Photo by Robert Bye on Unsplash
Overview
Stage 4 guides the user in conducting an ex-post assessment (step 4.1) on whether the circular economy intervention achieved the expected results as per the ex-ante assessment in step 2.2, such as reduced GHG emissions in a cost-effective manner. This stage also describes reporting the impact of circular economy interventions under the ETF of the Paris Agreement, specifically BTRs with a view to inform the international community of the progress of NDC implementation (step 4.2).
Sectoral examples for Stage 4

Food loss and waste
Policymakers can assess the policy effectiveness and impact on food loss and waste hotspots by comparing progress to the baseline identified in stage 1. Progress can then contribute towards the NDC target by reporting the impact in the BTR and SDG 12.3 and 12.1 reporting.
The full case for food loss and waste can be found in Chapter 4 of the user guide.

Buildings and construction
Policymakers can assess the policy effectiveness and impact on unsustainable hotspots in buildings and construction by comparing progress to the baseline identified in stage 1 and using the ex-ante tools from stage 2 for ex-post assessment. Progress can then contribute towards the NDC target by reporting the impact in the BTR and SDG 12.1.1 reporting.
The full case for food loss and waste can be found in Chapter 4 of the user guide.
Tools and resources for the sectoral examples can found in the Resource Library.

