Pro6 minute read· Updated 5 November 2026
Stating climate impact numbers funders will trust
Present tCO2e, hectares and household figures with units, baselines, conservative assumptions and sources, kept consistent in one numbers master sheet.
Funders, investors and evaluators have seen too many climate claims that fell apart under scrutiny. A number without a unit, a baseline or a source now costs you credibility rather than earning it. This guide shows you how to state impact figures that survive due diligence: pick the right units, set baselines and counterfactuals, choose conservative assumptions, separate gross from net, refer to the right verification standards and keep every document in step with one numbers master sheet.
Inside this playbook
- What you need
- 1. Choose units a reviewer can check
- 2. Set a baseline and a counterfactual
- 3. Use conservative assumptions, and say so
- 4. Separate gross from net
- 5. Refer to the right verification standards
- 6. Avoid double counting
- 7. Give every number a source and a unit
- 8. Keep a numbers master sheet
- Checklist
- Further reading
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