Category: Cities and Local Authorities, Emission Inventories, Policies and Measures

Merton Council Climate Emergency Support

Aether and SE2 supported Merton Council in developing their action plan to meet targets to decarbonise the Council by 2030 and the borough of Merton by 2050

The challenge

Merton Council declared a climate emergency in July 2019 and set carbon reduction targets to decarbonise the Council by 2030 and the borough of Merton by 2050. Merton has a history of taking strong action in this area and has had a climate strategy since 2009. However, unprecedented change will be necessary going forward. Merton Council contracted Aether, along with SE2, to provide support in the preparation of Merton’s climate action plan. The challenge was to identify and quantify a range of actions that Merton might undertake to achieve the decarbonisation targets.

The solution

To underpin the development of Merton’s Climate Strategy & Action Plan, Aether supported Merton Council by:

  • Establishing the scope of greenhouse gas (GHG) emissions to be included in the inventories and net zero carbon targets
  • Developing GHG inventories for the borough and council
  • Modelling decarbonisation pathways to reach the targets
  • Identifying and costing the range of actions that may be required
  • Identifying means to track progress towards the targets.

We partnered with SE2 to deliver two workshops; a small initial session with council staff focusing on the scope and principles of the targets, and a larger workshop with local stakeholders and interest groups to discuss the key actions that should be included in the decarbonisation modelling scenario.

Our modelling used the Carbon Scenario Model (CSM), an Excel based tool to develop decarbonisation pathways for the council up to 2030 and the borough to 2050, including individual GHG savings and costs of actions.

The result

Merton Council now has a greater understanding of the actions that are required within Merton to meet their decarbonisation targets. The actions identified and cost estimates have been used in the preparation of the new Climate Strategy & Action Plan.

Find out more about how Aether is supporting local authorities with Climate Emergency declarations here.

See all case studies

Chris Dore

Director

Related case studies

Ealing Council Climate Action Plan Multi-Criteria Analysis

Category: Cities and Local Authorities, Policies and Measures

Aether developed a multi-criteria analysis of Ealing Council’s Climate and Ecological Emergency Strategy (CEES) to support the Council with prioritisation and delivery of climate actions to reach their 2030 target of carbon neutrality.

Read case study

Railfreight Energy and Emissions Calculator (REEC)

Category: Cities and Local Authorities, Emission Inventories, Rail

REEC is the first tool for the UK that can calculate, to a high level of granularity and accuracy, the energy usage and resulting emissions for a specified freight train configuration travelling on specified routes on the GB rail network.

Read case study

Lewisham Route to Neutral

Category: Cities and Local Authorities, Emission Inventories, Policies and Measures

Support to Lewisham Council to define the route to carbon neutral for the Borough

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...

“ Aether delivered training workshops and generated learning materials for our SSN members, providing technical content in a manageable and comprehendible format. We particularly benefitted from their extensive knowledge and ability to interpret the needs of our members into the training materials. ”

Jennifer Anderson, Sustainable Scotland Network

“ Saint Lucia embraces the professional approach with which this project was undertaken by Aether, particularly their ability to develop mentorship relations with local government experts. This provides a basis for ensuring that the pool of local experts remain engaged and recognized over successive processes. ”

Annette Rattigan-Leo, Chief Sustainable Development and Environment Officer

“ 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

“ We have been collaborating with Aether for several years, and our projects have greatly benefited from it. Aether staff are very knowledgeable, professional and flexible - and last but not least, very friendly and a pleasure to work with. ”

Umhverfisstofnun, Environment Agency of Iceland

“ The team at Aether works very professionally and communicates very well which makes working with them a pleasure. Outputs are delivered on time to high quality. The team brings the rigour of technical knowledge and expertise and finds innovative ways of communicating complex messages. I would be happy to recommend the Aether team to organisations working on analysing and presenting emissions information in the public domain. ”

Fiona Glover, States of Jersey

“ 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