The Special Issue of Climate Policy “The Deep Decarbonization Pathways Project: Insights and Emerging Issues was published on Friday June 17th.

It consists of seven peer-reviewed articles, which discuss methodologies and results of the DDPP studies and set out directions to be followed for the next round of analysis.

The articles are grouped into the three following topics :

1/ Overarching methods and policy design

“The need for national deep decarbonization pathways for effective climate policy” discusses key methodological foundations of the DDPP, how these are established and work together, and how they contribute to climate policy.“Improving deep decarbonization modelling capacity for developed and developing country contexts” focuses on the modelling developments necessary to allow more countries to construct DDPs. These review the models currently being used, their strengths and weaknesses and the improvements that are required.

“Uncertainty management and the dynamic adjustment of deep decarbonization pathways” discusses, on the examples of French and German DDPP studies, how a multi-scenario approach can help build adaptive policy with management procedures and institutions to make DDP policy more resilient to uncertainties.

2/ Incorporation of domestic policy circumstance

A key tenet of DDPs is the centrality of national circumstances in emissions-reduction planning and their effect on policy. Two case studies are considered here, one from an OECD country and one from an emerging economy“Assessing decarbonization pathways and their implications for energy security policies in Japan” analyses the dual priorities of decarbonization and energy security from the Japanese perspective.“Achieving development and mitigation objectives through a decarbonization development pathway in South Africa” depicts policy to reallocate low-skilled labour from the GHG-intensive coal sector to less GHG-intensive sectors and thereby reduce emissions, improve employment and reduce inequality in South Africa.

3/ National analyses in a global context

A national scope, and more specifically one that matches jurisdictional powers to implement the Paris Agreement, is central to DDPP. But it does not guarantee the overall integrity of the final composite result, when considered from a global perspective.

“Exploring national decarbonization pathways and global energy trade flows: a multi-scale analysis  “ analyzes the DDPs of several major energy producing countries. It assesses the potential imbalances on global markets due to the bottom-up approach, and highlights key technological, economic and political details that DDPP can better capture that standard global integrated assessment models.