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Green tree canopy seen from below
Appendix

Historical Emissions Data

Climate Metrics & Targets

Our climate strategy is guided by metrics and targets that help to drive and serve as key indicators of our progress.

GHG EMISSIONS INVENTORY

We assess our impact and progress primarily through ongoing evaluation of our direct and indirect greenhouse gas (GHG) emissions.

For more information, see Fuel Efficiency

Fuel Efficiency

GHG Emissions Inventory (metric tons CO2e)1, 2

Scope 1
2019 (baseline) 2021 2022 2023
Jet Fuel – Mainline Delta 34 967 854 22 647 716 28 905 698 34 078 477
Carburant durable d'aviation 93 203
Jet Fuel – Wholly-Owned Subsidiaries 2 181 283 1 745 400 1 668 437 1 616 701
Ground operations (ground service equipment (GSE) fuel use) 97 316 76 586 79 417 86 106
Ground operations (non-GSE fuel use) 81 968 91 554 87 355 110 355
TOTAL SCOPE 1 37 328 421 24 561 256 30 741 000 35 891 842
Scope 2
2019 (baseline) 2021 2022 2023
Electricity – Direct Billed facilities 152 849 113 738 126 653 107 920
Electricity – Leased facilities 105 701 94 574 41 776 46 550
Natural Gas – Leased facilities 37 339 37 907 35 057 33 917
TOTAL SCOPE 2 295 889 246 219 203 486 188 387
Scope 33
2019 (baseline) 2021 2022 2023
Category 1 (Purchased Goods and Services) 1 514 455 1 664 146
Category 2 (Capital Goods) 1 395 376 1 565 215
Category 3 (Fuel4) 10 946 766 7 289 033 8 450 703 7 882 984
Category 4 (Upstream Transport) 938 765 690 054
Category 6 (Business Travel) 91 472
Category 7 (Employee Commute) 135 373
Category 15 (Investments) 5 162 982
TOTAL SCOPE 3 10 946 766 7 289 033 12 299 299 17 192 226
SUM OF EMISSIONS 48 571 076 32 096 508 43 243 785 53 272 455
  1. All emissions were calculated and verified using the GHG Protocol, which is in alignment with the guidance of the Science Based Targets initiative (SBTi).
  2. Previous ESG reports included Delta’s “CO2 only” emissions to provide an equivalent comparison against Delta’s offset purchases. As of 31 mars 2022, we concluded our offsetting program, therefore eliminating the need to report both CO2 only and CO2e emissions. CO2e emissions include carbon dioxide, methane, and nitrous oxide emissions aggregated in accordance with GHG Protocol using AR5 Global Warming Potentials (GWPs).
  3. We have restated prior years’ reporting of Scope 3 Category 3 emissions and updated our 2019 baseline accordingly. Scope 3 Categories 3, 7 and 15 calculations use primary data. Scope 3 Categories 1, 2, 4 and 6 use secondary (spend) data. We continue to evaluate the feasibility of disclosing additional Scope 3 categories in the future.
  4. Mainline + Wholly-Owned Subsidiaries well-to-tank (WTT), Regional Partners well-to-wake (WTW), SAF WTT.