The CARE (Carbon Avoided: Retrofit Estimator) Tool is used for estimating and comparing the embodied, operating, and avoided carbon impacts and benefits of reusing and upgrading existing buildings or replacing them with new construction. The CARE Tool allows users to compare the total carbon impacts of renovating an existing building vs. replacing it with a new one.

The CARE Tool is an Architecture 2030 Project. 

This report - Sri Lanka Roadmap for Sustainable Housing and Construction 2020 – 2050 - presents the findings of the Sustainable Building Construction Country Assessment for Sri Lanka (SBC-CA) and a Roadmap for Sustainable Housing and Construction and achieving NDCs in the construction industry in Sri Lanka. It examines the current status, and potential opportunities and challenges for adopting Sustainable Building Construction (SBC) practices and policies. The Country Assessment and the Roadmap are structured on the approach laid out by the ‘Global Alliance for Building Construction (GlobalABC) Roadmap for Buildings and Construction 2020-2050, where 8 Action Areas have been identified for the transition towards sustainability in the Construction Sector: Urban planning, New Buildings, Existing Buildings, Building Operations, Appliances and Systems, Materials, Resilience, and Clean Energy.

Download the roadmap here.

The Global Status Report for Buildings and Construction (Buildings-GSR) is a flagship publication of the UNEP-hosted Global Alliance for Buildings and Construction (GlobalABC). The Buildings-GSR provides an annual snapshot of the progress of the buildings and construction sector on a global scale and 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.

What is new in the 2022 Buildings-GSR? 

• Buildings and construction: disruptions and challenges facing the buildings sector in 2022 
• Global Building Carbon Tracker: Are we on track towards the Paris Agreement Goals?
• Updates on building codes and building decarbonisation in Nationally Determined Contributions (NDCs)
• Status of investment in building energy efficiency
• Deep dive on:
  • Africa (regional focus)
  • Building materials (topical focus)

The 2022 Buildings-GSR finds that 

• Despite a substantial increase in investment and success at a global level lowering the energy intensity of buildings, the sector’s total energy consumption and CO2 emissions increased in 2021 above pre-pandemic levels. Buildings energy demand increased by around 4% from 2020 to 135 EJ – the largest increase in the last 10 years. CO2 emissions from buildings operations have reached an all-time high of around 10 GtCO2, around a 5% increase from 2020 and 2% higher than the previous peak in 2019. 
• The buildings and construction sector is not on track to achieve decarbonization by 2050. And the gap between the actual climate performance of the sector and the decarbonization pathway is widening.
• Global energy price volatility and rising interest rates are likely to hamper investment in building decarbonization by governments, households, and businesses. 

Download our 2022 Buildings-GSR and read more!

Watch our video "Is the Buildings and Construction Sector on Track to decarbonize? 2022 Buildings-GSR." 

Effective energy efficiency policy is more important than ever for mitigating carbon emissions and improving energy access globally. Policymakers and researchers can take advantage of Mepsy, CLASP’s free policy analysis tool, to make data-driven decisions about managing the top energy-consuming appliances, now including lighting and considerations for varying compliance levels. This webinar, held on 16 March 2022, informed participants of two major additions to Mepsy’s toolkit: lighting and compliance. In addition, CLASP demonstrated how to use Mepsy to perform custom analyses and multiple tier policy analyses, in response to high demand for the feature. To see all related materials, including a recording of the webinar, visit https://www.clasp.ngo/research/all/2022-mepsy-webinar-materials/

This volume on the building and construction sector provides an overview of the different sources of GHG emissions from the building and construction sector, as well as methodologies for quantifying these emissions to feed into the preparation and reporting of national GHG inventories. By better understanding the sources of emissions over the whole life cycle of buildings, it thus provides guidance on the most appropriate and effective mitigation strategies and policies for decarbonizing the building and construction sector based on national circumstances. We are optimistic that the guidance contained in this volume will be of some help to developing country Parties to make informed choices when setting building and construction sector emission reduction targets; implementing climate change mitigation actions and reporting on them in their national communications,biennial update reports and in future, biennial transparency reports.

Les marchés de la climatisation ont connu au cours des dernières années une croissance soutenue qui a conduit à une progression constante des taux d’équipement. Pour les ménages, l’enquête réalisée à l’été 2020 a constaté un taux d’équipement de 25%. Dans le secteur tertiaire, toutes activités confondues, la proportion de surfaces climatisées est évaluée à 40 %, avec de fortes variations entre les différents secteurs.
Cet essor de la climatisation s’accompagne de la montée de la problématique de son impact environnemental. En effet, les équipements de climatisation agissent sur le climat au travers de leurs consommations énergétiques et via les émissions de GES des fluides frigorigènes chargés dans les équipements.
Les évolutions technologiques permettent d’envisager une amélioration du bilan environnemental des équipements et systèmes de climatisation. Mais la prise de conscience des utilisateurs, les conduisant à privilégier un usage raisonné des systèmes, constitue indéniablement une priorité pour les prochaines années. Augmenter la température d’ambiance dans un local climatisé, limiter l’usage de la climatisation aux périodes de fortes chaleurs et adopter les «bons gestes» conduisent immédiatement à des réductions très importantes des consommations énergétiques associées à ces systèmes.

The Global Status Report for Buildings and Construction is a reference document published by the UN Environment Programme (UNEP)-hosted Global Alliance for Buildings and Construction (GlobalABC). This year's edition finds that in 2020, the sector accounted for 36 per cent of global final energy consumption and 37 per cent of energy related CO2 emissions, as compared to other end use sectors. While the level of emissions within the sector are 10 per cent lower than in 2019, reaching lows not seen since 2007, this was largely due to lockdowns, slowing of economies, difficulties households and businesses faced in maintaining and affording energy access and a fall in construction activity. Efforts to decarbonize the sector played only a small role.

Collectively, stakeholders in the sector must seize the opportunity that the COVID-19 economic recovery period offers to foster transformation for decarbonizing the sector. The sector must simultaneously meet a projected near-doubling of global demand for energy services in buildings and at least a doubling of floor space as developing economies continue to respond to the growing demand for building floor space, access to energy services and economic activities.

The GlobalABC is co-lead of the Built Environment Track of the Human Settlements Pathway!

The Human Settlements are one of the Thematic Areas of the Climate Action Pathways, which are a vital part of the Marrakech Partnership for Global Climate Action (MPGCA) tools to enhance climate action and ambition towards fully implementing the Paris Agreement. The Pathways aim to provide a roadmap to help Parties and non-Party stakeholders alike to identify actions needed by 2025, 2030 and 2040 as steps to get to the 2050 vision of a 1.5°C resilient world. In this regard, the climate action pathway for human settlements addresses whole-life carbon mitigation, adaptation and resilience in the built environment, as well as waste and consumption within human settlements.

Restricting climate change to 1.5°C would need “rapid and far-reaching” changes around energy use, industry and buildings design, as well as the wider planning of cities and infrastructure. The buildings and construction sector currently account for almost 40% of global energy and process-related carbon emissions, while around half of buildings that are predicted to exist in 2050 have yet to be built. Continuing in this direction, over 970 cities could be subjected to extreme heat, 500 cities could suffer from lack of water availability, and over 570 cities could be impacted by sea level rise by 2050. If action is not taken today, we risk locking emissions and vulnerability into our buildings and infrastructure that will become increasingly costly to mitigate in the future. Based on this critical observation, the built environment track of the Human Settlements climate action pathway outlines a set of necessary stakeholder (i.e. policy makers, financial institutions, technology providers and innovators, business and service providers and civil society) actions to be taken to accelerate the transition to a net-zero carbon, healthy and resilient built environment.

A large part of the construction sector’s emissions come from building products and materials – referred to as embodied carbon. Embodied carbon is increasingly becoming the focus of regulatory bodies, making it a risk factor for developers and investors to price into construction projects.

This report provides guidance on how to reduce embodied carbon in buildings. The report targets developers and investors who have a unique opportunity to shape demand and drive transformation at the early stages of building projects. By doing so, they can significantly reduce the “financed” emissions across different asset classes they are invested in.

The report provides over 50 embodied carbon-reduction policies and best practices that investors and developers can adopt for their projects and guidance on how to use them. We have grouped each measure into one of the following five categories.

• Create a carbon policy that sets out consistent requirements for all projects to follow.
• Set targets and transparency requirements for projects to meet across all their phases.
• Prioritize circularity – that is, less new building and more reuse and refurbishment.
• Design optimization to use less material and to choose materials with a low carbon footprint.
• Low-carbon procurement to ensure acquisition of materials with a low carbon footprint.

Developers and investors can use the guidance as it stands or adapt it to their needs. The measures and requirements are flexible and can easily be combined with different green building certifications or sustainability reporting systems.

This report looks in detail at the results of six whole life cycle assessment (WLCA) case studies to illustrate some of the challenges, barriers and opportunities relating to the building industry’s carbon footprint. It aims to provide an insight into the industry’s current performance and compare it to possible net-zero trajectories.

Analyzing the whole life carbon emissions of six building projects using the WBCSD Building System Carbon Framework, the report shows that:

• An average whole life carbon footprint of 1,800 kgCO2e/m2 was estimated across the six case studies.
• As much as 50% of whole life carbon emissions in a building comes from embodied carbon (manufacturing of materials and the construction process) the majority of this being emitted immediately at the start of the life cycle.
• Typically as few as six materials account for 70% of the construction-related embodied carbon.

The report identifies crucial next steps to support the sector’s journey toward decarbonization:

• Adopt a clear definition of a net-zero building, taking into account whole life-cycle carbon.
• Carry out WLCA on all projects, using a consistent methodology and open-source sharing of the data obtained.
• Commit to clear, simple global targets across the buildings industry, including a valid approach to residual emissions (offsetting).
• Develop consistent and transparent carbon intensity certification for components, systems and materials used by the industry.
• Achieve wider collaboration as individual organizations taking action is not enough.

WBCSD developed this report in collaboration with professional service firm Arup. The authors encourage stakeholders from across the built environment to conduct whole-life carbon assessments of their projects and openly publish the results to create a body of evidence and foster shared learning.