This program helps countries design data-driven, inclusive climate strategies that build coherence across national climate commitments and development plans to minimize tradeoffs and enhance benefits.
2025–2026
Jason Veysey / jason.veysey@sei.orgSilvia Ulloa / silvia.ulloa@sei.org
Through its work on NDCs+, SEI strengthens countries’ national capacity to develop next-generation Nationally Determined Contributions (NDCs) alongside Long-Term Low Emission Development Strategies (LT-LEDS), and related plans, integrating national goals that bring together mitigation, adaptation, finance, loss and damage, just transitions, air pollution, and carbon market mechanisms under Article 6 of the Paris Agreement. Helping countries design and implement ambitious, equitable, and actionable climate strategies is central to SEI’s mission to advance global climate action and sustainable development.
Combining technical analysis, systems modelling, policy engagement and capacity building, SEI supports governments in producing coherent, evidence-based commitments that are aligned with national priorities and the Paris Agreement. With a strong proven track record in supporting climate action and recognized thought leadership across these diverse climate domains, SEI’s integrated approach enables countries to pursue more ambitious and comprehensive climate action, bridge climate and development goals, and accelerate progress towards global targets.
Feature / Morocco’s 2050 net-zero strategy, supported by SEI, aims to boost GDP, create jobs, and achieve significant environmental and economic benefits.
28 May 2024 / About Climate policy, Mitigation, Planning and modelling, Renewables and Sustainable Development Goals
Feature / Learn how LeadIT forges global partnerships to slash heavy industry emissions and innovate for a sustainable future.
30 April 2024 / About Climate policy, Finance, Innovation, Mitigation and Public policy
Project / The project will identify capacity gaps related to creating an enabling environment for inclusive finance flows, with specific attention to adaptation finance.
2023 - 2025 / About Finance
Project / SEI used its flagship tools and expertise to support Kazakhstan in developing its third nationally determined contribution under the Paris Agreement.
2025 / About Adaptation, Climate policy, Finance, Mitigation, Planning and modelling, Public policy and Sustainable Development Goals
SEI brief / This brief highlights SEI's efforts to provide low- and middle-income countries with tools and training needed to integrate climate and development planning.
5 July 2022 / About Planning and modelling and Sustainable Development Goals
Other publication / This briefing paper identifies entry points for integrating transboundary climate risks in the global goal on adaptation framework.
6 November 2023 / About Adaptation
SEI brief / A new analysis looks at six countries and identifies the synergies and conflicts between nationally determined contributions and Sustainable Development Goals.
26 March 2020 / About Climate policy, Food and agriculture, Public policy, Sustainable Development Goals and Water-energy-food nexus
Journal article / LEAP-IBC is a tool to develop integrated strategies to improve air quality, human health and mitigate climate change.
5 October 2020 / About Planning and modelling, Pollution and Short lived climate pollutants
Other publication / Chapter in Quantifying Co-Benefits in Asia: Methods and Applications’, Asian Co-benefits Partnership White Paper 2018
1 April 2018 / About Cities, Food and agriculture, Pollution, Short lived climate pollutants and Transport
SEI working paper / Nationally determined contributions could help in the wind-down of oil, gas and coal production. But countries are only making limited use of this potential.
24 June 2019 / About Climate policy and Fossil fuels
Journal article / This journal article calls for more national and sub-national evaluations of adaptation finance to determine whether money reaches the most vulnerable groups.
26 January 2025 / About Adaptation and Finance
Project / SEI used its flagship tools and expertise to support Kazakhstan in developing its third nationally determined contribution under the Paris Agreement.
2025 / About Adaptation, Climate policy, Finance, Mitigation, Planning and modelling, Public policy and Sustainable Development Goals
Project / The project will identify capacity gaps related to creating an enabling environment for inclusive finance flows, with specific attention to adaptation finance.
2023 - 2025 / About Finance
Initiative / This initiative enables integrated national planning for Nationally Determined Contributions and Sustainable Development Goals.
2020 - 2024 / About Planning and modelling, Pollution and Sustainable Development Goals
Initiative / This initiative focuses on integrated analysis and planning for the mitigation of air pollution and greenhouse gases, including short-lived climate pollutants.
2015 - 2019 / About Cities, Climate policy, Food and agriculture, Fossil fuels, Household energy, Mitigation, Planning and modelling, Pollution, Renewables, Short lived climate pollutants and Transport
One-SEI program / Our mission is to help accelerate the allocation of capital to sustainable economic activities.
2022 - 2031 / About Finance, Renewables and Sustainable Development Goals
Initiative / The initiative explores implications of transboundary climate risks and strengthens cooperation to meet the global challenge of adaptation to climate change.
2019 - 2023 / About Adaptation, Climate policy and Climate services
Tool / The Low Emissions Analysis Platform (LEAP) is a powerful, versatile system for energy planning and climate change mitigation assessment.
About Climate policy, Energy access, Planning and modelling and Pollution
Tool / The Next Energy Modeling system for Optimization (NEMO) is a high-performance, open-source optimization tool designed to answer energy policy questions.
About Adaptation, Mitigation, Planning and modelling and Renewables
Tool / Analyse and compare how climate actions correspond to the Sustainable Development Goals (SDGs)
Tool / AMES is a macroeconomic simulation model designed to extend resource planning models. It is closely integrated to SEI’s Low Emissions Analysis Platform.
Tool / The Water Evaluation and Adaptation Planning tool (WEAP) provides a comprehensive and user-friendly framework for policy analysis in water resources planning.
About Planning and modelling and Water resources
Collection / SEI supports NDCs 3.0 with cutting-edge tools and insights for ambitious, science-based climate action plans in 2025 and beyond.
Feature / SEI and partners created a climate village at a historic arts festival in Hungary to bring youth views and artistic expression into climate policy discussions.
30 April 2026 / About Adaptation, Disaster risk and Participation
SEI report / This report provides guidance for Malmö to leverage sufficiency-oriented approaches to reduce consumption-based emissions and engage citizens in climate action.
29 April 2026 / About Innovation, Participation and Public policy