Microsoft

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.

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• · berkeley_voluntary_registry
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• · Puro.earth Registry
• · CarbonPlan OffsetsDB

Microsoft sources 100% of its electricity from renewable sources globally, achieved and maintained in FY23. The primary mechanism is long-term power purchase agreements (PPAs and virtual PPAs) that Microsoft views as driving new, additional renewable capacity — with a contracted portfolio exceeding 19.8 GW across 21 countries as of 2023. These are supplemented by unbundled energy attribute certificates (RECs, GOs, REGOs, I-RECs, LGCs, J-Credits, NFCs, TIGR, GEC, NZECS) in markets where direct PPAs are not yet feasible. Microsoft is targeting carbon-free PPAs to cover 100% of carbon-emitting electricity consumed by datacenters, buildings and campuses by 2025. The firm is a RE100 signatory and this target (Low1) is part of its SBTi commitment. In FY23, 22,676,208 MWh (94.5% of total energy) was from renewable sources, with 3,341 MWh from on-site solar generation.

In FY23, Microsoft contracted 5,015,019 metric tons of carbon removal to be retired over next 15 years, retiring 605,354 tCO2e in-year. Building a balanced portfolio across low, medium, and high durability solutions. Key 2023 deals: Mombak (Amazon reforestation), Orsted (BECCS in Europe — adding carbon capture to existing heat/power plant with geological storage), Heirloom (direct air capture from limestone, up to 315K tons over multi-year), and novel pathways with UNDO and Lithos for enhanced rock weathering. Target is to remove more carbon than emitted by 2030 and remove all historical operational emissions by 2050. Contracts signed as of Dec 2023 will provide ~875,000 tCO2e toward the 2030 goal of >5M tons/year.

• Low-carbon concrete and embodied carbon in datacenter construction

  To address Cat 2 (capital goods, 38.24% of total emissions), Microsoft pilots net-negative embodied carbon limestone-alternative concrete derived from algae cultivation, achieving ~65% embodied carbon reduction vs conventional. 37 datacenters meet LEED Gold globally. New construction standards prohibit combustion for daily use in new offices and require high-efficiency electric kitchens/HVAC, non-fossil backup power. Using Building Transparency's EC3 tool, shifted to process-based methodology with third-party verified data for tracking embodied carbon.

• Cloud hardware circularity — 89.4% server reuse/recycle

  Reuse and recycle rates for servers and components reached 89.4% in FY23 (target 90% by 2025). Six Circular Centers operational (Amsterdam, Dublin, Boydton, Singapore, plus new Quincy and Chicago in 2023); two more planned for England/Australia. Developed patent-pending IDARS (Intelligent Disposition and Routing System) using Dynamics 365 to optimize disposition path for every cloud hardware part. Microsoft servers found to be 86% recyclable vs 67% industry average. New Sustainable Rack Packaging system estimated to divert 100,000 metric tons of waste from landfill.

• Device circularity, repairability and energy efficiency

  Single-use plastic in product packaging reduced from 5.7% (FY20) to 2.7% (FY23); packaging recyclability at 93.9% (target 100% by 2030); post-consumer recycled content in device packaging at 53.8%. Surface Thunderbolt 4 Dock uses 20% ocean-bound plastic. Expanded repairable Surface portfolio (Go 4, Laptop Studio 2, Laptop Go 3). Xbox is first carbon-aware gaming console — schedules updates when grid carbon intensity is low; Shutdown mode cuts power 20x vs Sleep. Surface Laptop Studio 2 uses 65% less energy than ENERGY STAR limit.

• Datacenter energy efficiency and electrification of ground fleet

  Datacenters account for the vast majority of Microsoft's Scope 1 and location-based Scope 2 emissions (Scope 1: 87,154 tCO2e; Scope 2 location-based: 7,779,660 tCO2e in FY23). Microsoft pursues energy efficiency improvements to reduce the number of datacenters needed overall and is electrifying its global campus operations fleet by 2030. In FY23, energy efficiency and electrification measures delivered ~4,680 tCO2e of Scope 1+2 reductions, while company car fleet average emissions fell from 95.72 g/km (FY22) to 81.65 g/km (FY23). Microsoft also operates on-site solar (560-kW canopy at LinkedIn Omaha providing ~20% of building electricity) and has deployed sustainable aviation fuel certificates (SAFc) contracts with United Airlines, Alaska Airlines, and IAG to reduce air travel emissions.

• Business travel and employee commuting reduction (including SAF procurement)

  Business travel (Cat 6) was 124,000 tCO2e in FY23, down sharply from the FY20 base of 385,000 tCO2e. Employee commuting (Cat 7) was 187,000 tCO2e vs 317,000 tCO2e at baseline. Microsoft applies sustainable aviation fuel certificates (SAFc) to reduce air travel emissions on a well-to-tank and tank-to-wake basis, having contracted SAFc with United Airlines, Alaska Airlines, and IAG in FY23. Microsoft also maintains carbon neutrality for its Scope 1 + market-based Scope 2 + business air travel boundary (Abs4, achieved and maintained since FY22) through a combination of energy efficiency, renewable electricity procurement, and carbon removal offsets.

• Datacenter efficiency — PUE 1.12, low-power server states, oversubscription

  Datacenters delivered a design rating of 1.12 PUE in FY23. Deployed low-power server states across ~1 million servers (up from a few thousand in 2022), reducing unallocated server energy use up to 25%. Power-aware workload allocation and SLA-driven harvesting cut datacenter power infrastructure ~7% in 2023. CPU oversubscription reduced Azure hardware needs ~1.5% (3x improvement vs 2022). New datacenters designed to consume zero water for cooling on AI workloads.

• Upstream logistics decarbonisation via GLEC Framework and mode shift from air to ocean

  Scope 3 Cat 4 (upstream transportation and distribution) was 305,000 tCO2e in FY23, up from 243,000 tCO2e at the FY20 base. As of FY23, Microsoft adopts the GLEC Framework for its Devices and Cloud business groups to improve accuracy. In addition, Microsoft implemented a mode-shift initiative from air to ocean freight, delivering an estimated 95,000 tCO2e annual savings. SAFc are also applied to air cargo emissions (Cat 4). 97% of Cat 4 emissions are calculated using supplier data.

• Supplier engagement — 76.5% of emissions from suppliers

  76.5% of FY23 emissions originated from suppliers. Microsoft piloted ESG value chain solution in Sustainability Manager to collect granular supplier emissions. Partnered with 3Degrees to launch Supplier REach portal helping smaller suppliers procure carbon-free electricity. 59 suppliers transitioned to renewable energy in FY23 (six to 100%), contributing 105,000 mtCO2e avoidance. New requirement announced: select scale, high-volume suppliers must use 100% carbon-free electricity for Microsoft-delivered goods and services by 2030. 99.4% of suppliers responded to CDP climate change questionnaire in 2023.

• Supply chain decarbonisation via Supplier Code of Conduct and data quality improvement

  Scope 3 Cat 1 (purchased goods, $5.6M tCO2e) and Cat 2 (capital goods, $5.9M tCO2e) dominate Microsoft's value chain footprint. Microsoft's strategy has five prongs: (1) improving measurement through LCA coefficients and supplier-reported data (51% of Cat 1 from supplier data, 70% Cat 2); (2) increasing efficiency by reducing datacenters needed and reimagining circularity of cloud hardware; (3) forging partnerships; (4) building markets through low-carbon materials procurement; and (5) advocating for policy change. In FY23, supplier emissions reductions driven by the Supplier Code of Conduct requirements delivered an estimated 638,000 tCO2e annual savings in Cat 2. The SBTi-validated Int1 target requires a 30% Scope 3 intensity reduction per USD revenue by 2030 — 97.9% achieved by FY23.

• Use-of-sold products decarbonisation via device energy efficiency and renewable electricity grids

  Scope 3 Cat 11 (use of sold products) was 2,158,000 tCO2e in FY23, down from a FY20 base of 2,600,000 tCO2e. Microsoft measures this via telemetry from Xbox consoles and Surface devices currently in use by end-users. The reduction strategy focuses on improving energy efficiency of devices, increasing the share of renewable electricity in customer grids (to reduce location-based emission factors), and the circular reuse of hardware. Third-party devices running Microsoft software are currently outside the carbon commitment scope. Deloitte provides limited assurance on this metric under management's criteria (gross emissions and gross emissions net of renewable electricity).

• Sustainable aviation fuel and logistics decarbonization

  Signed 10-year contract with World Energy for SAF certificates aiming to replace 43.7M gallons of fossil jet fuel; co-funded large-scale SAF purchase with International Airlines Group; joined Sustainable Aviation Buyers Alliance (SABA) and Roundtable on Sustainable Biomaterials. Cloud Logistics applied GLEC framework, saving over 90,000 mtCO2e via shifting cargo to more carbon-efficient transport, consolidation, network design. Launched initiative to build first electric interstate trucking corridor in the US.