Portfolio 20 · physical and reporting boundaries

AI energy and carbon scenario calculator

Start from measured active and idle power, preserve duty cycle, apply facility PUE once, and report location-based and market-based Scope 2 results side by side with uncertainty and service-unit intensity.

Decision this answers: How much IT and facility energy does the workload use, what is its location-based footprint, and how does a separately sourced market-based claim compare?

Scenario

Decision summary

IT energy

4032.00 kWhmeasured

Active plus idle workload energy before facility overhead.

[3]

Facility energy

4838.40 kWhexact-derived

IT energy multiplied by measured PUE exactly once.

[4]

Location-based emissions

1998.26 kgCO2epublished list

Published grid factor; uncertainty range 1599–2498 kgCO2e.

[2][1]

Market-based emissions

241.92 kgCO2emeasured

Separate contractual-method result; never subtracted from the physical result.

[1]

Direct-labeled result profile

IT energy Facility energy Location-based emissions Market-based emissions

The tables below are the accessible source of truth; bar lengths never carry identity alone.

Energy and emissions ledger

Energy and emissions ledger
Candidate	Quantity	Default	Evidence boundary	Reporting treatment	Evidence
Active IT energy	Power × active hours	4032 kWh	Measured whole-system power	Physical energy	measured[3]
Idle IT energy	Power × idle hours	0 kWh	Measured whole-system power	Physical energy	measured[3]
Facility overhead	IT × PUE	806 kWh	Measured facility ratio	Applied once	exact-derived[4]
Location-based Scope 2	Facility × grid factor	1998 kgCO2e	Published regional factor	Reported separately	published list[2][1]
Market-based Scope 2	Facility × instrument factor	242 kgCO2e	Contract-specific factor	Reported separately	measured[1]

Service-unit intensity

Service-unit intensity
Candidate	Numerator	Denominator	Default	Claim boundary	Evidence
Energy per request	Facility kWh	36 million requests	0.000134 kWh/request	No avoided-energy claim	exact-derived[3]
Location emissions per request	Location kgCO2e	36 million requests	0.000056 kgCO2e/request	No offset subtraction	exact-derived[1]

Official surface versus this site

GHG Protocol Scope 2 Guidance

Use the official surface to confirm native prices, counting rules, limits, and product eligibility.

This offline workbench

The protocol defines the reporting methods. This page traces workload power and duty-cycle evidence through PUE and grid factors, refuses unknown required inputs, and exposes absolute and per-service-unit results without claiming avoided emissions.

Sources and methodology

Every result-affecting reference is visible here without JavaScript and is retained in the JSON export.

[1] Scope 2 Guidance

Authority: GHG Protocol
Native identifier: GHG Protocol Scope 2 Guidance
Unit: location- and market-based kgCO2e
Evidence: exact-derived
As of: 2026-08-01
Retrieved: 2026-08-01
Freshness: reference
Normalization: The two reporting methods are calculated and shown independently; contractual claims never erase location-based emissions.

Open the authoritative source

[2] Google Cloud region carbon data

Authority: Google Cloud
Native identifier: us-central1 2024 grid carbon intensity
Unit: gCO2e/kWh
Evidence: published list
As of: 2026-08-01
Retrieved: 2026-08-01
Freshness: reference
Normalization: The published 2024 us-central1 grid intensity is used as an editable location-based scenario factor.

Open the authoritative source

[3] MLPerf Power Measurement

Authority: MLCommons
Native identifier: MLPerf Power
Unit: watts and energy
Evidence: measured
As of: 2026-08-01
Retrieved: 2026-08-01
Freshness: reference
Normalization: Use compatible whole-system measurement; accelerator TDP is not silently substituted for workload power.

Open the authoritative source

[4] Power usage effectiveness

Authority: The Green Grid
Native identifier: PUE metric
Unit: facility energy / IT energy
Evidence: measured
As of: 2026-08-01
Retrieved: 2026-08-01
Freshness: reference
Normalization: PUE is explicit, evidence-bearing, and applied exactly once.

Open the authoritative source

Limits and non-claims

Unknown required power, PUE, or location intensity fails closed; zero is a valid measurement only when explicitly supplied.
Embodied carbon, water, refrigerants, and Scope 3 are out of this operational Scope 2 scenario and must not be inferred from it.
No offset, renewable-energy certificate, or avoided-emissions claim is subtracted from physical energy or location-based emissions.