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Mott MacDonald has been appointed by the Mayor of London’s office to deliver the Zero Carbon Accelerator, a programme aimed at helping organisations decarbonise and achieve London’s net zero target by 2030.
Research commissioned by the Mayor of London shows that many organisations across London need expert support to increase their ability to achieve net zero. With buildings accounting for 67 per cent* of the capital’s carbon emissions, the Zero Carbon Accelerator will help organisations such as local authorities and health, education, and social housing providers, to co-create and implement their net zero plans to reduce their environmental impact.
The programme has been created to address key barriers that have prevented organisations from decarbonising their buildings at the rate and scale necessary to reach net zero by 2030, including a lack of capacity, complex procurement, limited funding, and supply chain challenges.

Mott MacDonald will work alongside Energy Saving Trust and an alliance of experts in energy solutions, zero carbon strategy, retrofit, modelling, architecture, and finance. The Zero Carbon Accelerator will provide essential support to organisations at every stage of their decarbonisation journey, from initial advice and training to procuring funding for projects. Key elements of the programme include:
The Zero Carbon Accelerator builds on the success of the Mayor’s Low Carbon Accelerators (2016-2024), which have saved an estimated 157GWh since 2016 and attracted over £250m in capital to make public sector buildings more energy efficient.
The Zero Carbon Accelerator offers flexible and varied support to empower organisations to act, aiming to create more green jobs and boost investment in local green economies.
Deputy Mayor for Environment and Energy, Mete Coban said: “We know how important it is to work together to reduce our carbon footprint, but for some organisations lack of guidance and technical assistance has been a barrier to achieving net zero.
“This new programme will help organisations to reduce their carbon emissions and provide them with the support and knowledge they need to make tangible changes to their environment – as we build a greener and fairer city for all.”
Professor Denise Bower, group external engagement director at Mott MacDonald said: "The Zero Carbon Accelerator is a prime example of a governing body seriously addressing the challenge of the zero-carbon transition and showing the ambition required to drive transformational change in the built environment.
“Working with our partners, we will draw on our decades of experience managing carbon reduction on complex programmes, and use this to help organisations across London build and sustain low carbon capacity and capability of their own.”
Delivering decarbonisation fairer and faster was the theme of Carbon Crunch 2025 in London this autumn. Keynote speaker Nigel Topping, the new chair of the Climate Change Committee, along with other speakers at the event explored why fairer matters and how going faster is critical to competitiveness.
In 2023, Mott MacDonald’s report Zero Emissions English Airports: Target Further Analysis, produced for the Department for Transport, explored the commercial feasibility of decarbonising airport operations across England.
How Port of Dover is leading the way on the drive to net zero was presented at Carbon Crunch 2025 in London and the session explored why decarbonisation strategies must be translated into tangible activities.
Government has set out a Clean Power 2030 plan to decarbonise the electricity sector. But there is more to reaching this target in a fast and fair way than just finance, technology and infrastructure, according to speakers at Carbon Crunch 2025 in London.
Mott MacDonald’s recent webinar explored how NHS organisations can utilise the Climate Adaptation Framework to design, develop and implement best-practice plans.
Mott MacDonald and WSP have been appointed by Great British Energy – Nuclear to provide environmental services and permitting support for the Wylfa SMR programme, advancing the UK’s shift to reliable low‑carbon energy.
Claudio Tassistro, managing director energy, Europe commented: “Changes announced today to the judicial review process will be critical to successful delivery of the government’s 10-Year Infrastructure Strategy and clean energy 2030 target."
Mott MacDonald celebrated moving into its new Manchester office in the heart of the city with the help of the Mayor of Greater Manchester, Andy Burnham.
The HyBont Green Hydrogen Project was one of the first onshore green hydrogen projects from the UK government’s Hydrogen Allocation Round One (HAR1) funding and is a potential model project for hydrogen production in the UK.
Systems thinking enabled better stakeholder and asset owner collaboration to identify and act on shared climate risk in London.
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