Sustainability Lab
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🧪 Sustainability Lab Experiment #004

CommuteCarbon

Calculate greenhouse-gas emissions from employee commuting and remote work (GHG Protocol Scope 3, Category 7) using bundled DEFRA/DESNZ 2026 well-to-wheel factors — with a full audit trail of every factor applied.

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Duration

10–15 min

Difficulty

Intermediate

Category

Climate & Carbon Accounting

Learning objectives

  • Understand what falls inside GHG Protocol Scope 3 Category 7 (Employee Commuting)
  • Apply distance-based emission factors per transport mode
  • Separate tank-to-wheel combustion from well-to-tank upstream emissions
  • Estimate teleworking emissions from home electricity and heating use
  • Read a calculation audit trail and challenge the assumptions behind it

Learning outcomes

  • A complete commuting emissions estimate for a workforce, ready to report
  • Confidence choosing survey-based vs. average-data commuting methods
  • A working feel for the TTW + WTT = WTW factor split
  • Awareness of how hybrid-working policy changes the footprint

Related sustainability concepts

The bigger picture

Scope 3 Category 7Employee commutingTeleworking emissionsDistance-based methodDEFRA/DESNZ factorsWell-to-wheel (TTW + WTT)

Related research

  • · Framing double materiality for practitioners
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Related Knowledge Studio

  • · Visual explainer: what is a carbon footprint?
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Related Academy module

  • · Foundations of carbon accounting (coming soon)
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Related future experiments

  • Business Travel Calculator
  • Hybrid-work policy simulator

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