NAVIGATE-ENGAGE Summer School 2023

December 16, 2023

As climate policymaking becomes increasingly informed by model simulations, it becomes crucial for researchers to better understand how climate-energy-economy models work, how they are used, and how to inform policymaking through their output. The NAVIGATE and ENGAGE projects, funded by the European Union’s Horizon 2020 research and innovation programme, are therefore launching a Summer School aimed at providing advanced training for young international scholars, advanced PhD students and early postdoc fellows, working on integrated assessment models.

ENGAGE Stakeholder Dialogue (EU)

October 18, 2022

Finally, after almost two years of online meetings, the ENGAGE project organized a face-to-face stakeholder dialogue. Hosted by PBL in the Hague, the meeting was attended by 23 stakeholders (of which four joined online) and supported by 10 members of the project team for a total of 37 participants.

EU Stakeholder breakout group discussion of in-person participants

In an opening warm-up round, participants were asked to briefly voice their expectations for the upcoming UNFCCC Conference of Parties in Egypt. Many said that they had low expectations and others expressed their hopes for raising ambition and real commitments, a focus on climate justice, getting major emitters on board and science remaining the guiding force.

The first session focused on the current hot topic of Energy Security. Alessia de Vita (E3 Modelling) presented results of modelling the RePowerEU strategy, comparing the results with a reference scenario (2019) and the Fit for 55 (2021) strategy.  The participants then discussed the results that were presented, emphasizing topics such as the need to accelerate the supply of renewable energy and to reduce demand through efficiency measures in a circular economy, the different starting points in EU countries and the implications of demand for materials from outside the EU. A common topic across the groups was the risk that short-term strategies would not be aligned with long-term goals and the challenge to improve energy security while also decarbonizing. The importance of behavioural change and also of avoiding lock-in effects with a switch to liquid natural gas in the short-term were also common across discussion groups.

The second session focused on an ongoing stream of work in the ENGAGE project: to develop a website and data dashboard, the Climate Solutions Explorer (CSE). The website will enable visualization and comparison of spatial climate impacts data. The National Dashboard pages are designed to enable comparison of mitigation pathways and (avoided) climate impacts. The Net Zero Stories section of the website will include analysis of trade-offs, co-benefits and avoided impacts from the ENGAGE national modelling partners. These stories highlight national perspectives on the pathways to net-zero and discuss important co-benefits and trade-offs for key sectors such as air pollution & health, water, energy security, and land & biodiversity. Ed Byers (IIASA) presented the current status of the CSE to get feedback on the design and content.  The participants showed strong interest in this tool for disseminating results from the ENGAGE project and provided a large number of ideas both for enhancing the functionality of the website and also the qualitative and quantitative content. The participants emphasized that the language used should be accessible to a broad range of potential users. They suggested that the use of narratives is attractive and that more stories could be added. It will be important, according to the stakeholders, to provide more examples of the benefits of climate change mitigation, while ensuring that the messages conveyed are consistent across the platform.  This input from stakeholders comes just at the right time in the development of the CSE!

In the final session, the meeting turned to the topic of effort sharing. Zoi Vrontisi (E3 Modelling) presented results from the ENGAGE project based on including different effort-sharing mechanisms in integrated assessment models. The modelling results show that if the goal is to keep the global temperature increase below 2oC, there is little difference in terms of GDP impacts between a cost-optimal solution and other effort-sharing mechanisms. This was followed by a short presentation prepared by Silvia Pianta (CMCC) on the results of surveys on preferences for the different effort-sharing mechanisms carried out online and during several stakeholder workshops in the ENGAGE project. The group discussions after the presentations focused on issues and questions raised by the first presentation. One group discussed new ideas for effort sharing. These included: go beyond a monetary (GDP) and nation-based approach to look at social and environmental capital; effort sharing should focus on private corporations; and a per capita based approach in which the effort is made by the rich. Another group discussed the projected costs of effort sharing, noting that the cost calculations should also include the co-benefits, such as reduction of air pollution or increase of employment and that the choice of reference scenario matters when costs of effort sharing are calculated. A third group discussed the short-term feasibility of implementing effort sharing mechanisms, pointing out that it is important to consider “feasibility for whom?” In the short term, coalitions could be a feasible way forward and in the private sector there could be opportunities for effort sharing.

After an intensive day of presentations and discussions, Bas van Ruijven (IIASA) closed the meeting by thanking all participants for the very productive meeting that will without question inspire further work in the last year of the ENGAGE project.

EU Pavilion Side Event at COP 27: Bridging the gap to the Paris Agreement objectives

November 15, 2022

ENGAGE Partners and the Institut du Développement Durable et des Relations Internationales feature opportunities for international collaboration to support enhanced national ambition.

This event presents a globally comprehensive multi-model stocktake on the gap between current pledges and the Paris Agreement goals. It then presents several scenarios to ratchet up ambition of the NDCs and long-term goals, as well as the global enablers for eight major economies to implement deep decarbonisation pathways in their countries, according to in-country analyses and experts. These strategies and enablers constitute poignant themes for global climate discussions, including the GST.


  • Introduction by Vicky Pollard, EC DG Clima (5 min) 
  • Presentation on current pledges and the emission gap, by Bas van Ruijven, IIASA (10 min) 
  • Presentation of scenarios to close the emission gap, by Isabela Schmidt Tagomori, PBL (10 min) 
  • Presentation on the global narratives, by Johannes Svensson, IDDRI (10 min) 
  • Presentation of the global enablers emerging from a country analysis (Brazil), by Emilio Lèbre la Rovere, COPPE (10 min) 
  • Q&A (15 min) 

Visit our Resources for Policymakers page to read our latest policy briefs.

ENGAGE Stakeholder Dialogue (Latin America/Brazil)

April 19-20, 2022

The ENGAGE series of stakeholder dialogues continued in April 2022 with an online meeting on decarbonization pathways in Latin America and Brazil. The meeting was organized in 4 sessions and discussed modelling results, the feasibility of rapid decarbonization and a broad range of issues related to burden-sharing. With a total of 53 stakeholders and ENGAGE partners from all work packages, the presentations, discussions and surveys carried out during the meeting brought up key issues with respect to the achievement of decarbonization goals that are also relevant for future research. 

Starting with a short presentation by Joeri Rogelj about the term “net-zero” and the importance of being clear about whether we are talking about “net-zero carbon emissions” or “net-zero greenhouse gas emissions”, the first session then focused on modelling results on decarbonization pathways in Latin America and Brazil. The focus of the presentation by Roberto Schaeffer was a scenario in which global CO2 emissions achieve net-zero in 2060. This allows for higher CO2 emissions globally until 2050 but thereafter carbon dioxide removal technologies are required if the Paris goals are to be achieved. The modeling results, based on a global and national (for Brazil) “least-cost” logic, show, however, that while global emissions reach net-zero CO2 in 2060, Latin America reaches net-zero CO2 emissions by 2040. This is achieved, for example, through a very large increase in the share of renewable energy in total primary energy supply.  

These results were discussed in breakout groups. Key points raised in these lively discussions were: 

  • Extra efforts and political will are necessary in order to develop consistent climate policy, regulatory advances and long-term strategies. Each country in Latin America faces different challenges in this respect. Political will would be strengthened, if there were a critical mass of people asking for change. For implementation of decarbonization pathways, access to information, data and good practices is needed. International cooperation, finance and responsible carbon markets would support the transformation to net-zero CO2 emissions. Furthermore, it would be important to align national and subnational initiatives, as well as public and private (civil society and business) initiatives.  
  • There are many reasons why a systems approach to tackling the challenges of decarbonization will be necessary. For example, a major transformation of the food system in Europe would have implications for food production systems in Brazil. Similarly, decarbonization of industry in Latin America depends in some sectors on international demand. The necessary sustainable transformation of land use also requires a systems approach. 
  • In Latin America agriculture is a major sector of the economy, causing high emissions levels through, for example, livestock herding and deforestation. In the short term, there is an absence of policies to deal with these emissions. 
  • In many cases, the necessary technology is available but implementation and upscaling are needed. The upscaling is constrained by a number of factors, including the attitudes of managers in business and industry and of government decision-makers, the suitability of buildings for solar panels, the hilly terrain making it difficult to switch to electric vehicles. While a greater shift to biofuels would support decarbonization, transport does not receive significant attention in Latin America. 

Session 2 started with a presentation by Aleh Cherp on empirical studies of the feasibility of decarbonization pathways. These studies look at historical and other evidence to see whether transitions required to meet climate goals are feasible. The empirical evidence shows, for example, that the rate of decline of fossil fuel use required for the years between 2025 and 2035 in some decarbonization pathways is unprecedented. The empirical evidence not only provides indications of the potential feasibility of decarbonization pathways, it also provides insights into the mechanism of transitions. After the presentation, breakout groups reflected on what they heard and discussed the particular challenges that Latin American countries face in meeting climate goals. The participants noted the importance of feasibility assessments to support discussions between researchers, civil society and other stakeholders.  Further key points were: 

  • For Brazil, the presentation shows that feasibility of decarbonization has increased; parts of the needed transition are happening automatically, however awareness of the problem and challenges is still not enough and illegal deforestation continues on a large scale.  
  • Mobilization of finance is needed to develop the biofuel/biomass/food industry in Latin America. Often incentives, external political pressure and knowledge exchange on sustainable practices are the key factors that foster sustainable development in small countries.    
  • Trade could be used to increase the feasibility of sustainable land use, if there were mandatory certification schemes, for example, to ensure that products for export were produced without deforestation. 
  • Engineered solutions require long-term strategies that oftentimes cannot be provided by autocratic regimes. 
  • In Latin America, it is important to recognize the historical importance of social movements and social engagement in pushing for actual changes. The implementation of ambitious decarbonization pathways is less a technical issue and more a social and political issue. Public and political perspectives often differ. 
  • The Russian-Ukrainian war may have an impact on feasibility due to the increase of the price of oil. If the prices remain high, there could be reluctance to move away from oil and gas. 

Session 3 of the workshop focused on the multidimensional feasibility assessment of decarbonization pathways. Elina Brutschin presented the online tool developed in the ENGAGE project to make such assessments and to enable a more interactive engagement with scenarios. The tool is based on an operational framework that allows a systematic assessment and comparison of scenarios along key dimensions of feasibility identified in the 2018 IPCC Special Report. The dimensions of feasibility considered in this assessment tool comprise geophysical (e.g., the potential availability of solar or wind energy), technological (e.g., the availability of renewable energy technologies), economic (e.g., the carbon price or stranded assets), socio-cultural (e.g., dietary change) and institutional (e.g., institutional capacity to implement rapid decarbonization) concerns. Rather than making claims about which pathways are feasible or not feasible in the real world, the framework allows the identification of trade-offs over time and across dimensions. The tool allows systematic mapping out of areas of concern and highlights the enabling factors that can mitigate them. After the presentation, Elina Brutschin presented a survey in which participants were asked to give their opinion on the levels of transformation that could be achieved in Latin America by 2030 for 4 key indicators:  the share of non-biomass renewables in electricity generation (%); the share of Carbon Capture and Storage (CCS) technologies in total electricity generation (%), carbon price levels, and final energy demand levels. The results of the survey were used in the online multidimensional assessment tool to show participants how their assessment affects the feasibility evaluation of decarbonization pathways to achieve the Paris 1.5o C goal. 

The final session of the workshop focused on how the challenges of rapid decarbonization can be shared in a fair way. Zoi Vrontisi presented the different principles (see Table 1) that can be used to share the challenges: grandfathering, per capita convergence, immediate per capita convergence, greenhouse development rights and the ability to pay. These principles can be implemented through policies on the domestic or international level or in a hybrid scheme combining action at both levels. The presentation showed examples of greenhouse gas emission pathways in different regions using the different principles. Depending on the equity principle chosen, the greenhouse gas reduction effort, economic implications and carbon price differ across regions.  After the presentation, Silvia Pianta introduced a short survey, in which participants were asked to select their preferred equity principle. Since the survey also showed some of the modelled consequences of the selected principle, it was also possible to change the selection. The results showed a strong preference for Greenhouse Development Rights, which is based on the ethical principle of safeguarding people’s right to reach a dignified level of sustainable human development. The survey and presentation led to further discussion on important points of relevance for further research and for policies to share the challenges of transformation to a low-carbon economy: 

  • The terminology must be clear and used carefully. “Burden-sharing” has a negative connotation. The principles are not necessarily about equity, so perhaps the term “ethical principles” might be better. 
  • A rights-based approach anchored in law provides many opportunities. However, there is concern about the conditionalities applied to financing for developing countries. 
  • When thinking about Greenhouse Development Rights, care must be taken not to assume that development should take place as it has in the past. The paradigm of “development” has to change, to align with the global climate and sustainable development goals. 

Table 1. Description of climate mitigation effort sharing principles. 

Exploring The Outcomes And Consequences Of COP 26

February 1, 2022

In an online meeting on January 27th, the ENGAGE project and a broad group of stakeholders from across the world explored what happened at the UNFCCC Conference of Parties (COP26) in Glasgow and what this means for research.
Inspired by the opening comments made by a distinguished panel composed of representatives from the UNFCCC secretariat, the European Commission, Brazil, India and the USA, followed by two presentations from the ENGAGE project, the participants discussed the research needs and suggested the following priorities:
Research is required to support increasing the ambition of Nationally Determined Contributions (NDCs) and in particular to support the urgently needed implementation of proposed emissions reductions. This includes providing transparent and regularly updated tracking of how pledges (at the national and subnational levels) evolve over time (e.g., countries implementing or giving up on pledges). More research is needed on which countries and sectors are setting goals but not implementing them, and on other countries that may not have pledges yet but have been quite effective in reducing emissions in the short term.

  • Regarding the global reporting and stock take, research can make an invaluable contribution in demonstrating how to make them forward-thinking and transformative.
  • Considerable research is still needed in the area of finance, including collaborative financing mechanisms and determining the finance needs for developing countries.
  • Research on climate change solutions should pay much more attention to social change and alternative forms of economy (e.g., sharing, degrowth, solidarity, Beyond GDP, green economy).
  • Research must continue on the topics of equity, effort-sharing and environmental justice. What are the implications of these considerations for 2030? How can country pledges be reconciled with equity considerations and effort-sharing?
  • There is an important need for better coverage of non-CO2 greenhouse gases in research.
  • More research is needed to help some developing countries that hesitate to adopt low-carbon technologies, because they fear that these technologies may not perform, or because they do not have the required technical skills or the resources required. There is also the issue of employment, especially in developing countries, due to decarbonization of the power sector.
  • From a modelling perspective: the NDCs needs to be consistent with long-term strategies. Models could be used to see whether there are policies that are less stringent until 2030 and then lead to faster emissions reductions. Is this feasible at the country level? A range of questions related to modelling require answers, e.g., How to capture technology-based mitigation solutions, for example, more biomass carbon capture and storage (CCS) and gas CCS and how models depict gas storage capability levels. How can models be used to carry out a reality check on what is represented in terms of updated costs and stability requirements? How can the demand system be changed and what is a feasible pace for energy demand reductions on a country level? How can differentiated governance levels be included in models?

The online meeting showed that research can play a very significant role over the next few years in shaping responses to climate change. Clear and transparent reporting of the results of scientific research will be needed and policy making must be informed in a holistic manner. This includes communication about the costs of inaction and clearly showing the repercussions of not sticking to the agreed goals. It will also be important to translate model results into more tangible near-term strategies that can better inform policy makers. The discussions also highlighted the continuing need for capacity building so that policy makers understand the research results, and so that scientists can respond more effectively to decision-makers’ and societal needs. Finally, it is essential to support developing countries through knowledge transfer, capacity building, research and development and building infrastructure.

A downloadable version of the above article is available on our Resources for Policymakers page.

Contribute to ENGAGE Research: 5-Minute Survey on Ethical principles and effort sharing mechanisms

February 7, 2022

The ENGAGE research project has developed a 5-minute online elicitation survey to assess perspectives on ethical principles and effort sharing mechanisms for climate change mitigation strategies.

The survey is available here.

The ENGAGE Consortium would really appreciate further distribution of the survey among your network.

The survey results will inform research on global climate mitigation strategies and future climate mitigation modeling efforts.

The survey data will be anonymized and employed exclusively for research purposes.

For more information, please read the brief study description below:

European Commission report on climate action in a post-covid-19 world

Monday, December 6, 2021

As the COVID-19 crisis hit at the beginning stages of the ENGAGE project, the consortium was able to integrate the potential game-changing nature of the crisis into the assessment of multidimensional feasibility and new emissions pathways. As such these contributions and insights were featured in a novel European Commission publication, Climate Action in the Post-COVID-19 World.

ENGAGE contribution, “From COVID-19 shock to green recovery” addressed: power sector dynamics, showing that there was reduced coal use in the power sector during the pandemic, results from policymaker stakeholder surveys, highlighting the expectation that the pandemic will increase the commitment to polices related to low-carbon energy and transport sectors, and how low-energy demand would reduce the costs of meeting the Paris Agreement climate targets.

Contributions included key partners from the International Institute for Applied Systems Analysis (IIASA), Potsdam Institute for Climate Impact Research (PIK), RFF-CMCC European Instute on Economics and the Environment (EIEE), and Central European University (CEU).

Visit the European Commission website for more.


November 12, 2021

United Action

The 26th United Nations Climate change Conference of the Parties (COP 26) took place in Glasgow from the 31st October-12th November 2021. The summit brought 120 global leaders and other parties together to accelerate action towards the goals of the Paris Agreement. ENGAGE Partners were fortunate to co-organize and participate in three side event sessions at this year’s COP 26 event, highlighting the results of the project and raising awareness to policy makers and relevant stakeholders.

ENGAGE insights for a global effort

Kicking off ENGAGE’s presence on November 1, 2021, were Elina Brutschin and Bas van Ruijven at the EU Pavilion. Brutschin discussed feasibility and ENGAGE results at the session, “What does transforming the energy system really mean? Adaptation, resilience & transition challenges” and van Ruijven followed thereafter discussing net-zero futures and climate change impacts at, “The Journey from Scientific Insights to Societal Action.

Later that week, an international group of ENGAGE partners, The Energy and Resources Institute (TERI), India, the International Institute for Applied systems Analysis (IIASA), Austria, and the Netherlands Environmental Assessment Agency (PBL) joined together with the New Energy and Industrial Technology Development Organization (NEDO), Japan, to organize and host a UNFCCC Side-Event on transitioning towards low-carbon and climate resilient pathways by 2050. At this side-event, the presenters showcased different pathways for achieving a just, low-carbon, and climate-resilient transition by 2050. This included key considerations for addressing mitigation and adaptation challenges, such as technology innovations, energy use, and emissions to ratchet up climate ambitions. The hosts were honored to feature Minister George Heyman (British Columbia’s Minister of Environment and Climate Change) who discussed the Roadmap to a Clean British Columbia to 2030 providing fruitful insights about the actions Canada and British Columbia were taking to combat climate change.


Three policy briefs have been developed in close cooperation between IIASA, PBL, and Kyoto University for COP 26 in order to further disseminate ENGAGE results directly to policy makers. The policy briefs include topics on: global scenarios, national scenarios, and feasibility.

Finally, ENGAGE and its partners have created a repository of recordings for the UNFCCC Side-Event that the public may access here.

Navigate/Engage Expert Workshop Session

September 22, 2021

As part of a bigger joint NAVIGATE-ENGAGE organized workshop, the ENGAGE consortium organized a workshop session entitled, “Bringing best practice policies of climate mitigation and Sustainable Development Goals to Integrated Assessment Model Scenarios.” The consortium brought together a range of key experts, policy makers, and stakeholders and gathered feedback on the design of the projects’ research activities, scope of analysis, the choice of relevant IAM outputs and policy-relevant scenarios, and the needs for documentation and communication.

The session evaluated the representation of the Sustainable Development Goals (SDGs) related policies in Integrated Assessment Models (IAMs), identified examples best practice policies from around the world, and discussed whether and how to include these policy representations in IAM scenarios. The session focused on the SDG targets around biodiversity, health, food, water, and energy. The participants identified policies that protect biodiversity, improve health, and guarantee access to water, food, and energy while at the same time mitigating climate change and discussed whether/how to include these policies in global IAMs.

The workshop, “Modelling and assessment of impacts, adaptive capacity, and interactions with Sustainable Development goals in IAMs” was kindly hosted by ENGAGE partner CMCC and co-organized by the University of Geneva’s Faculty of Science. The overall workshop attracted 150 participants over the course of three days.

Asian Stakeholder Workshop: decarbonization pathways

The partners of the ENGAGE project held an Asian Stakeholder Workshop on Thursday, September 16, 2021 and Friday, September 17, 2021 wherein the partners presented new research results while collecting fruitful inputs from the 83 stakeholders, hailing from different parts of East, South, and Southeast Asia, on the feasibility and equity of national decarbonization targets.

The Stakeholder Workshop materials can be found here on the ENGAGE website. The page includes the presentations given by the expert partners as well as recordings from the workshop, links to feasibility models, and supplementary reading.