Estimating Climate Impacts: A Guidebook on GHG Emissions Impact Analysis

Estimating Climate Impacts: A Guidebook on GHG Emissions Impact Analysis


C40 Cities Finance Facility

Type(s) of Tool

GuidelinesOperationalize sustainability principles, less specific than Benchmarks or Rating Systems.


Tools applicable to all sectors

Lifecycle Phase(s)

Project PlanningGeneral strategy for a project’s delivery is developed.

Open Source


Language Availability


Country of Origin


Date of Development





The guidebook elaborates on measuring and quantifying an infrastructure project’s GHG emissions/GHG emission reductions. Its main objectives are to describe relevant GHG accounting principles as well as related concepts and methods, outline the basic process for quantifying and reporting GHG impacts resulting from climate finance projects and describe the role of project-level impact analysis in climate finance project preparation.

Tool Outcome

Infrastructure professionals or city officials understand the importance of undertaking a project level analysis to facilitate the implementation of sustainable infrastructure projects and gained an understanding of how greenhouse gas (GHG) emission impacts should be considered and calculated (for instance by utilising C40’s Integrated Impacts Assessment Tool).

Sustainability Criteria

The project’s total GHG emission/emission reduction through sustainable infrastructure compared to a baseline scenario is considered.


Climate Change Mitigation