Environmental Data
ESG (Environmental, Social and Governance) data related to our business activities is available below. (Updated: September 30, 2025)
CO2 Emissions
| Item | Boundary | Coverage (FY2024) |
FY2020 | FY2021 | FY2022 | FY2023 | FY2024 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Third-party Assurance of Scope 1 and Scope 2 GHG Emissions | - | ◯ | ◯ | ◯ | ◯ | Assurance planned: Mar 2026 |
||||||||
| Third-party Verification of Scope 3 GHG Emissions | - | ◯ | ◯ | ◯ | ◯ | ◯ | ||||||||
| CO2Emissions | - | t | % | t | % | t | % | t | % | t | % | |||
| Scope 1 *1 | All Direct GHG Emissions | KDDI | - | 5,746 | 0.09 | 7,976 | 0.13 | 5,747 | 0.09 | 5,451  |
0.10 | 5,350 | 0.09 | |
| Group | 100% | 25,420 | - | 27,687 | - | 88,383 | - | 28,432 |
- | 25,743 | - | |||
| Scope 2 *2 (Market-Based) |
Indirect GHG Emissions from Consumption of Purchased Electricity, Heat or Steam | KDDI | - | 1,049,105 | 16.28 | 1,090,954 | 17.71 | 944,876 | 15.23 | 641,922 |
11.42 | 632,623 | 10.49 | |
| Group | 100% | 1,296,381 | - | 1,492,048 | - | 1,318,013 | - | 975,173 |
- | 969,909 | - | |||
| Scope 2 *2 (Location-Based) |
Group | 100% | 1,475,724 | - | 1,614,118 | - | 1,475,170 | - | 1,411,040 |
- | 1,412,656 | - | ||
| Total Scope 1 + 2 GHG Emissions (Market-Based) |
KDDI | - | 1,054,850 | - | 1,098,929 | - | 950,622 | - | 647,373 |
- | 637,973 | - | ||
| Group | 100% | 1,321,801 | - | 1,519,735 | - | 1,406,396 | - | 1,003,605 |
- | 995,652 | - | |||
| Scope 3 *3 | Category 1 | KDDI | - | 3,581,713 | 55.57 | 3,373,587 | 54.77 | 3,388,959 | 54.64 | 3,251,795 | 57.84 | 3,190,561 |
52.91 | |
| Category 2 | 1,486,988 | 23.07 | 1,367,518 | 22.20 | 1,464,526 | 23.61 | 1,477,618 | 26.28 | 1,584,114 |
26.27 | ||||
| Category 3 | 41,729 | 0.65 | 43,950 | 0.71 | 153,839 | 2.48 | 117,113 | 2.08 | 102,227 |
1.70 | ||||
| Category 4 | 7,183 | 0.11 | 12,035 | 0.20 | 6,292 | 0.10 | 5,072 | 0.09 | 5,185 |
0.09 | ||||
| Category 5 | 464 | 0.01 | 485 | 0.01 | 160 | 0.00 | 141 | 0.00 | 234 |
0.00 | ||||
| Category 6 | 662 | 0.01 | 908 | 0.01 | 6,114 | 0.10 | 6,271 | 0.11 | 5,578 |
0.09 | ||||
| Category 7 | 1,897 | 0.03 | 2,430 | 0.04 | 2,088 | 0.03 | 1,777 | 0.03 | 1,941 |
0.03 | ||||
| Category 8 | 514 | 0.01 | 527 | 0.01 | 527 | 0.01 | 487 | 0.01 | 433 |
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 | 268,754 | 4.17 | 259,227 | 4.21 | 228,485 | 3.68 | 113,206 | 2.01 | 500,956 |
8.31 | ||||
| Category 12 | 150 | 0.00 | 127 | 0.00 | 979 | 0.02 | 918 | 0.02 | 945 |
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 | ||||
| 5,390,054 | 83.63 | 5,060,794 | 82.16 | 5,251,969 | 84.67 | 4,974,398 | 88.48 | 5,392,175 |
89.42 | |||||
| Total Scope 1 + 2 + 3 GHG Emissions | KDDI | - | 6,444,904 | 100 | 6,159,723 | 100 | 6,202,591 | 100 | 5,621,771 |
100 | 6,030,148 | 100.00 | ||
| Scope 3 *3 | Category 1 | Group | 100% | - | - | - | - | - | - | - | - | 7,475,856 | 62.64 | |
| Category 2 | - | - | - | - | - | - | - | - | 2,170,627 | 18.19 | ||||
| Category 3 | - | - | - | - | - | - | - | - | 196,530 | 1.65 | ||||
| Category 4 | - | - | - | - | - | - | - | - | 5,209 | 0.04 | ||||
| Category 5 | - | - | - | - | - | - | - | - | 305 | 0.00 | ||||
| Category 6 | - | - | - | - | - | - | - | - | 8,691 | 0.07 | ||||
| Category 7 | - | - | - | - | - | - | - | - | 3,242 | 0.03 | ||||
| Category 8 | - | - | - | - | - | - | - | - | 428 | 0.00 | ||||
| Category 9 | - | - | - | - | - | - | - | - | 0 | 0.00 | ||||
| Category 10 | - | - | - | - | - | - | - | - | 0 | 0.00 | ||||
| Category 11 | - | - | - | - | - | - | - | - | 605,024 | 5.07 | ||||
| Category 12 | - | - | - | - | - | - | - | - | 948 | 0.01 | ||||
| Category 13 | - | - | - | - | - | - | - | - | 0 | 0.00 | ||||
| Category 14 | - | - | - | - | - | - | - | - | 0 | 0.00 | ||||
| Category 15 | - | - | - | - | - | - | - | - | 473,054 | 3.96 | ||||
| Total Scope 3 GHG Emissions | - | - | - | - | - | - | - | - | 10,939,914 | 91.66 | ||||
| Total Scope 1 + 2 + 3 GHG Emissions | Group | 100% | - | - | - | - | - | - | - | - | 11,935,566 | 100.00 | ||
- *1Includes heavy oil, diesel, kerosene, and town gas.
- *2CO2 emissions from electricity consumption are calculated using emission factors provided by electric utility companies, including emissions from heat, steam, and hot/chilled water.
- *3Emission 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 (FY2024) |
Unit | FY2020 | FY2021 | FY2022 | FY2023 | FY2024 | |
|---|---|---|---|---|---|---|---|---|---|
| Electric Power Consumption | KDDI | - | 1,000kWh | 2,357,458 | 2,468,974 | 2,216,734 | 2,162,465 |
2,172,276 | |
| Group | 100% | 3,198,506 | 3,634,732 | 3,387,049 | 3,328,127 |
3,400,458 | |||
| Electric Power Consumption Derived from Renewable Energy Sources | Group | - | 1,000kWh | 338,319 | 379,173 | 488,544 | 967,131 |
1,241,375 | |
| Total Generated Renewable Energy | KDDI | - | 1,000kWh | 17,566 | 17,664 | 16,649 | 16,240 | 17,237 | |
| Energy Usage at Equipment-Related Facilities | KDDI | - | 1,000kWh | 947,613 | 1,009,802 | 1,039,214 | 1,043,504 |
1,005,340 | |
| Data Center | Power Usage Effectiveness *1 | Group | 100% | - | 1.62 | 1.60 | 1.57 | 1.56 | 1.56 |
| Fuel Consumption *2 | KDDI | - | kℓ | 345 | 364 | 546 | 393 |
283 | |
- *1For FY2020–2021, the number of overseas data centers owned by KDDI is used as the basis.
- *2Includes 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 (FY2024) |
Unit | FY2020 | FY2021 | FY2022 | FY2023 | FY2024 | |
|---|---|---|---|---|---|---|---|---|---|
| Third-party Assurance of Water Usage (non-consolidated and consolidated) | - | - | - | ◯ | ◯ | ◯ | ◯ | Assurance planned: Mar 2026 |
|
| Third-party Assurance of Industrial Waste (non-consolidated and consolidated) | - | - | - | ◯ | ◯ | ◯ | ◯ | Assurance planned: Mar 2026 |
|
| Industrial Waste [1] | Discharge Amount | KDDI | - | t | 2,318 | 1,945 | 1,186 | 1,136 |
1,112 |
| Recycling Amount | 1,073 | 1,714 | 299 | 138 | 119 | ||||
| Final Disposal Amount | kg | - | - | 15 | 200 | 150 | |||
| Discharge Amount | Group | 100% | t | 3,319 | 4,822 | 4,216 | 8,069 |
4,525 | |
| Recycling Amount | *3 | - | - | 1,571 | 285 | 392 | |||
| Final Disposal Amount | - | - | 205 | 531 | 290 | ||||
| Water Usage [2] | Water Withdrawal | KDDI | - | m3 | 841,758 | 937,826 | 878,595 | 755,299 |
579,820 |
| Group | 100% | 1,156,206 | 1,630,890 | 2,050,273 | 1,803,453 |
1,706,963 | |||
| Water Discharge Volume | Group | 100% | 1,156,206 | 1,630,890 | 2,050,273 | 1,803,453 | 1,706,963 | ||
| Paper Usage | KDDI | - | t | 8,798 | 5,313 | 6,809 | 6,370 | 6,348 | |
| Paper Reduction Through Web-Based Billing | KDDI | - | t | 4,962 | 5,180 | 5,358 | 5,548 | 5,710 | |
| Mobile Phone Recycling | Collection Results (Including Devices, Batteries, and Chargers) | KDDI | - | ten thousand units | 258 | 260 | 217 | 192 | 182 |
| t | 129 *4 | 130 *4 | 108.5 *4 | 96 *4 | 91 | ||||
| Recycling Rate | % | 99.8 | 99.8 | 99.8 | 99.8 | 99.8 | |||
| Waste Rate | % | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | |||
- *1Nonhazardous industrial waste (e.g., telecommunications equipment and general waste from KDDI buildings).
- *2Includes tap water, potable water, recycled water, and well water; excludes wastewater.
- *3Major subsidiaries.
- *4Data for FY2020–FY2023 is calculated based on FY2024 actual results.
- *= latest data with third-party assurance
- *Coverage is calculated based on operating revenue.
Environmental Management System
| Item | Unit | FY2024 |
|---|---|---|
| ISO 14001 Certification Rate *1 | % | 100 |
- *1The percentage of certified facilities among the target facilities (facilities designated as Type 1 or Type 2 Energy Management specified factories, etc.).
KDDI Targets for FY2030: Consolidated data
| Consolidated Electricity Consumption | Unit: 1,000kWh | 3,513,024 |
|---|---|---|
| Consolidated Water Resource Input | Unit: m3/Person | 12 |