Since its launch at COP 26, the Breakthrough Agenda has become established as an annual collaborative process centred around the Conference of the Parties (COP) meetings of the United Nations Framework Convention on Climate Change (UNFCCC). It is currently supported by 59 countries representing over 80% of global GDP, and by over 100 initiatives working to enhance collaboration within major emitting sectors. Countries can endorse Breakthrough goals to make clean technologies and sustainable practices more affordable, accessible and attractive than their alternatives by 2030 in the power, road transport, hydrogen, steel, cement, buildings and agriculture sectors. This report covers six of the seven sectors, with agricultural covered in a separate report.

The Breakthrough Agenda establishes an annual cycle to track developments towards these goals, identify where further coordinated international action is urgently needed to accelerate progress and then galvanise public and private international action behind these specific priorities in order to make these transitions quicker, cheaper, and easier for all.

To initiate this cycle, world leaders tasked the IEA and the UN Climate Change High Level Champions to develop an annual Breakthrough Agenda report to provide an independent evidence base and expert recommendations for where stronger international collaboration is needed.

This document, the 2024 Breakthrough Agenda Report, is the third of these annual reports. It provides an assessment of progress against the recommendations made last year, updating recommendations for what more needs to be done.

This year's report includes the second edition of the Buildings Chapter, developed in collaboration with the GlobalABC. The chapter highlights progress in the built environment and calls on governments to strengthen collaboration, in five priority areas: standards & certification, demand creation,  finance & investment, research & deployment, capacity & skills– to accelerate decarbonisation and enhance resilience in buildings. 

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The Global Status Report for Buildings and Construction (Buildings-GSR), a report published by the UN Environment Programme (UNEP) and the Global Alliance for Buildings and Construction (GlobalABC), provides an annual snapshot of the progress of the buildings and construction sector on a global scale. The Buildings-GSR reviews the status of policies, finance, technologies, and solutions to monitor whether the sector is aligned with the Paris Agreement goals. It also provides stakeholders with evidence to persuade policymakers and the overall buildings and construction community to take action.

As outlined in the latest edition, the buildings and construction sector contributes significantly to global climate change, accounting for about 21 per cent of global greenhouse gas emissions. In 2022, buildings were responsible for 34 per cent global energy demand and 37 per cent of energy and process-related carbon dioxide (CO2) emissions.

Policy progress is evident with more comprehensive climate action plans covering buildings and construction in Nationally Determined Contributions (NDCs). However, few align with net-zero operational emissions, and while over 81 countries have building energy codes, many are outdated.Investment in building decarbonisation exceeded US$285 billion in 2022 but is expected to decline in 2023, largely due to a less favourable investment environment due to rising costs. The necessary increase in investments falls short of the net-zero targets for new and existing buildings by 2030 and 2050, respectively.

The 2022 update of the Global Buildings Climate Tracker (GBCT) paints a concerning picture: the gap between the current state and the desired decarbonisation path is significant. To align with the 2030 milestone, an annual increase of ten decarbonisation points is now required, a substantial jump from the six points anticipated per year starting in 2015.

The GBCT shows a negative rebound since 2020 in the decarbonization of the buildings sector, with increased energy intensity and higher emissions. The gap between the actual climate performance of the sector and the necessary decarbonization pathway is widening. The lack of structural or systemic decarbonisation improvement in the building sector leaves its emissions reductions vulnerable to external factors.

To reach the goals of net-zero carbon emission buildings for new buildings by 2030 and existing buildings by 2050, stronger policies are needed to enhance energy efficiency and address carbon emissions from building materials and construction. National efforts are crucial, with countries forming coalitions to share best practices and promote low-carbon construction.

This year, the deep dive chapters are the following: Adaptation and resilient construction methods; Innovations in business cases (renovation and green building construction industry); and Nature-based solutions and biophilic design.

A welcome development in 2023 was the Buildings Breakthrough launched at COP28, to coordinate between countries to make clean technologies and sustainable solutions in the buildings and construction sector the most affordable, accessible, and attractive option in all regions by 2030.

Looking forward to 2024, the focus must be on tangible emission reductions, enhancing building performance, increasing renewable energy use and addressing housing and energy access disparities. Despite the complexities, strategic partnerships can facilitate the shift to an efficient, resilient and whole life net-zero carbon global building stock.

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It is estimated that around 80% of cities worldwide do not have affordable housing options for the majority of their population (1). The world needs to provide two billion homes over the next 75 years — meaning 96,000 new affordable homes need to be built every day (2).

The global housing crisis, interlinked with the dual crises of unprecedented climate change and biodiversity loss, is one of the greatest social challenges we are facing today. Housing infrastructure can continue to exacerbate problems or can be part of the solution. The global building and construction industry needs a monumental shift.

The ‘Sustainable and Affordable Housing’ report challenges the widespread perception that affordable and sustainable housing is not a mass market solution. Many of the solutions to the global housing crisis already exist. The case study content from five regions highlights cutting-edge built environment projects, making sustainable and affordable housing a reality for all — from 3D printed homes in Kenya, community engagement and collaborative financing models in Nepal, to disaster-resilience retrofits in the Philippines. 

Through this publication, WorldGBC champions a unified vision for sustainable, affordable housing and spotlights best practice worldwide to demonstrate opportunities for success that could be scaled for greater impact. An analysis of case study data derives key calls to action for policy makers, the finance community, community approaches, and the design and construction industry.

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This report covers the role certain types of energy service agreements (ESAs), combined with federal incentives, can play in scaling AMFH retrofits, maximizing the impact of the 2022 Inflation Reduction Act in decarbonizing existing buildings.

Energy service companies (ESCOs) offer solutions for solar PV, energy efficiency, and electrification measures; often assume some amount of project performance risk; and provide project financing under an ESA. Certain types of ESAs present a viable solution for solving the split incentive issue, financing mid-cycle AMFH retrofits, and addressing the challenges owners may face covering the upfront costs of comprehensive improvements.

This report is based on interviews with ESCOs and techno-economic analysis that quantifies the potential of ESAs for financing building decarbonization packages.

Cities across the world have been battling a housing crisis in recent decades, with many residents increasingly struggling to find affordable homes, and broader issues arising around tackling homelessness, improving housing quality, and harnessing the role of housing in climate change mitigation. This housing crisis has been exacerbated by the cost-of-living crisis that saw inflation reach record highs in 2022. City mayors can take critical action through their powers over housing, land use, and infrastructure.

This paper highlights the systemic issues underlying the housing crisis in cities, and offers inspiring examples of how cities in OECD countries and beyond have been addressing these challenges. It aims to inform the 6th Meeting of OECD Champion Mayors for Inclusive Growth and drive positive change towards more affordable cities and homes for all.

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