Decarbonized society

KDDI's Approach (Decarbonized society, Carbon neutral, net zero)

The KDDI Group recognizes that it is an important responsibility as a global company to promote global environmental protection so that we can pass on our irreplaceable earth to the next generation, and we will continue our efforts to ensure a prosperous planet for the future.

The KDDI Group aims to achieve carbon neutrality CO2 emissions for Scopes 1 and 2 of the entire KDDI Group by fiscal 2030

Scope 1KDDI Group
Approximately 2% of its CO2 emissions
Details In-house power generation at communication facilities, fuel consumption by cable-laying vessels, thermal power generation
Methods Offsetting being planned by quality-guaranteed carbon credits (absorbing and removing types (carbon-absorbing and removal origin))
Scope 2KDDI Group
Approximately 98% of its CO2 emissions
Details Electricity comprises approximately 99% of the energy used by communication facilities (of which stations, and station buildings and datacenters account for 50% each), and approximately 1% is from heat and steam
Methods Power
  1. 1Introducing energy-saving functions and facilities
    Introducing sleep functions into stations, optimal control for the output and cooling at station buildings and datacenters, introducing other new technologies, updating to high-efficiency facilities, etc.
  2. 2Switching to and introducing renewable energy [1]
    1. (1)Introducing renewable energy sources with additionality that comply with RE100, such as those from au Renewable Energy, Inc. and other electricity companies and PPA we will mainly consider solar power but also wind power and other sources (aiming to shift over 50% of the electricity used by KDDI alone to renewable energy by fiscal 2030)
    2. (2)Use Non-Fossil Fuel Certificates in Japan, and I-REC certificates etc. overseas (for offices, tenants and indirect electricity usage where KDDI is not the direct electricity subscriber)

All Telehouse-brand datacenters around the world will aim to switch to net-100% renewable energy by the end of fiscal 2025, by the means above [2].

Heat and steam Offsetting being planned by switching to electricity and turning to quality-guaranteeing certificates and carbon credits (absorbing and removing types (carbon-absorbing and removal origin))
Scope 3 Details Approximately 95% falls into Category 1 (purchase of services and products) and Category 2 (capital goods)
Methods Request and support initiatives aimed at visualizing and reducing CO2 emissions for business partners (sharing knowledge on CO2 emission reduction through dialogues, providing guidebooks, and similar methods)
  1. [1]Abbreviations

    • PPA: Power Purchase Agreement. A system where PPC business operators build solar power generation facilities on idle land and the like owned by parties needing electricity, providing renewable energy
    • RE100: Renewable Energy 100%. An international initiative aimed at procuring energy used in business activities completely from renewable energy sources
    • FIT: Feed-in-tariff system. A system that mandates electricity companies to purchase the electricity produced by solar power and wind power facilities at the prices specified by the state
    • I-REC: International Renewable Energy Certificate. One of the renewable energy certificates overseas
  2. [2]Targets at datacenters

    • The Telehouse datacenters covered by these targets refer to the datacenters whose buildings and facilities are owned by the KDDI Group. Excluded are the types where the KDDI Group borrows part of other companies' datacenters as facilities to provide services.
    • These targets do not include communication station buildings for company businesses, resale of other companies' services, and datacenters not included in consolidated financial statements. Communication station buildings for company businesses aim to achieve carbon neutrality CO2 emissions by fiscal 2030 (Scopes 1+2.)
    • Under Scope 2, the plan is to switch to using 100% of electricity from renewable sources by fiscal 2025, and for heat and steam sources to achieve carbon neutrality CO2 emissions by fiscal 2030 together with Scope 1.
    • Telehouse customers who procure their own environmental values may be excluded from the coverage.
    • Datacenters that are scheduled for closure are not covered by these targets.

CO2 Emissions

Item Boundary Coverage
FY2018 FY2019 FY2020 FY2021 FY2022
Third-party guarantee for Scope 1 emissions and Scope 2 emissions - Planning to obtain in March 2024
Third-party verification of Scope 3 emissions -
CO2 Emissions - t % t % t % t % t %
Scope 1 [3] All direct GHG emissions KDDI - 6,539 0.12 6,581 0.10 5,746 0.09 7,976 ✔ 0.13 5,747 0.09
Group 100% 25,511 - 25,169 - 25,420 - 27,687 ✔ - 88,383 -
Scope 2 [4]
Indirect GHG emissions from consumption of purchased electricity, heat or steam KDDI - 1,058,143 18.98 1,041,559 16.13 1,049,105 16.28 1,090,954 ✔ 17.71 944,876 15.23
Group 100% 1,369,942 - 1,352,131 - 1,296,381 - 1,492,048 ✔ - 1,318,013 -
Scope 2 [4]
Group 100% 1,486,429 - 1,486,924 - 1,475,724 - 1,614,118 ✔ - 1,475,170 -
Total of Scope 1 + 2 emissions
KDDI - 1,064,683 - 1,048,140 - 1,054,850 - 1,098,929 ✔ - 950,622 -
Group 100% 1,395,453 - 1,377,300 - 1,321,801 - 1,519,735 ✔ - 1,406,396 -
  1. [3]Heavy oil (crude oil), diesel, kerosene, town gas

  2. [4]The CO2 emissions for power consumption are calculated using the emission factors furnished by electric utility operators. (Emissions from heat, steam, and hot and chilled water consumption are included.)

  • Recent data with third-party guarantees ✔.
  • The coverage is calculated based on operating revenue.

Renewable Energy Business

We launched solar power generation business in November 2013 with the aim of contributing to reduction of CO2 emissions. We constructed solar power generation facilities on part of company-owned land in seven facilities of four locations around Japan and sell the power to electric power companies based on the Feed-in Tariff Scheme for Renewable Energy.

Unit: MWh
FY2017 FY2018 FY2019 FY2020 FY2021 FY2022
Total generated energy (sold) 18,137 17,998 17,406 17,566 17,664 16,649

Since September 1, 2021, in "au Denki" electricity supply service, KDDI has offered the "eco Plan." The practical renewable energy rate of this electricity supply plan is 100%, contributing to reduce CO2 emission from the society. The rate of renewable energy of our procured electricity has achieved 100% by supplying electricity together with non-fossil fuel energy certificates that have environmental value of not emitting CO2, such as solar and wind power. The plan has introduced a system that 2% of electricity charges will be donated to conservation efforts for the global environment, which allows KDDI to work together with customers to contribute to realize decarbonized society. The subsidiary, ENERES Co., Ltd. offers eco-friendly services, such as "RE100 Menu" that supplies electricity generated only from renewable energy sources that meets the RE100 criteria and "Non-Carbon Menu" that supplies electricity without any adjusted emission coefficients, and thus has contributed to customers' initiatives to mitigate global warming through its business.

Green Supported by ICTs

Reducing Power Consumption and Undertaking Disaster Measure Initiatives at Base Stations

The Environmental Eco Label is granted to KDDI ICT services that contribute to reducing the environmental impact of customers and society (reducing CO2 emissions).

Environmental Eco Label services Content
KDDI Cloud Platform Service KDDI operates and maintains this platform, enabling customers to increase or decrease their server capacity remotely from their own offices, without having to travel to the data center where the servers are located.
Furthermore, customers can reduce the amount of CO2 emissions they are responsible for by transferring the servers that they install, operate and maintain themselves (on-premises environment) to the KDDI Cloud Platform Service. With this service, server operations are performed with an economy of scale unique to a telecommunications operator, enabling an approximately 38% reduction in CO2 emissions per server per year in comparison to when customers operate their servers themselves.
Telehouse Data Center Services These data centers have high power supply capacity, highly efficient and reliable power generation equipment, energy-efficient air conditioning equipment, LED lighting, outdoor lights that use wind and solar power and other advanced, energy-efficient equipment.
KDDI IoT Communication Service LPWA This telecommunications service uses LPWA technology, which utilizes KDDI's 4G LTE network. This technology reduces the power consumed by telecommunication devices and provides telecommunications coverage over a wider area.
au Denki RE100 Menu and Non-Carbon Menu Under the RE100 Menu, we supply electricity that meets RE100 criteria by supplying electricity derived from renewable energy sources (including electricity under Feed-in Tariff scheme) and offsetting carbon through the purchase of J-Credit (derived from renewable energy).
Under the Non-Carbon Menu, we supply electricity with zero CO2 emissions derived from the electricity purchase by utilizing J-credit scheme.

KDDI's effort to conserve environment

As the KDDI Group benefits greatly from the natural environment, we believe it is important to promote activities to address environmental issues. In order to pass on our irreplaceable earth to the next generation, KDDI Group employees are engaged in various activities to preserve the global environment in cooperation with various stakeholders, including local residents, governments, universities, NGOs and NPOs.