Sustainable Performance
Environmental Performance
1) Energy and Greenhouse Gas Emission
| GRI | Energy Consumption | Unit | 2018 | 2019 | 2020 | 2021 | 2022 | Target 2022 |
|---|---|---|---|---|---|---|---|---|
| Total energy consumption | MWh | 661,376 | 688,310 | 545,363 | 457,268 | 784,905 | ||
| Renewable energy (Electricity from solar cell) | MWh | 0 | 0 | 312 | 294 | 286 | ||
| Non-renewable energy | 667,376 | 688,310 | 545,051 | 465,973 | 784,619 | 534,150 | ||
|
569,745 91,631 |
594,497 93,813 |
467,946 77,105 |
389,510 67,463 |
436,733 347,886 |
|||
| 302-3 | Energy intensity1 | kWh per passenger | 4.74 | 4.85 | 7.51 | 22.85 | 16.81 | |
| N/A | Energy expense | THB | 2,557,724,241 | 2,500,597,104 | 2,095,776,063 | 1,644,828,104 | 2,455,498,400 |
Remark:
Energy data covers six airports, excluding the Head Office. Energy data included energy consumption by third-party within airports. Energy data collection is in line with GHG Protocol Corporate Accounting and Reporting Standard, based on the energy invoice. Fuel consumption is considered negligible compared to the total energy consumption, thus, not reported here.
1 Calculated from electricity and cooling per one passenger
| GRI | Greenhouse gas emission | Unit | 2018 | 2019 | 2020 | 2021 | 2022 | Target 2022 |
|---|---|---|---|---|---|---|---|---|
| Total direct GHG emission (Scope 1) | tCO2e | 2,671.40 | 3,184.23 | 3,201.97 | 2,499.25 | 2,819.64 | 3,138.06 | |
| Suvarnabhumi Airport | tCO2e | 1,866.93 | 1,962.89 | 1,962.89 | 2,099.10 | 1,592.82 | ||
| Don Mueang International Airport | 455.48 | 500.12 | 548.78 | 521.80 | 489.32 | |||
| Chiang Ma่i International Airport | 121.75 | 134.98 | 116.22 | 129.53 | 91.83 | |||
| Hat Yai International Airport่ | 123.24 | 120.98 | 131.51 | 104.22 | 83.36 | |||
| Phuket International Airport | - | 229.45 | 298.25 | 238.04 | 146.36 | |||
| Mae Fah Luang - Chiang Rai International Airport | 104.00 | 131.31 | 126.58 | 109.28 | 95.56 | |||
| Total indirect GHG emission (Scope 2), (Market-based) | tCO2e | 209,596.50 | 214,710/81 | 171,166.09 | 178,974.37 | 224,506.94 | 167,742.77 | |
| Suvarnabhumi Airport | tCO2e | 139,780.50 | 124,866.79 | 122,371.48 | 105,585.75 | 120,912.12 | ||
| Don Mueang International Airport | 54,491.04 | 59,329.45 | 51,648.58 | 38,509.33 | 32,194.99 | |||
| Chiang Mai International Airport | 9,206.22 | 9,259.69 | 8,050.74 | 6,022.45 | 5,150.86 | |||
| Hat Yai International Airport่ | 3,659.58 | 3,732.77 | 3,559.14 | 2,845.62 | 2,504.54 | |||
| Phuket International Airport | - | 28,704.69 | 27,024.32 | 15,939.62 | 16,332.74 | |||
| Mae Fah Luang - Chiang Rai International Airport | 2,459.16 | 2,917.72 | 2,912.10 | 2,208 | 1,879.13 | |||
| Total GHG emission (Scope 1+2)1 | kgCO2e per passenger | 1.83 | 1.65 | 1.53 | 3.74 | 11.20 | ||
| Suvarnabhumi Airport | kgCO2e per passenger | 2.33 | 2.00 | 1.90 | 6.45 | 21.63 | ||
| Don Mueang International Airport | 1.43 | 1.47 | 1.26 | 2.48 | 6.46 | |||
| Chiang Mai International Airport | 0.91 | 0.85 | 0.72 | 1.27 | 2.97 | |||
| Hat Yai International Airport | 0.87 | 0.91 | 0.95 | 1.24 | 2.14 | |||
| Phuket International Airport | - | 1.59 | 1.51 | 2.98 | 9.21 | |||
| Mae Fah Luang - Chiang Rai International Airport | 1.02 | 1.06 | 1.04 | 1.53 | 2.78 |
Remark:
1 GHG Data is reported on calendar year basis, based on GHG Protocol Corporate Accounting and Reporting Standard. Only carbon dioxide is included in scope of calculation, no biogenic CO2 emission included in AOT operations. Emission factor is sourced from Thailand Greenhouse Gas Management Organization (January, 2017), U.S. Environmental Protection Agency (EPA), and Intergovernmental Panel on Climate Change (IPCC). AOT applies 100-year global warming potential, referenced from IPCC Fourth Assessment Report (AR4 - 100 year) (AR4 – 100 year) as the emission factor.
2) Water and Wastewater Management
| GRI | Water and Wastewater Management | Unit | 2018 | 2019 | 2020 | 2021 | 2022 | Target 2022 |
|---|---|---|---|---|---|---|---|---|
| Water withdrawal 1 | Thousand m3 | 10,600 | 10,481 | 8,822 | 6,218 | 6,251 | ||
| Third-party Water | Thousand m3 | 10,299 | 10,133 | 8,113 | 5,823 | 5,918 | ||
| Surface water | - | - | 343 | 85 | 0 | |||
| Ground water | 301 | 348 | 366 | 309 | 333 | |||
| Water withdrawal from water-stressed areas 2 | Thousand m3 | 8,106 | 8,041 | 6,215 | 4,510 | 4,942 | ||
| Third-party water | Thousand m3 | 7,936 | 8,041 | 6,027 | 4,414 | 4,818 | ||
| Surface water | - | - | 11 | 7 | 0 | |||
| Ground water | 170 | 189 | 176 | 90 | 124 | |||
| 303-4 | Water discharge3 | |||||||
| Surface water | Thousand m3 | 4,315 | 3,992 | 2,934 | 1,463 | 1,734 | ||
| Water discharge in water-stressed areas2 | ||||||||
| Surface water | Thousand m3 | 2,862 | 2,775 | 2,050 | 980 | 1,146 | ||
| 303-5 | Water consumption4 | Thousand m3 | 6,285 | 6,490 | 5,889 | 4,755 | 4,783 | 5,771 |
| Water consumption in water stressed areas2 | Thousand m3 | 5,244 | 5,267 | 4,165 | 3,530 | 3,796 | ||
| N/A | Recycled water5 | Thousand m3 | 401 | 496 | 554 | 441 | 406 | |
| Proportion of recycled water to external sources | % | 3.78 | 4.50 | 6.30 | 7.10 | 6.50 | ||
Remark:
Effluent data cover six airports, excluding the Head Office. The effluent data collection is based on water consumption invoices and internal water circular gauges.
1 All water withdrawal and discharge were freshwater, at ≤1,000 mg/L total dissolved solids.
2 According to World Resources Institute’s Aqueduct Water Risk Atlas, Suvarnabhumi Airport and Chiang Mai International Airport are located in extremely high water-stressed areas. The majority of water supplied by public utilities are sourced from surface water.
3 According to World Resources Institute’s Aqueduct Water Risk Atlas, Suvarnabhumi Airport and Chiang Mai International Airport are located in extremely high water-stressed areas. The majority of water supplied by public utilities are sourced from surface water.
4 Water consumption equates the difference between water withdrawal and water discharge. AOT has no significant water storage with significant impact on nearby water use.
5 Recycled water data covers Suvarnabhumi Airport, Hai Yai International Airport and Phuket International Airport. Other airports are in the process of implementation and data collection.
3) Waste
| GRI | Waste | Unit | 2018 | 2019 | 2020 | 2021 | 2022 | Target 2022 |
|---|---|---|---|---|---|---|---|---|
(2020) |
Total waste generated | kg | 31,852,556 | 35,619,591 | 26,259,579 | 17,746,486 | 18,363,142 | |
| General waste | kg | 31,706,488 | 35,454,441 | 26,116,527 | 17,491,363 | 18,254,645 | ||
| Hazardous waste | 146,068 | 165,150 | 143,053 | 255,123 | 108,497 | |||
(2020) |
Total waste diverted from disposal2 | kg | 3,055,080 | 2,762,656 | 1,599,056 | 770,013 | 354,086 | |
| General waste | kg | 3,055,080 | 2,762,656 | 1,599,056 | 770,013 | 354,086 | ||
|
- | 0 | 0 | 0 | 0 | |||
|
3,055,080 | 2,762,656 | 1,581,295 | 754,689 | 354,086 | |||
|
0 | 0 | 17,760 | 15,324 | 0 | |||
| Hazardous waste | 0 | 0 | 0 | 0 | 0 | |||
(2020) |
Total waste directed to dispoal3 | kg | 28,651,408 | 32,856,936 | 24,660,524 | 16,976,473 | 18,009,056 | 24,167,000 |
| General waste | kg | 28,651,408 | 32,850,028 | 24,517,471 | 16,721,350 | 17,900,559 | ||
|
23,187,558 | 27,650,903 | 8,492,998 | 2,115,490 | 3,129,412 | |||
|
5,463,850 | 5,199,125 | 133,803 | 100,450 | 532,130 | |||
|
0 | 0 | 13,363,550 | 14,505,410 | 14,505,410 | |||
|
0 | 0 | 2,527,121 | 2,115,490 | 9,407,864 | |||
| Hazardous waste volume | 146,068 | 165,150 | 143,053 | 255,123 | 108,497 | |||
|
146,068 | 165,150 | 133,803 | 248,552 | 248,552 | |||
|
0 | 0 | 9,250 | 6,571 | 11,901 |
Remark:
1 From 2020 onwards, waste data is based on GRI 306 (2020): Waste. Waste data in 2019 with uncategorized recovery or disposal method was assumed to use the majority’s method.
2 All waste disposal has been made outside AOT premises (Off-site).
3 Waste disposal process follows Thailand’s environmental regulation and environmental impact assessment. The waste disposal process of general waste follows regional procedures. All waste disposal processes has been done outside AOT premises (Off-site).
4 Other disposal methods for hazardous waste included incineration without energy recovery and landfill.
5 Other disposal methods for hazardous waste included incineration without energy recovery and landfill.
Last Updated: August 28, 2023