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About Carbon Re

Our sole mission is to reduce global emissions at the Gigatonne scale

The world is facing an existential threat from runaway climate change and the industries on which our modern societies are built such as cement, steel, chemicals, glass, paper and ceramics are responsible for more than a fifth of all greenhouse gas emissions.

These energy-intensive industries face a perfect storm of low margins, growing carbon prices and pressure to decarbonise. But proposed solutions such as green hydrogen and carbon capture are too costly and a long way from maturity. We can’t wait: the world needs solutions that work today, not in years or decades.

Cutting emissions and costs

We know that to make net-zero a reality, we have to make it economically feasible. This is why Carbon Re is building technologies that provide manufacturers with significant financial and ESG value, today.

Starting with cement, our Delta Zero software product enables energy intensive process industries to reduce their emissions and costs simultaneously. 

Leveraging the power of AI

We apply state-of-the-art artificial intelligence to leverage opportunities for energy efficiency in energy-intensive industries. Using deep reinforcement learning, we optimize energy use in manufacturing, enabling producers to cut their emissions by up to 20% whilst saving millions in costs every year.

We believe that getting to net-zero will require a complete re-engineering for the way societies  produce and consume, and that AI and computing will be at heart of this carbon revolution. Carbon Re’s goal is to build world-leading products and solutions to meet the evolving needs of the net-zero transition in energy intensive industries. 

Our Team

Aidan O'Sullivan

Aidan O'Sullivan


Aidan is Co-Founder and Chief Technology Officer at Carbon Re. He is also Associate Professor in Energy and AI at the UCL Energy Institute and Programme, Committee Chair for AI and Climate Change at the International Research Center on Artificial Intelligence (IRCAI) under the auspices of UNESCO. He has a PhD in Mathematics from Imperial College London and was a Postdoc at MIT. Aidan’s research focuses on the application of AI in the energy sector.


Buffy Price


Buffy is Co-Founder and Chief Operations Officer at Carbon Re. She was previously the AI for Climate Partnerships Manager, at Element AI, a Senior Advisor at Amnesty International and a Project Manager at the International Institute for the Environment and Development. Buffy has extensive experience in change management and organizational processes, and has a BSc in Neuroscience.


Chiara Campagnola

Machine Learning Engineer

Chiara is a graduate of the UCL Machine Learning MSc programme, where she focused on building Question Answering models able to handle multiple steps of reasoning. She has experience in Software Engineering and a degree in Electronic Engineering.

Daniel Summerbell

Daniel Summerbell


Daniel is Co-Founder and Chief Solutions Officer at Carbon Re. He is also a Visiting Fellow at the Institute for Manufacturing in Cambridge and previously worked in manufacturing operations across the UK, Europe and North America. Daniel’s research focuses on cost-effective environmental improvements in industry, with a particular focus on construction and the cement industry.

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David Boyd

Strategic Advisor, Corporate Development

David is supporting the development of Carbon Re’s strategy and growth plans. He is an engineer focused on defining and implementing new business models. David has over 20 years experience in mergers and acquisitions, and in his last role successfully turned around a loss-making pharmaceutical data business as Managing Director, followed by the £ multi-million sale of the business to private equity.

Kelly Cailes (1)

Kelly Cailes

Director, Project Liaison, South East Asia

Kelly is supporting our commercial pilots in South East Asia. He has been living and working in Asia for 21 years with a sectoral focus in Energy, Agriculture, Manufacturing and Construction. He is a Senior Electrical/Mechanical Project Manager with extensive consulting experience in Market Entry Strategies, Business Development and Customer Relationship Management.


Mathias Hartemann

Data Scientist

Mathias is a graduate of the MSc Energy Systems and Data Analytics programme at UCL, where he focused on Energy Systems, Energy data analytics (Regression, Classification, Clustering, Dimensionality Reduction, Neural Network), Energy and transport analytics, Spatial Analysis, Energy Technology and Innovation.


Muhammad Iftikhar

Senior Solutions Engineer

Muhammad is an experienced Process Engineer/Manager, Plant/Energy Manager in Soda Ash, Lime and cement, waste management and laundry industries. He has a Masters in Chemical Engineering.


Nantas Nardelli

Senior Research Scientist

Nantas is a doctoral candidate at the University of Oxford, where he focused on developing reinforcement learning algorithms that can learn to cope with complex environments and real-world dynamics. Previously he worked on various research projects at Microsoft Research, Facebook AI Research, FiveAI, and DeepMind, and spent a few years doing research in robotics at the University of Edinburgh whilst obtaining a degree in AI.


Sherif Elsayed-Ali


Sherif is Co-Founder and Chief Executive Officer at Carbon Re. He previously set up and led the AI for Climate practice at Element AI and was co-founder and director of Amnesty Tech. Sherif has over 13 years of management and leadership experience. He has a BSc in Civil Engineering from the American University in Cairo and an MPA from Harvard.

Subhro smaller

Subhro Ghosh

Sales Manager, India

Subhro is Sales Manager, India at Carbon Re. He has over 20 years of technical sales experience in heavy industry and is leading Carbon Re’s business development in India, the second largest cement market in the world.

Our Advisors

john shawe taylor

John Shawe-Taylor

John is Professor of Computing Science, UCL and Director of the International Research Center on Artificial Intelligence under the auspices of UNESCO.


Tabitha Goldstaub

Tabitha is Co-Founder of CognitionX and Chair of their AI Council for the UK Government’s Office for AI. She is the author of How to Talk to Robots: A Girl's Guide to a Future Dominated by AI.


Steve Evans

Steve is Director of Research, Institute for Manufacturing, University of Cambridge and Director of the Centre for Industrial Sustainability.


Jordan Zipkin

Jordan operated, founded and invested in startups and small businesses across a variety of geographies and industries. He is currently managing partner at Sawa Energy.


Richard Biggs

Richard has been leading the commercial growth of scale up tech companies for over 8 Years. He is currently leading Business Development for NetApp's AI offerings in Asia Pacific.


Steve Truong

Steve has been in the software space for over a decade, filling product, design, and engineering roles at both start-ups and big-tech firms, such as Google.


Sylvain Carle

Sylvain is Senior Director at SecondMuse Capital in Montréal, where he focuses on entrepreneurial climate innovation. He served as a General Partner at Real Ventures from 2014 to 2020, where he is still a Venture partner.

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