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Climate Commitments of Subnational Actors and Business

A Qunatitative Assessment of their Emission Reduction Impact

image of Climate Commitments of Subnational Actors and Business

This report present a quantitative assessment of the total greenhouse gas (GHG) emissions mitigation impact in 2020 of current non-state climate action. Its focus is initiatives with the potential to be large scale. The report predicts that over the next few years, new targets for the post 2020 period will be agreed by existing and new members of initiatives. Thus any quantification now for post 2020 would likely lead to an underestimate of the contribution from initiatives. The total calculated impact represents the GHG emission reduction and takes into account overlaps between initiatives. It also estimates to what extent the emission reductions are additional to those achieved through climate action of national governments.

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Conclusion

Our study shows that committed action from existing non-state climate initiatives involving cities, regions, companies and sectors could deliver emission savings of 2.9 GtCO2e, with a range of 2.5–3.3 GtCO2e, additional to what will be delivered by currently implemented policies and measures. For comparison, the impact of government pledges in 2020 is 5–7 GtCO2e. We estimate that the overlap between the impact of pledges and the impact of nonstate commitments is less than 1 GtCO2e. These reductions are a contribution in their own right to closing the gap of 8–10 GtCO2e between global GHG emission levels consistent with the 2 ˚C target and the emission levels expected if country pledge cases are implemented. However, these non-state initiatives can also play a role in raising the level of ambition of governments by demonstrating what is possible with concerted action.

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