection pumps). | |||||
| Scope 1 & 2 GHG emission by type of operation | |||||
| Conventional* | MtCO2e | 254 | 215 | 59 | 0 |
| Shale | MtCO2e | 106 | 140 | 249 | 222 |
| *For the year 2023, conventional emission corresponde to January and February emissions of conventional assets transfered to Aconcagua. | |||||
| Scope 1 & 2 GHG emission intensity by type of operation* | |||||
| *Intensity metrics were calculated based on gross production until 2023 and are based on total production as of 2024 | |||||
| Conventional* | kg CO2e/boe | 36 | 38 | 39 | 0 |
| Shale | kg CO2e/boe | 13 | 10 | 14 | 9 |
| Scope 2 GHG emissions by location | |||||
| Medanito | MtnCO2e | 14 | 16 | 3 | 0 |
| Entre Lomas + BDP + CAN | MtnCO2e | 53 | 50 | 27 | 19 |
| Scope 1 GHG direct emission by type of GHG (EM-EP-110a.1) | |||||
| CO2 direct | MtnCO2 | 150 | 170 | 213 | 177 |
| CH4 direct | MtnCH4 | 6 | 5 | 3 | 1 |
| Other direct GHG | MtN2O | 2.000 | 0.003 | 0.002 | 0.002 |
| Hydrocarbon gas flared | MMm3 | 13 | 16 | 40 | 25 |
| GHG emission related to energy | |||||
| Direct CO2 | MtCO2 | 67 | 65 | 30 | 18 |
| Direct CH4 | MtCH4 | 0 | 0 | 0 | 0 |
| Other direct GHG | MtN2O | 0 | 0 | 0 | 0 |
| Air quality - Significant air emissions (GRI 305-7, GRI O&G 11.3.2, SASB EM-EP-120a.1) | |||||
| Nitrogen oxides (NOX) | Tn | n/a | n/a | 285 | 299 |
| Sulfur oxides (SOX) | Tn | n/a | n/a | 4 | 5 |
| Volatile organic compounds (VOCs) | Tn | n/a | n/a | 4.588 | 3.972 |
| Particulate matter (PM10) | Tn | n/a | n/a | 76 | 76 |
| Carbon Monoxide (CO) | Tn | n/a | n/a | 212 | 175 |
| Hazardous air pollutants (HAPs) | Tn | n/a | n/a | n/a | n/a |
| Persistent organic pollutants (POPs) | Tn | n/a | n/a | n/a | n/a |
(1) The scope of the emissions performance indicators was limited to Vista Energy Argentina S.A.U operated assets in Argentina
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