Microsoft Corporation

Cloud Provider

Legal name: Microsoft Corporation · HQ: US · Public (MSFT) · Founded 1975

Cloud provider and primary infrastructure partner for OpenAI. Committed to carbon negative by 2030; significant AI workload growth has complicated the emissions trajectory and increased absolute water consumption.

Disclosure Quality

Score

55/100

Transparency Grade

T-3

partial disclosure

Grades run T-1 (most transparent) to T-5 (least transparent).

Red flags identified (2)

  • RF-01 · Total energy consumption not disclosed
  • RF-04 · AI-specific energy use not disclosed

See the disclosure audit below for details.

Fiscal year 2023. Score computed from OpenButterfly T1–T6 disclosure framework audit. Confidence tier: C (Estimated, Documented Method).

Environmental Metrics

Fiscal year 2025. Each metric is shown at its most recent available year; rows from a different year are marked.

Confidence tiers: A measured and verified · B company-reported · C documented estimate · D uncertain estimate · E modeled · ND not disclosed.

Total Energy Consumption

35.1 TWh

≈ the annual electricity use of 3.3 million US homes

method: known_capacity_model

Source: OpenButterfly pipeline

C

AI-Specific EnergyFY 2023

Not DisclosedNDchecked 2025-05-23

AI-specific energy consumption not disclosed.

ND

Scope 1 Emissions

193 kt CO₂e

≈ the annual emissions of 42,000 passenger cars

method: scope1_ratio_model

Source: OpenButterfly pipeline

E

Scope 2 Emissions (market-based)

643 kt CO₂e

≈ the annual emissions of 140,000 passenger cars

method: grid_carbon_model

Source: OpenButterfly pipeline

D

Scope 3 Emissions

19.58 Mt CO₂e

≈ the annual emissions of 4.3 million passenger cars

method: scope3_ratio_model

Source: OpenButterfly pipeline

E

Water Withdrawal

45.1 GL

≈ 18,000 Olympic swimming pools of water

method: wue_model

Source: OpenButterfly pipeline

D

Property-Line Noise (estimated)FY 2026

~56.2 dBA at property line

method: cooling_load_noise_model

Source: OpenButterfly pipeline

E

Disclosure Audit

Show 5 disclosure checks (T1–T6 framework)
T1.1

Total electricity consumption disclosed

Total MWh not published; only percentage renewable coverage.

RF-01 (Total energy consumption not disclosed)

Not Disclosed
T2.1

Scope 1 GHG emissions disclosed

116,000 tCO2e disclosed.

Fully Disclosed
T3.1

Total water withdrawal disclosed

6,400,000 ML disclosed.

Fully Disclosed
T1.2

AI-specific energy consumption disclosed

AI workload energy not separately reported despite OpenAI partnership scale.

RF-04 (AI-specific energy use not disclosed)

Not Disclosed
T6.1

GHG accounting methodology documented

GHG Protocol referenced; third-party assurance by Bureau Veritas.

Fully Disclosed

Sources

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