Category: National Governments, Policies and Measures

Luxembourg Climate Action: Stakeholder engagement and reporting Portal

Aether developed an innovative online platform, or Portal, for gathering, analysing and reporting Luxembourg’s climate policies and measures. The Portal acts as a central point for stakeholder engagement and keeps a live master list of national climate actions, with associated impact and cost analysis.

The portal enables Luxembourg to generate the export files needed for reporting under the EU Monitoring Mechanism Regulation (MMR), as well as providing an important tool within Luxembourg’s national system on Policies and Measures and Projections (MMR Articles 12 and 13). In addition, the portal can facilitate reporting under Article 13 of the Paris Agreement and in the provision of information for Biennial Reports, National Communications and Nationally Determined Contributions.

The challenge

As a Member State of the European Union (EU) and an Annex I Party to the United Nations Framework Convention on Climate Change (UNFCCC), Luxembourg has legal reporting requirements concerning climate change policies and measures (PaMs).

The challenge was to develop an online system that improved the quality and management of data related to Luxembourg’s climate PaMs, while at the same time increases stakeholder engagement and reduces the workload for involved officials. The project was developed to enhance institutional memory and ensure a transparent flow of information through standardised approaches to calculate impacts.

The solution

The online portal was developed in collaboration with local stakeholders, including the Ministry of Sustainable Development and Infrastructure in Luxembourg. Data for the Portal was supplemented through stakeholder engagement exercises running in parallel with the project, where engagement with sector experts and stakeholders enabled previously unreported PaMs to be identified.

Aether also developed approaches and methodologies for estimating the ex-ante and ex-post impacts of the climate actions. The online portal provides a central point for stakeholder engagement and keeps the list of actions and their associated impacts available to view and update. The system’s workplans support the organisation of data gathering and reporting activities aligned with reporting requirements.

The result

The online portal now serves as a central registry of Luxembourg’s climate actions. It contains associated background information, calculation files, ex-post and ex-ante impacts, costs and indicators.

The Portal was successfully used for Luxembourg’s PaMs reporting to the EU MMR and to develop Luxembourg’s 7th National Communication and 3rd Biennial Report.  The outputs included the elaboration and estimation of the impacts (ex-ante and ex-post) of several climate actions and a prioritised list of climate actions in line for future elaboration.

The portal provides direct stakeholder engagement opportunities with access to edit contents, provision of templates, guidance and relevant training. Going forward, there are opportunities to expand the portal to include non-climate mitigation elements such as air quality, co-benefits and climate adaptation.

Dashboard page of the Luxembourg Portal

See all case studies

Chris Dore

Director

Related case studies

Antigua and Barbuda Biennial Update Report (BUR)

Category: National Governments, Policies and Measures

Aether has been supporting Antigua and Barbuda on their first Biennial Update Report (BUR) by writing the Mitigation chapter. This work will enable Antigua and Barbuda to report transparently on initiatives addressing climate change mitigation and adaptation. Also the climate action database will enable the Department of Environment to take stock of climate related initiatives across the country, including the flow of climate finance, and relate this to national strategies and targets.

Read case study

Rwanda: Review of GHG inventory, mitigation assessments and national reports

Category: National Governments

Emma Salisbury was contracted as an international expert to support Rwanda’s Greenhouse Gas (GHG) reporting to the United Nations Framework Convention on Climate Change (UNFCCC).

Read case study

Montenegro’s Third Biennial Update Report (BUR)

Category: National Governments, MRV

Justin Goodwin was contracted as an international expert to support Montenegro with writing the Monitoring, Reporting and Verification (MRV) chapter for their third Biennial Update Report.

Read case study

News

Latest news

Posted on: 13 January 2026

Devolved Governments Air Pollutant Emissions Inventories

The air pollutant emissions inventories for England, Scotland, Wales, and Northern Ireland were published in September 2025. The data covers the period 2005 to 2023, for the pollutants ammonia, carbon monoxide, nitrogen oxides, non-methane volatile organic compounds, PM10, PM2.5, sulphur dioxide, and lead. In addition, experimental inventory statistics are presented for emissions of benzo[a]pyrene, dioxins and furans, and mercury.

Read full story

Posted on: 11 December 2025

Aether provided training to strengthen Government of Jersey’s climate policy modelling capacity

Aether completed a project for to train staff in Government of Jersey in using Aether's Carbon Scenario Model to quantify the carbon impacts of net zero policies. The model is a key tool for the Government of Jersey for informing policy decisions on climate actions, and other related policies.

Read full story

Posted on: 6 October 2025

Aether Experts Contribute to IPCC Report on Short-Lived Climate Forcers

In the first week of October Richard Claxton and Sergii Shmarin were in Istanbul, contributing as lead authors to the upcoming IPCC Methodology Report on Short-Lived Climate Forcers (SLCFs). SLCFs - such as black carbon, and other ozone precursors play a critical role in climate change and air quality. The new methodology report will provide essential guidance for countries to improve their emissions inventories and strengthen climate action.

Read full story

Posted on: 1 September 2025

Six new project wins for the land development services team

Aether has recently expanded its Land Development services and secured six new commissions with one of the UK’s top 14 house builders. These projects span from comprehensive Environmental Impact Assessments for large-scale residential developments to focused sustainability, energy, and air quality reports for smaller schemes.

Read full story

Testimonial

Don't just take our word for it...

“ I must congratulate each of you for your professional and tireless efforts. Let me point out that this has been the 'neatest' in-country review expert review team I have coordinated, and it has been a real pleasure. ”

UNFCCC Secretariat

“ Chris was excellent to work with and always very pro active in making suggestions, taking work forward and applying his considerable technical knowledge in effective ways. ”

Robert Vaughan, Defra Air Quality Team

“ We have worked with Aether since 2019 to baseline, and subsequently update, our council and borough greenhouse gas inventories. It is a pleasure working with Aether’s professional, responsive, collaborative and helpful team. ”

Merton Council

“ Both the face-to-face training and the online version have been of high quality, with dynamic methods and a practical orientation that have allowed students to reach a solid knowledge base. The products have been delivered within the stipulated deadlines with an excellent quality and the team has always shown willingness to make adjustments according to the requirements of CONAF. We are very satisfied with the work. ”

Javier Cano Martín, Professional Unit for Climate Change and Environmental Services, CONAF (National Forestry Corporation), Chile

“ The Aether team were a joy to work with and I would recommend the consultancy - the service provided throughout the process was exceptional. Where there were problems, they provided solutions. The team were working to very short time scales but were able to deliver a high quality piece of work within the specified time frame. ”

Sefton Council – for the Merseyside Atmospheric Emissions Inventory

“ Aether was a great asset in involving/engaging with Member States experts on highly technical subjects regarding GHG reporting. Very clear communication of issues and results. ”

Andreas Pilzecker, DG CLIMA