Tata Consultancy Services

Carbon per million dollars of revenue. The legacy industry-standard reference (CDP, MSCI). Useful for cross-sector context, but distorted by margin — high-margin firms appear artificially efficient. Read alongside the operational and asset intensities for the full picture.

OpEx (operating expenditure) is the running cost of the business — staff, services, energy, materials. This shows how carbon-intensive operations are per million dollars of spend. Removes the margin distortion that revenue-based ratios introduce.

EVIC (Enterprise Value Including Cash) is the firm's total capital footprint — equity + debt + cash + minority interest. The EU's standard intensity measure (SFDR PAI 3) — answers: how much carbon does each million of capital deployed in this business produce?

PP&E (Property, Plant & Equipment) plus leased real-estate assets is the firm's physical infrastructure on the balance sheet. This shows the carbon intensity of that physical footprint — uses Scope 1+2+3 for consistency with the other headline intensities. Surfaces stranded-asset risk for asset-heavy firms.

Carbon per FTE (full-time-equivalent employee) — the diagnostic measure for people-leveraged businesses where headcount, not capital, drives delivery. Captures the office, energy and travel footprint per person.

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Renewable energy procurement increased to 74% of total energy use in FY2024 (up from 55.2% FY23). Levers include: (1) rooftop solar PV at 10.2 MWp generating 3% of total electricity, with 260 KWp additional planned for FY25; (2) switch to green tariffs in Ahmedabad, Kolkata, Chennai, Kochi, Trivandrum; (3) open access Power Purchase Agreements (PPAs) at Ambattur and Chennai One Magnum adding ~6.5 million green units; (4) Energy Attribute Certificates (EACs) in select overseas geographies to support carbon neutrality claims. Data centre at Yantra Park uses 100% RE; Siruseri uses 73% RE.

TCS achieved carbon neutrality across Scope 1 and Scope 2 in North America, UK & Ireland, Europe, Asia Pacific (including Japan), Latin America, and Middle East & Africa in FY2024. The company explicitly states it is not focusing on offsetting to drive reductions and may take up carbon cost/tax mechanism in future. No DAC, BECCS, biochar, or nature-based removals disclosed. Carbon neutrality claims are supported via EAC procurement rather than durable removals.

• Green buildings and HVAC/UPS energy efficiency

  67.3% of total office space in India is certified to Indian Green Building Council standards (39 offices, 25.74 million sq.ft.). Energy efficiency initiatives include VRF HVAC systems, high-efficiency VFD chillers, modular UPS (90-95% efficiency), and lifecycle replacement of HVAC equipment. Saved 16,301 MWh / 11,671 tCO2e in FY 2024 through building/IT energy efficiency. 22 campuses certified to ISO 50001:2018 Energy Management Systems.

• Green IT — data center and equipment optimization

  Data center PUE weighted average of 1.7 across Yantra Park and Siruseri data centers. 54 equipment rooms reduced PUE from 1.88 in FY23 to 1.76 in FY24. Initiatives include server consolidation (80kW reduction in one DC), procurement of energy-efficient IT equipment, UPS optimization, cooling optimization (return set temp 24±1°C), cold-aisle containment, blanking panels. TCS Clever Energy™ IoT platform provides real-time energy monitoring across all offices.

• Employee commute — EV fleet transition and public transport

  Employee commuting (Scope 3 Cat 7) at 307,149 tCO2e in FY24 (up from 217,364 in FY23 due to Return to Office). Levers include: transition of company-provided cabs and buses to EVs; EV charging facilities for private vehicles; employee engagement to promote public transport. Approximately 55% of employees working from office on all weekdays.

• Business travel reduction and SAF adoption

  Business travel (Scope 3 Cat 6) is 117,310 tCO2e in FY24 (up from 89,907 in FY23 due to post-pandemic resumption). TCS plans to reduce business travel through use of collaborative tools and technology, and use of flights with sustainable aviation fuel (SAF) or other options as commercially available.

• Green buildings and building energy efficiency

  67.3% of TCS India built-up area (25.74 million sq.ft across 39 offices) is certified to IGBC Green Building standards (Platinum certifications added at Sholinganallur Chennai and Deccan Park Hyderabad in FY24). Initiatives include energy-efficient AHUs, VRF systems, high-efficiency VFD chillers, modular UPS (90-95% efficiency), R-22 replacement, life-cycle equipment replacement. HVAC/lighting efficiency saved 16,301 MWh in FY2024 (~11,671 tCO2e avoided).

• Employee commute and business travel decarbonisation

  Transition to EV transport fleet (cabs and buses), EV charging facilities for private employee vehicles, employee engagement to promote public transport use. For business travel, reduce travel through collaborative tools and use of flights with sustainable aviation fuel (SAF) as commercially available. Scope 3 employee commuting (Cat 7) was 307,149 tCO2e in FY 2024 — the largest scope 3 category — and business travel (Cat 6) was 117,310 tCO2e.

• Data center and Green IT optimization

  Reduced power consumption in one data centre by 80kW via server consolidation and optimization. Weighted average PUE at TCS data centers is 1.7 in FY 2024 (target 1.65 in FY 2025). Yantra Park data center uses 100% renewable energy; Siruseri uses 73% RE. Equipment rooms PUE improved from 1.88 in FY23 to 1.76 in FY24. TCS Clever Energy IoT platform monitors real-time energy across all offices.

• Energy efficiency in HVAC, UPS, lighting at offices

  Building infrastructure efficiency upgrades delivered 4,219 MWh energy savings (3,016 tCO2e reduction) in FY2023. Initiatives included energy-efficient AHU fans, VRF systems for 24x7 variable loads, oilless centrifugal chillers (magnetic/ceramic bearing), chiller plant managers, IGBT-based modular UPS, LED lighting with advanced controls, EFF1/IE3 motors, 11kV distribution, and gearless elevator motors. 64.6% of India office space is IGBC-certified green.

• Vision 25x25: delinking growth from real estate expansion

  TCS' Vision 25x25 strategic lever delinks business growth from campus expansion, reducing emissions related to employee commutes and business travel by enabling distributed/remote work through the Secure Borderless Workspaces (SBWS) model.

• Green IT and data center PUE optimization

  Data center and IT device consolidation and optimization initiatives. TCS data centers achieved a weighted average PUE of 1.66 in FY2023. Green attributes are considered in every IT asset procurement.

• Office energy efficiency (HVAC, UPS, LED, chillers)

  During FY2023, HVAC system upgrades (energy efficient AHUs, VRF systems, oilless centrifugal chillers, chiller plant manager) delivered 505,266 kWh savings. UPS efficiency projects (IGBT-based, modular UPS) delivered 333,448 kWh savings. Other initiatives include LED lighting with advanced controls, EFF1/IE3 high-efficiency motors, 11kV power distribution. Total energy efficiency savings: 4,219 MWh equivalent to 3,016 tCO2e reduction in FY2023.

• Green buildings - 64.6% of India real estate IGBC certified

  36 TCS offices with over 23.68 million sq ft of office area are certified green buildings by Indian Green Building Council (IGBC), making up 64.6% of TCS' total real estate portfolio in India. All new campuses are designed to green building standards for energy and resource efficiency, with 50% higher water efficiency, 100% sewage treatment and recycling, and rainwater harvesting.

• Clever Energy IoT platform for real-time energy optimization

  TCS' IoT-based Real-time Energy Management System (TCS Clever Energy™) involves real time monitoring to optimize operational energy efficiency across all offices. Chiller optimization, AHU optimization, AC schedule changes and elimination of non-peak hour energy wastage delivered 3.38 Mn kWh energy savings. Data centers achieved weighted average PUE of 1.66.

• Business travel reduction via Location Independent Agile / SBWS

  TCS' Secure Borderless Workspaces (SBWS) and Location Independent Agile model reduces business travel and enables remote delivery. However business travel emissions (Cat 6) increased to 89,907 tCO2e in FY2023 from 35,043 tCO2e in FY2022 as in-person engagement resumed post-pandemic. TCS is rebuilding travel norms post return-to-office while preserving distributed delivery capabilities.

• TCS Clever Energy IoT platform for real-time energy optimization

  TCS' Clever Energy IoT-based real-time energy management system delivered 3.38 million kWh energy savings in FY2023 through chiller optimization, AHU optimization, AC schedule changes, and elimination of non-peak hour energy waste. The platform is also commercialized to help clients achieve their sustainability goals.

• Data center PUE optimization to 1.65

  Achieved target power utilization efficiency (PUE) of 1.65 across 21 of 23 target data centers. Weighted average PUE of 23 DCs reduced to 1.66 in FY2021 from 2.54 in 2014. Extended program to 44 additional DCs reducing weighted average PUE of all DCs to 1.77 from 2.4 in 2017. Enablers: modular UPS, cold aisle containment, in-row cooling, rear door heat exchanger with water cooled rack, and high-density virtualized hosting.

• Business travel reduction via SBWS and Location Independent Agile

  Scope 3 business travel and employee commuting — historically ~60% of value chain emissions — each saw >95% reduction in FY2021 driven by SBWS remote-working model. Vision 25x25 is expected to make this structurally smaller in the longer term, even post-pandemic. TCS invested in remote connectivity, data security and collaboration tools to enable seamless business interaction without travel.

• Office energy efficiency: IoT-based Remote Energy Management + green buildings

  Over 60% of TCS' India office space is designed to LEED green building standards. The IoT-based Remote Energy Management System with cognitive AI/ML algorithms redefined a 'new normal' consumption profile during the pandemic and drove additional optimization, saving ~0.4 million kWh through UPS and server room consolidation. Five campuses (Synergy Park, Sahyadri Park, TCS Center Kochi, Garima Park, Siruseri) are ISO 50001:2018 certified.

• Supplier sustainability assessment platform

  TCS launched a Supplier Sustainability Assessment Platform in FY 2022-23 to onboard top supply chain partners. In FY 2023-24, 17% of value chain partners (by spend) were successfully assessed for sustainability criteria. Green Procurement policy includes energy efficiency as a major procurement consideration. Supplier Code of Conduct (SCoC) is required as part of empanelment.

• Supply chain sustainability via Supplier Sustainability Assessment Platform

  TCS launched its Supplier Sustainability Assessment Platform in FY 2022-23. In FY 2024, 17% of value chain partners (by spend) were assessed for sustainability criteria. Plans to engage suppliers on sustainability assessments, training and awareness to improve their sustainability performance over time. Green Procurement Policy in place; all suppliers required to abide by TCS Supplier Code of Conduct and HSE requirements.

• Sustainability services for customers (Envirozone, Clever Energy, IP2)

  TCS built a portfolio of 200+ sustainability services and solutions including TCS Envirozone, TCS Clever Energy and IP2 (Intelligent Power Plant solution). These solutions help customers decarbonize operations, build net-zero pathways, embed circularity, address biodiversity loss. TCS partnered with Macquarie University to launch TCS GoZero Hub for energy transition, carbon management, nature positive future, circular economy and climate adaptation themes.

• Sustainability-as-a-service offerings to customers

  TCS built a suite of over 200 sustainability offerings across industry verticals. Proprietary solutions include TCS Clever Energy™ (IoT/ML/AI energy optimization), TCS Envirozone™, IP2™ (intelligent power plant), and an ESG framework for compliance reporting. Investments in research on green hydrogen, biofuels, and digital platforms to help customers reduce Scope 1/2/3 emissions. Launched TCS GoZero Hub in Sydney with Macquarie University focused on energy transition, carbon management, nature positive future, circular economy, and climate adaptation.

• Cloud migration for clients reduces customer Scope 2

  TCS' dedicated hyperscaler business units (AWS, Azure, Google Cloud) help clients migrate workloads from owned data centers to public cloud, reducing carbon footprint of those workloads. Over 110,000 hyperscaler-certified employees deliver this transformation.

• Sustainability solutions for clients (Clever Energy, Envirozone, IP2, ESG Integrator)

  TCS offers sustainability services including sustainability strategy design, innovation, consumer analytics and dashboards. IP-based solutions like TCS Clever Energy, Envirozone, IP2 and ESG Integration Solution help clients reduce their own emissions and accelerate sustainability journeys. Clients across retail, manufacturing, utilities and consumer goods engage TCS for these technology-led solutions.

• Cloud migration enabling customer decarbonization

  TCS' dedicated business units for AWS, Azure and Google Cloud help clients migrate workloads from owned data centers to hyperscaler clouds, significantly reducing their carbon footprint. TCS is one of the largest partners to each hyperscaler with over 110,000 cloud-certified employees. Solutions like TCS Clever Energy™, Envirozone™, IP2™ and ESG Integrator help customers measure and reduce their own emissions.

• Supply chain sustainability assessment platform

  In FY2023, TCS launched its Supplier Sustainability Assessment Platform and initiated onboarding of top supply chain partners. System-enabled database checks and risk profiling of top 80% suppliers by spend implemented. Of these, 20% completed sustainability assessment for environment criteria. Green Procurement Policy and Sustainable Supply Chain Policy guide responsible sourcing.

• Supply chain decarbonization via Supplier Code of Conduct and green procurement

  TCS' Sustainable Supply Chain Policy and Green Procurement Policy outline commitment to a more responsible supply chain. In FY2021, sustainability/safety/environmental requirements were integrated into the online vendor management system across selection, review and renewal stages. Responsible sourcing program encourages suppliers to go beyond 100% regulatory compliance.

• Customer enablement via TCS Clever Energy™ and Envirozone™

  TCS sees greater decarbonization potential by enabling customers than within its own boundary. Launched TCS Clever Energy™ — an IoT/AI/cloud digital-twin energy and emission management system for commercial/industrial customers. TCS Envirozone™ suite (O-Zone for responsible sourcing, iCloseLoop for circular packaging/recycling marketplace, Net-Zero for value-chain emissions accounting) supports customers' net-zero, circular economy and supply-chain sustainability journeys. Also planning strategic carbon-neutral operations partnerships with customers.