NTT — full event log

Every event we have on file across every reporting year. The Data-by-year tab summarises the top 10 per year; this page shows them all.

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2023· 7 events

Dependent: Capital goods & purchased products supply chainData confidence — high

Categories 1 (3.81 MtCO2e) and 2 (4.03 MtCO2e) together represent ~42% of NTT Group's Scope 3 emissions in FY2023, making supply chain decarbonisation — particularly upstream embodied carbon in IT and network equipment — a dominant dependent lever.

sustainability_report p.2

Primary: Fuel- and energy-related emissions (Category 3)Data confidence — high

Category 3 emissions reached 4.16 MtCO2e in FY2023, the single largest Scope 3 category. This reflects upstream (well-to-tank) emissions from the substantial electricity NTT consumes; cleaner grid electricity and renewable PPAs reduce both Scope 2 and this dependent category.

sustainability_report p.2

Expanded data center energy reporting scopeaffects total energy consumption kwhData confidence — med

Total energy use in data centers more than doubled to 1,633,000 MWh in FY2023 (vs 646,000 MWh FY2022), reflecting aggregation of additional domestic and overseas data centers.

sustainability_report p.1

Scaling renewable energy across data centers and operationsData confidence — high

NTT increased absolute renewable energy consumption from 1.27 TWh in FY2020 to 3.53 TWh in FY2023, with the share of renewable energy in data center electricity use rising from 11.3% in FY2020 to 48.1% in FY2023. Renewable adoption is the primary driver of the Scope 2 market-based decline from 3.75 MtCO2e (FY2020) to 2.17 MtCO2e (FY2023), even while location-based emissions ticked up due to operational expansion.

sustainability_report p.1

Primary: Data center efficiency (PUE management)Data confidence — high

Average power usage efficiency (PUE) across NTT data centers was 1.68 in FY2023, broadly stable from 1.65 in FY2020. PUE is a primary operational lever to constrain Scope 2 emissions growth alongside scaling renewable procurement.

sustainability_report p.1

Dependent: Use of sold products (Category 11)Data confidence — high

Category 11 (Use of products sold) contributed 3.5 MtCO2e in FY2023, representing ~19% of NTT's Scope 3 footprint. As a major telecom and ICT services provider, customer-side energy use of NTT equipment is one of the largest dependent decarbonisation levers.

sustainability_report p.2

Dependent: Downstream leased assets (Category 13)Data confidence — high

Category 13 (Leased assets downstream) generated 2.85 MtCO2e in FY2023 — emissions from data center colocation customers and leased network equipment users. Reducing these requires partnership with tenants on energy procurement and efficiency.

sustainability_report p.2

2022· 14 events

Reclassified emissions from Category 15 to Category 3affects scope 3 fuel energy relatedData confidence — high

Effective from FY2022 actual data, the method of recording emissions in Category 3 was changed from Category 15. Change retroactively applied to FY2021 and earlier, with figures revised.

sustainability_report p.2

Changed scope of waste treated by incineration with energy recoveryaffects waste generated tData confidence — high

The scope of calculation of 'amount of waste treated by incineration with energy recovery' was changed from FY2022. The total amount of waste generated remains unchanged.

sustainability_report p.1

Internal Carbon Pricing System introduced at ¥6,500/tCO2affects internal carbon price usd per tco2eData confidence — high

In May 2022, resolution passed at Executive Committee to gradually implement Internal Carbon Pricing System at ¥6,500/t-CO2 within Group companies for decarbonization-related project decisions and procurement

sustainability_report p.33

99% recycling rate target by FY2030Data confidence — high

NTT Group set target for 99% or higher recycling ratio of disposed waste generated by FY2030. FY2021 result: 97.8%

sustainability_report p.47

Joined Joint Alliance for CSR (JAC)affects supply chain audited pctData confidence — high

In July 2022, NTT became the first Asian telecom carrier to join JAC, the global association of telecom operators conducting CSR audits of ICT suppliers worldwide, to coordinate supplier due diligence globally

sustainability_report p.127

New DOCOMO Group structure launched; NTT Communications/COMWARE integratedData confidence — high

NTT Communications and NTT COMWARE became subsidiaries of NTT DOCOMO in January 2022, and a new integrated structure was launched in July 2022 clarifying enterprise, network and software development responsibilities within the DOCOMO Group.

sustainability_report p.4

Primary: Highly efficient data centers with PUE <1.5 and decentralised architecture to reduce energy intensityData confidence — high

NTT's green bond framework designates construction, renovation and operation of data centers with Power Usage Effectiveness below 1.5 as eligible green projects. The IOWN concept also enables a shift from large consolidated data centers to distributed small/medium 'data stations' linked by all-photonics networks, supporting local renewable energy production and consumption. This architectural transition directly reduces per-unit energy consumption. NTT reports CO2 emissions for data centers as an impact reporting item under its Green Finance Framework.

sustainability_report p.27

Dependent: Supply chain GHG reduction via NTT Group Green Procurement Standards and JAC CSR auditsData confidence — high

NTT launched updated Supply Chain Sustainability Promotion Guidelines in 2022 and published NTT Group Green Procurement Standards requesting suppliers reduce greenhouse gas emissions throughout the supply chain. NTT joined the Joint Audit Co-Operation (JAC) in July 2022 as the first Asian telecom operator, enabling CSR audits of ICT suppliers globally. These measures extend NTT's decarbonisation influence across its upstream supply chain, consistent with Scope 3 Category 1 and 4 reduction ambitions.

sustainability_report p.35

Integration of NTT DATA and NTT Ltd. global businessesaffects revenueData confidence — high

In May 2022, NTT announced the integration of NTT DATA and NTT Ltd. global businesses under NTT DATA umbrella from October 2022. NTT DATA owns 55% and NTT 45% of the new overseas operating company. This creates a full-stack global ICT & SI entity.

sustainability_report p.4

Expand renewable energy use to 7 billion kWh by 2030-2040, including off-site PPAs and owned generationData confidence — high

NTT targets approximately 7.0 billion kWh of renewable energy by FY2030–FY2040 (vs 1.0 billion kWh in FY2020), with approximately half of domestic usage coming from NTT-owned energy sources by FY2030. NTT Anode Energy develops solar and other renewable power plants via a Green Power Generation Business and Regional Grid Business. NTT DOCOMO implemented its first off-site corporate PPA in April 2022, sourcing solar power from an NTT Anode Energy plant for network buildings, reducing GHG at one building by ~10,000 tCO2e/year. NTT Communications also launched a renewable energy menu for commercial data center customers using non-fossil certificates. Green bonds (totaling over ¥800 billion equivalent across JPY/EUR/USD tranches) fund renewable energy and related eligible projects.

sustainability_report p.26

Dependent: Green by ICT: customer decarbonisation via NTT DATA consulting, SI and emissions visualisation platformData confidence — high

NTT DATA provides end-to-end green consulting (strategy design), green SI (low-carbon system development) and a green platform (standardised emissions visualisation) to help customers achieve their own carbon neutrality. The GHG emissions visualisation platform supports supplier-specific calculation methods that incorporate emissions reduction efforts of suppliers into procuring companies' own reductions, enabling cross-supply-chain decarbonisation. NTT frames this 'Green by ICT' approach as both a growth opportunity and a societal contribution, alongside promotion of further DX and Remote World to reduce customer travel and facility emissions.

sustainability_report p.26

Internal Carbon Pricing System introduced at ¥6,500/tCO2eaffects internal carbon price usd per tco2eData confidence — high

In May 2022 NTT resolved via Executive Committee to gradually implement an Internal Carbon Pricing System within Group companies at ¥6,500/tCO2e, to be applied when making decarbonisation-related project decisions and procurement choices.

sustainability_report p.26

Primary: IOWN photonics technology to reduce NTT's own energy consumption by 45% by FY2040Data confidence — high

NTT is developing its IOWN (Innovative Optical and Wireless Network) concept, targeting 100× improvement in power efficiency for the photonics part and 45% reduction in total energy consumption compared to the FY2040 outcome scenario. IOWN's All-Photonics Network and photoelectric merging technology replace electronic signal processing with optical technology, dramatically reducing power consumption in data centers, base stations and computing infrastructure. NTT aims for partial commercial deployment by end of FY2022, with scale-up from 2026 onward; IOWN is expected to account for 45% of total energy volume by FY2040.

sustainability_report p.26

Primary: EV100 commitment targeting 100% EV adoption in Japan by 2030Data confidence — high

NTT has incorporated EV100 into Group company business plans as a corporate commitment. The target is 50% EV adoption in Japan by FY2025 and 100% by FY2030, representing a fleet electrification lever for the Group's own operations. FY2021 EV adoption stood at 15%, up from 8% in FY2020, showing steady progress toward the FY2025 interim target.

sustainability_report p.28

2021· 17 events

NTT Group Global Human Rights Policy establishedData confidence — high

In November 2021, NTT revised its existing Human Rights Charter and established the new NTT Group Global Human Rights Policy applying to all employees and business partners globally, based on UN Guiding Principles

sustainability_report p.130

1.8 billion kWh renewable energy (23% of power) with off-site corporate PPAs and own generationData confidence — high

NTT switched 1.8 billion kWh (approx. 23% of group power consumption, 150% YoY) to renewable energy in FY2021. NTT Anode Energy operates green generation, regional grid, consumer energy, and construction businesses. The Group is pioneering off-site corporate PPAs in Japan (e.g., DOCOMO Okayama Building reducing ~10,000 t/year, Seven & i 40-store deal, Ikoma woody biomass plant). Approximately half of FY2030 domestic renewable usage is anticipated from NTT-owned sources. Uses specified non-fossil fuel certificates to achieve effectively 100% renewable.

sustainability_report p.33

Primary: Energy-efficient data centers and TPR campaignData confidence — high

The TPR (Total Power Revolution) Campaign cut electricity usage by ~180 million kWh in FY2021. NTT Communications operates data centers with PUE<1.2 and NTT COMWARE achieves PUE<1.1 (world-leading). The fiscal 2025 target for power efficiency per data transmission in telecommunications is 2x FY2017 (1.9x achieved in FY2021); FY2030 target is 10x FY2013.

sustainability_report p.35

Dependent: Green by ICT — enabling societal emissions reductions 10x NTT's ownData confidence — high

NTT targets contribution to societal GHG reduction of at least 10x NTT's own Scope 1+2 emissions by FY2030. FY2021 contribution was 11.3x own emissions (5,001 ktCO2 reduction vs 444 ktCO2 own). Levers include DX acceleration, remote work promotion, green electricity retail via NTT Anode Energy/docomo Denki Green, and new carbon-neutral data center services with non-fossil certificates.

sustainability_report p.63

Primary: 5G base station power-saving and Green 5G serviceData confidence — high

DOCOMO targets 2030 carbon neutrality for mobile business. Green 5G service uses solar-powered green base stations and corporate PPA renewable electricity to make 5G effectively zero-emission. Self-learning air-conditioning controls, consolidation of base station equipment, and high-voltage direct current supply reduce mobile network power consumption.

sustainability_report p.42

Primary: Remote work and decentralized organization reducing commute/office emissionsData confidence — high

Remote work ratio reached 70.8% in late FY2021 with Remote Standard introduced July 2022 for ~30,000 employees. Decentralization trial of holding company organization from October 2022 to regional offices (Takasaki, Kyoto). 551 satellite offices by Sept 2022 (target 260+). Drives reductions in business travel and commuting Scope 3 categories while improving employee wellbeing.

sustainability_report p.22

NTT Green Innovation toward 2040 vision announcedaffects net zero target yearData confidence — high

NTT announced its environment and energy vision 'NTT Green Innovation toward 2040' in September 2021, targeting carbon neutrality (Scope 1+2) by 2040 and 80% reduction by 2030 vs FY2013. Target validated at 1.5°C level by SBTi in December 2021.

sustainability_report p.26

Scope 3 emissions disclosed for FY2021affects scope 3 co2eData confidence — high

Scope 3 emissions disclosed at 20.82 million tons in FY2021 (6% reduction YoY), estimated based on Japan Ministry of Environment Basic Guidelines for supply chain accounting.

sustainability_report p.28

Female management targets set: 15% by FY2025, 25-30% female directorsaffects workforce management female pctData confidence — high

NTT set new targets: 30% women in new manager appointments annually, 15% women managers by FY2025, 25-30% female directors (Board+Audit+Executive) by FY2025

sustainability_report p.141

Sustainability Committee established under Board; ESG KPIs added to executive pay from FY2022affects esg linked executive pay ynData confidence — high

In November 2021 NTT established a Sustainability Committee chaired by the President directly under the Board of Directors. The Board also decided in November 2021 to include non-financial KPIs (GHG emissions, B2B2X earnings, women in management) in officer compensation from FY2022.

sustainability_report p.28

Offset gap remaining ~10% post-2030 with future technology, no specific durable removals portfolioData confidence — med

The Group Greenhouse Gas Emission Reductions illustration shows 'Offsets' as the residual 10% gap to be closed between 2030 and 2040 net zero. No specific DAC/BECCS/biochar program disclosed. Primary focus is on emissions reduction (45% renewables + 45% IOWN energy savings + 10% energy conservation) rather than carbon removals. Algae growth technology with Euglena is being explored for CO2 fixation as an innovative environmental technology.

sustainability_report p.33

SBT 1.5°C target approval - tightened from 30% to 80% reductionaffects scope 1 co2eData confidence — high

In December 2021, SBTi approved NTT's revised target raising FY2030 Scope 1+2 reduction from 30% (Well-below 2°C, approved 2020) to 80% (1.5°C level) vs FY2018 baseline. Scope 3 target: 15% reduction by FY2030.

sustainability_report p.59

NTT Green Innovation toward 2040 Vision unveiledaffects net zero target yearData confidence — high

In September 2021, NTT Group unveiled new Environment and Energy Vision 'NTT Green Innovation toward 2040' committing to carbon neutrality by FY2040, with mobile (DOCOMO) and data centers carbon neutral by FY2030, and 80% reduction in Scope 1+2 by FY2030 vs FY2013

sustainability_report p.32

Sustainability Committee established under Board of DirectorsData confidence — high

In November 2021, NTT established the Sustainability Committee chaired by the CEO directly under the Board of Directors, with Green Innovation Committee as sub-committee replacing the Global Environmental Protection Promotion Committee

sustainability_report p.14

Primary: IOWN photonics-electronics convergence to cut network/data center power by 45%Data confidence — high

IOWN (Innovative Optical and Wireless Network) is NTT's flagship decarb lever, targeting 100x power efficiency in photonics-applied portions of networks and computing. Target: reduce GHG by 45% via IOWN energy savings. All-Photonics Network plus disaggregated computing aims to address rapidly growing data traffic. Services begin during FY2022 with broader rollout from 2026. Penetration of IOWN technologies targets 15% of total energy volume by FY2030, 45% by FY2040.

sustainability_report p.37

Dependent: Scope 3 supplier engagement and Green Procurement StandardsData confidence — high

NTT requires suppliers to set GHG reduction targets equivalent to or higher than NTT's (15% Scope 3 reduction by FY2030 vs FY2018). Direct dialogue with ~40 critical suppliers annually plus SAQ for ~130 critical suppliers (90% of procurement value). Joined JAC in July 2022 for global supplier audits. C-Turtle platform helps suppliers visualize and reduce emissions with supplier-specific calculation method.

sustainability_report p.44

SBTi validation of 1.5°C-aligned emissions targetaffects scope 1 co2eData confidence — high

NTT's GHG reduction target (80% Scope 1+2 reduction by FY2030 vs FY2013 baseline) was approved by Science Based Targets initiative (SBTi) as 1.5°C-aligned in December 2021.

sustainability_report p.28

2020· 2 events

Scope 3 Cat 1 & 2 methodology refined to supplier-specific emission factorsaffects scope 3 purchased goodsData confidence — high

From FY2020, Scope 3 Cat 1 and Cat 2 calculations switched from Ministry of Environment emission intensity to supplier-specific emission factors (from publicly released figures) to reflect supplier reduction efforts

sustainability_report p.62

CDP A List rating and Supplier Engagement LeaderData confidence — high

NTT acquired CDP A List rating (highest) for climate in 2020 and was selected as Supplier Engagement Leader in 2021

sustainability_report p.59