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+44 1865 259200
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.
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 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 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.

Category: National Governments, Emission Inventories
Aether contributed to the analysis of procurement (Scope 3) emissions reporting in the Scottish public sector. The research aimed to demonstrate approaches and tools available to Scottish public bodies. The aim was to understand and report their supply chain emissions, providing options for action to improve supply chain reporting across the public sector.
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Aether, in partnership with NEXUS International University (NIU) and the University of Liberia, provided capacity building training in GHG inventory compilation and MRV systems in Liberia.
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Aether’s infographics and reports have encouraged engagement of the public in Jersey with climate change issues. We have supported the States of Jersey Department of the Environment for 3 years across a range of climate related topics.
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Posted on: 19 June 2026
Aether spent a week at the European Commission in Brussels as part of the review of air pollutant inventories submitted under the EU’s National Emission reduction Ceilings Directive (NECD).
Read full storyPosted on: 18 May 2026
Aether travelled to the Estonian Environmental Research Centre (EKUK) in Tallinn to deliver a two-day training workshop for the inventory team to build capacity on the Excel power queries used in the GHG inventory templates previously set up by Aether in 2022.
Read full storyPosted on: 30 April 2026
Aether delivered a three-day GHG inventory capacity building workshop in Saint Vincent and the Grenadines, towards development of the BTR1.
Read full storyPosted on: 17 March 2026
Aether provided representatives from Central Asia (Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan and Kazakhstan) who were visiting the UK on a study tour with an introduction to air quality management.
Read full storyTestimonial