In 2025, KDDI completed a corporate carbon footprint assessment and publicly disclosed its greenhouse gas (GHG) emissions according to the GHG Protocol, covering Scope 1 (direct emissions from owned or controlled sources), Scope 2 (indirect emissions from purchased energy) and Scope 3 (indirect emissions across the value chain).
KDDI has also provided a category-level breakdown for 15 out of 15 Scope 3 emissions categories, offering greater transparency into its value chain emissions.
| Metric (tCO2e) | 2025 | 2024 | 2023 | 2022-2019 |
|---|---|---|---|---|
Total Scope 1 | 25,743a | 28,432a | 88,383a | |
Total Scope 2 | ||||
Market-Based | 969,909a | 975,173a | 1,318,013a | |
Location-Based | 1,412,656a | 1,411,040a | 1,475,170a | |
Total Scope 3 | 10,939,914a | 4,974,398a | 5,251,969a | |
Total Scope 1 Revenue Intensity (tCO2e/$M) | 0.6615a | 0.7483a | 2.0757a |
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In 2025, the total operational greenhouse gas (GHG) emissions of KDDI amounted to 1,438,399 metric tons of CO2 equivalent. This figure includes both direct emissions from owned or controlled sources (Scope 1) and indirect emissions from purchased energy (Scope 2).a
Compared to 2024, the total operational greenhouse gas (GHG) emissions of KDDI decreased by 0.07%, showing that the company has made progress in taking action to reduce the climate impact of its operations.a
In 2025, the total Scope 1 emissions of KDDI were 25,743 metric tons of CO₂ equivalent (tCO₂e).a
Since 2019, KDDI's Scope 1 emissions have remained relatively, stable, indicating that KDDI's emissions have plateaued with no significant change in its operational footprint.ab
Compared to the previous year (2024), KDDI's Scope 1 emissions decreased by 9.46%, highlighting the company's efforts to lower direct emissions from assets it owns or controls.a
In 2025, KDDI reported Scope 2 greenhouse gas (GHG) emissions of 969,909 tCO₂e using the market-based method and 1,412,656 tCO₂e using the location-based method.a
Since 2019, KDDI's Scope 2 greenhouse gas (GHG) emissions (Location-Based) have remained relatively stable, indicating that KDDI's emissions have plateaued with no significant change in its energy consumption footprint.ab
Compared to the previous year (2024), KDDI's Scope 2 emissions (Location-Based) have remained relatively stable, indicating that KDDI's emissions have plateaued with no significant change in its energy consumption footprint.a
In 2025, KDDI reported its Scope 2 emissions using the market-based method and using the location-based method.a
In 2025, KDDI reported 10,939,914 metric tons of CO₂ equivalent (tCO₂e) of Scope 3 greenhouse gas (GHG) emissions, representing indirect emissions across its upstream and downstream value chain.a
The 2025 disclosure of KDDI includes a breakdown across 15 of the 15 Scope 3 categories defined by the GHG Protocol, matching the level of disclosure in 2024, demonstrating consistent Scope 3 emissions reporting coverage year over year.a
In 2025, KDDI reported total Scope 3 emissions of 10,939,914 metric tons of CO₂ equivalent (tCO₂e).a
Approximately 90.14% of these emissions originated from upstream activities such as purchased goods and capital goods, while 9.86% came from downstream activities like product use, distribution, and end-of-life treatment.a
Since 2019, KDDI's Scope 3 emissions have increased by 142.55%, reflecting a rising long-term trend in Scope 3 emissions over time.ab
Compared to the previous year (2024), KDDI's Scope 3 emissions increased by 119.92%, suggesting that the company faced challenges in reducing emissions across its value chain.a
In 2025, KDDI reported emissions for 15 out of the 15 Scope 3 categories defined by the GHG Protocol.a
This reflects a high level of granularity and transparency in the company's emissions reporting.
In 2025, the largest contributors to KDDI's Scope 3 emissions were:a
In 2025, KDDI reported Scope 1 greenhouse gas (GHG) emissions of 25,743 tCO₂e and total revenues of USD 38,916 millions. This translates into an emissions intensity of 0.66 tCO₂e per millions USD.a
In 2025, KDDI reported a Scope 1 emissions intensity of 0.66 tCO₂e per millions USD. Compared to the peer group median of 2.06, this places the company below its industry benchmark, indicating it is more carbon-efficient than most competitors.a
In 2025, KDDI ranked 5 out of 25 companies in its industry peer group, based on Scope 1 emissions intensity (measured in tCO₂e per millions USD).a
This places KDDI among the top performers, with one of the lowest emissions intensities relative to peers.a
In 2025, KDDI reported a total carbon footprint of 12,378,313 metric tons of CO₂ equivalent (tCO₂e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 92.99% increase compared to 2024, suggesting a rise in emissions across its operations or value chain.a
The largest contributor to KDDI's total carbon footprint was Scope 3 emissions, accounting for 88.38% of the company's total carbon footprint, followed by Scope 2 emissions at 11.41%.a