Scope 3: testing carbon exposure across the value chain
Value-chain emissions influence operating costs, regulation, customers and financing. Scenario testing shows where that exposure could bite.
Climate exposure and value-chain emissions can influence operating costs, regulatory exposure, customer expectations, financing considerations, resilience and enterprise value. For many organisations, the most significant part of that exposure sits outside their own operations.
Where to look first
The GHG Protocol’s Corporate Value Chain (Scope 3) Standard sets out the categories. Which of them matter most depends on sector and materiality, but priority areas often include:
- Purchased goods and services
- Capital goods
- Fuel- and energy-related activities
- Upstream and downstream transportation
- Waste generated in operations
- Use of sold products and end-of-life treatment
- Investments
From inventory to exposure
An emissions inventory is a starting point. The commercial question is what those emissions could cost. Scenario analysis helps: Revymax may model illustrative carbon-price sensitivities at $25, $50 and $100 per tonne of CO₂e to test how exposure could affect margins and valuation.
These are scenario assumptions for analysis, not forecasts or market-price claims. Their value is in showing which suppliers, categories and routes drive the exposure, and therefore where action pays back first.
Turning analysis into action
Typical next steps include completing a Scope 3 baseline, engaging high-emission suppliers, optimising freight networks and load factors, shifting modes where practical, and building circularity into high-waste categories. Each can be tracked as a KPI in a portfolio or management dashboard.
Weak Scope 3 data is itself a finding. Where value-chain exposure is material but not quantified, a time-bound baseline (for example within 90 days) belongs in the action plan.