Environmental Data
ESG (Environmental, Social and Governance) data related to our business activities is available below. (Updated: September 29, 2026)
CO2 Emissions
| Item | Boundary | Coverage (FY2025) |
FY2021 | FY2022 | FY2023 | FY2024 | FY2025 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CO2 Emissions (Note 1) | - | t | % | t | % | t | % | t | % | t | % | |||
| Scope 1 (Note 2) | Direct GHG Emissions (Scope 1) | KDDI | - | 7,976 | 0.13 | 5,747 | 0.09 | 5,451 | 0.10 | 5,350  |
0.09 | 5,441 | 0.09 | |
| Group | 100% | 27,687 | - | 88,383 | - | 28,432 | - | 25,743 |
- | 26,919 | - | |||
| Scope 2 (Note 3) (Market-Based) |
Indirect GHG Emissions from Purchased Energy (Scope 2) | KDDI | - | 1,090,954 | 17.71 | 944,876 | 15.23 | 641,922 | 11.42 | 632,623 |
10.49 | 458,488 | 7.81 | |
| Group | 100% | 1,492,048 | - | 1,318,013 | - | 975,173 | - | 969,909 |
- | 748,315 | - | |||
| Scope 2 (Note 3) (Location-Based) |
Group | 100% | 1,614,118 | - | 1,475,170 | - | 1,411,040 | - | 1,412,656 |
- | 1,291,297 | - | ||
| Total Scope 1 + 2 GHG Emissions (Market-Based) |
KDDI | - | 1,098,929 | - | 950,622 | - | 647,373 | - | 637,973 |
- | 463,929 | - | ||
| Group | 100% | 1,519,735 | - | 1,406,396 | - | 1,003,605 | - | 995,652 |
- | 775,234 | - | |||
| Scope 3 (Note 4) | Category 1 | KDDI | - | 3,373,587 | 54.77 | 3,388,959 | 54.64 | 3,251,795 | 57.84 | 3,190,561 | 52.91 | 3,532,496 |
60.15 | |
| Category 2 | 1,367,518 | 22.20 | 1,464,526 | 23.61 | 1,477,618 | 26.28 | 1,584,114 | 26.27 | 1,321,333 |
22.50 | ||||
| Category 3 | 43,950 | 0.71 | 153,839 | 2.48 | 117,113 | 2.08 | 102,227 | 1.70 | 82,731 |
1.41 | ||||
| Category 4 | 12,035 | 0.20 | 6,292 | 0.10 | 5,072 | 0.09 | 5,185 | 0.09 | 5,751 |
0.10 | ||||
| Category 5 | 485 | 0.01 | 160 | 0.00 | 141 | 0.00 | 234 | 0.00 | 235 |
0.00 | ||||
| Category 6 | 908 | 0.01 | 6,114 | 0.10 | 6,271 | 0.11 | 5,578 | 0.09 | 4,887 |
0.08 | ||||
| Category 7 | 2,430 | 0.04 | 2,088 | 0.03 | 1,777 | 0.03 | 1,941 | 0.03 | 2,132 |
0.04 | ||||
| Category 8 | 527 | 0.01 | 527 | 0.01 | 487 | 0.01 | 433 | 0.01 | 441 |
0.01 | ||||
| Category 9 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 |
0.00 | ||||
| Category 10 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 |
0.00 | ||||
| Category 11 | 259,227 | 4.21 | 228,485 | 3.68 | 113,206 | 2.01 | 500,956 | 8.31 | 457,726 |
7.79 | ||||
| Category 12 | 127 | 0.00 | 979 | 0.02 | 918 | 0.02 | 945 | 0.02 | 901 |
0.02 | ||||
| Category 13 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 |
0.00 | ||||
| Category 14 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 |
0.00 | ||||
| Category 15 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 | 0.00 | 0 |
0.00 | ||||
| 5,060,794 | 82.16 | 5,251,969 | 84.67 | 4,974,398 | 88.48 | 5,392,175 | 89.42 | 5,408,633 |
92.10 | |||||
| Total Scope 1 + 2 + 3 GHG Emissions | KDDI | - | 6,159,723 | 100 | 6,202,591 | 100 | 5,621,771 | 100 | 6,030,148 |
100 | 5,872,563 | 100 | ||
| Scope 3 (Note 4) | Category 1 | Group | 100% | - | - | - | - | - | - | 5,910,737 | 57.00 | 5,887,539 | 56.19 | |
| Category 2 | - | - | - | - | - | - | 2,170,627 | 20.93 | 2,170,610 | 20.72 | ||||
| Category 3 | - | - | - | - | - | - | 196,530 | 1.90 | 222,805 | 2.13 | ||||
| Category 4 | - | - | - | - | - | - | 5,209 | 0.05 | 6,069 | 0.06 | ||||
| Category 5 | - | - | - | - | - | - | 305 | 0.00 | 353 | 0.00 | ||||
| Category 6 | - | - | - | - | - | - | 8,691 | 0.08 | 7,594 | 0.07 | ||||
| Category 7 | - | - | - | - | - | - | 3,242 | 0.03 | 3,561 | 0.03 | ||||
| Category 8 | - | - | - | - | - | - | 428 | 0.00 | 675 | 0.01 | ||||
| Category 9 | - | - | - | - | - | - | 0 | 0.00 | 0 | 0.00 | ||||
| Category 10 | - | - | - | - | - | - | 0 | 0.00 | 0 | 0.00 | ||||
| Category 11 | - | - | - | - | - | - | 605,024 | 5.83 | 927,131 | 8.85 | ||||
| Category 12 | - | - | - | - | - | - | 948 | 0.01 | 902 | 0.01 | ||||
| Category 13 | - | - | - | - | - | - | 0 | 0.00 | 0 | 0.00 | ||||
| Category 14 | - | - | - | - | - | - | 0 | 0.00 | 0 | 0.00 | ||||
| Category 15 | - | - | - | - | - | - | 473,054 | 4.56 | 473,054 | 4.52 | ||||
| - | - | - | - | - | - | 9,374,795 | 90.40 | 9,700,295 | 92.58 | |||||
| Total Scope 1 + 2 + 3 GHG Emissions | Group | 100% | - | - | - | - | - | - | 10,370,447 | 100 | 10,477,346 | 100 | ||
- (Note 1)The Scope 1 and Scope 2 emissions (consolidated) results for FY2026.3 have been updated from the provisional values reported in the Annual Securities Report for the same fiscal year.
- (Note 2)Includes heavy oil, diesel, kerosene, and town gas.
- (Note 3)CO2 emissions from electricity consumption are calculated using emission factors provided by electric utility companies, including emissions from heat, steam, and hot/chilled water.
- (Note 4)Emission factors are based on the Ministry of the Environment's "Basic Guidelines on Accounting for Greenhouse Gas Emissions throughout the Supply Chain."
- *= latest data with third-party assurance
- *Coverage is calculated based on operating revenue.
Energy
| Item | Boundary | Coverage (FY2025) |
Unit | FY2021 | FY2022 | FY2023 | FY2024 | FY2025 | |
|---|---|---|---|---|---|---|---|---|---|
| Electricity Consumption | KDDI | - | 1,000kWh | 2,468,974 | 2,216,734 | 2,162,465 | 2,172,276 |
1,903,756 | |
| Group | 100% | 3,634,732 | 3,387,049 | 3,328,127 | 3,400,458 |
3,119,623 | |||
| Renewable Electricity Consumption (as Part of Total Electricity Consumption) | Group | - | 1,000kWh | 379,173 | 488,544 | 967,131 | 1,241,375 |
1,516,113 | |
| Renewable Electricity Generated | KDDI | - | 1,000kWh | 17,664 | 16,649 | 16,240 | 17,237 | 17,394 | |
| Energy Usage at Equipment-Related Facilities | KDDI | - | 1,000kWh | 1,009,802 | 1,039,214 | 1,043,504 | 1,005,340 |
709,611 | |
| Data Centers | Power Usage Effectiveness (Note 1) |
Group | 100% | - | 1.60 | 1.57 | 1.56 | 1.56 | 1.60 |
| Fuel Consumption (Note 2) |
KDDI | - | kℓ | 364 | 546 | 393 | 283 |
348 | |
- (Note 1)For FY2021, the number of overseas data centers owned by KDDI is used as the basis.
- (Note 2)Includes heavy oil, diesel, and kerosene (excluding town gas and LP gas). Emission factors are based on the calculation, reporting, and disclosure system for greenhouse gases under the Act on Promotion of Global Warming Countermeasures.
- *= latest data with third-party assurance
- *Coverage is calculated based on operating revenue.
Resources and Waste
| Item | Boundary | Coverage (FY2025) |
Unit | FY2021 | FY2022 | FY2023 | FY2024 | FY2025 | |
|---|---|---|---|---|---|---|---|---|---|
| Industrial Waste (Note 1) |
Amount of Industrial Waste Generated | KDDI | - | t | 1,945 | 1,186 | 1,136 | 1,112 |
1,144 |
| Amount Recycled (Material Recycling) | 1,714 | 299 | 138 | 119 | 105 | ||||
| Final Disposal Amount | kg | - | 15 | 200 | 150 | 47 | |||
| Amount of Industrial Waste Generated | Group | 100% | t | 4,822 | 4,216 | 8,069 | 4,525 |
4,133 | |
| Amount Recycled (Material Recycling) | (Note 3) | - | 1,571 | 285 | 392 | 387 | |||
| Final Disposal Amount | - | 205 | 531 | 290 | 290 | ||||
| Water Use (Note 2) |
Water Withdrawal | KDDI | - | m3 | 937,826 | 878,595 | 755,299 | 579,820 |
545,668 |
| Group | 100% | 1,630,890 | 2,050,273 | 1,803,453 | 1,706,963 |
1,856,859 | |||
| Water Discharge | Group | 100% | 1,630,890 | 2,050,273 | 1,803,453 | 1,706,963 | 1,856,859 | ||
| Paper Consumption | KDDI | - | t | 5,313 | 6,809 | 6,370 | 6,348 | 6,306 | |
| Paper Reduction Through Web-Based Billing | KDDI | - | t | 5,180 | 5,358 | 5,548 | 5,710 | 5,747 | |
| Mobile Phone Recycling | Collection Results (Including Devices, Batteries, and Chargers) | KDDI | - | ten thousand units | 260 | 217 | 192 | 182 | 181 |
| t | 130 (Note 4) |
108.5 (Note 4) |
96 (Note 4) |
91 (Note 4) |
97 | ||||
| Recycling Rate | % | 99.8 | 99.8 | 99.8 | 99.8 | 99.8 | |||
| Waste Rate | % | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | |||
- (Note 1)Nonhazardous industrial waste (e.g., telecommunications equipment and general waste from KDDI buildings).
- (Note 2)Includes tap water, potable water, recycled water, and well water; excludes wastewater.
- (Note 3)Major subsidiaries.
- (Note 4)Data for FY2021-FY2024 is calculated based on FY2025 actual results.
- *= latest data with third-party assurance
- *Coverage is calculated based on operating revenue.
Environmental Management System
| Item | Unit | FY2025 |
|---|---|---|
| ISO 14001 Certification Rate (Note 1) | % | 100 |
- (Note 1)The percentage of certified facilities among the target facilities (facilities designated as Type 1 or Type 2 Energy Management specified factories, etc.).
FY2030 Target (Consolidated)
| Electricity Consumption (Consolidated) | Unit: 1,000kWh | 3,513,024 |
|---|---|---|
| Water Withdrawal (Consolidated) | Unit: m3/Person | 12 |