Incentivise investment in real climate action
We help the world's leading companies, investors, and project developers put capital into climate solutions that actually deliver.

Because when markets reward what works, more of it gets built.
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Sylvera exists to solve that
We provide independent carbon data and intelligence so you can:
Everything we build is designed for one thing - helping you make better decisions, faster.
Who we serve
For corporate buyers
Make confident purchasing decisions and avoid reputational risk.
For investors & traders
Understand quality, price, and delivery risk across portfolios.
For project developers
Prove credibility, attract capital, and sell credits at a premium.
For commodity producers
Differentiate low-carbon products and access new markets.
Meet the people behind our mission
Allister Furey
Allister co-founded Sylvera in 2020 to bring transparency and accountability to carbon markets. Prior to Sylvera, Allister spent over a decade advancing renewable energy technologies and co-founded KPS, a wind energy company acquired by Kitemill. Allister holds a PhD in Machine Learning and an MBA from London Business School.
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Matt Thomas
Matt joined Sylvera in 2021 and is responsible for all customer and business operations. He has a background in operational leadership in technology and other scale-up environments, and he holds a BA from Cambridge University.
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Jess Roberts
As VP Assessments at Sylvera, Jess is responsible for Ratings and assessment processes. Prior to joining Sylvera, she researched and designed geospatial products at Resilience Constellation. She holds degrees in Geology, Physical Geography and Geographical Information Science from the University of Edinburgh.
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Ben Rattenbury
With over a decade of experience in carbon markets, green finance, and climate policy, at Sylvera Ben is focused on the intersection of broader climate and market policies. A former Fulbright Scholar at Columbia University, Ben has collaborated with the UK financial sector, the UK Government, the World Bank, and the UN Climate Change Secretariat.
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Youtse Sung
Youtse is a marketing leader with deep experience across B2B technologies. At Sylvera, she leads brand and growth strategy to connect climate leaders with trusted carbon data. Her background includes leadership roles from software startups to scale-ups, with a focus on driving impact through storytelling and demand generation.
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Sean Barr
Sean joined Sylvera in July 2024, having previously held various commercial and technological leadership positions in the climate tech space. Sean holds an MBA with a focus on Social Impact and Innovation/Venture Capital/ Entrepreneurship from NYU Stern School of Business and a BS in Electrical Engineering from Penn State University.
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Gabrelus Glemza
Gabrielus is VP Product at Sylvera, leveraging his expertise in sustainable finance and product development. He holds a BA in Economics and Land Economy from the University of Cambridge, and a BSc in Accounting & Finance from the University of Warwick. Previously, he served as VP of Product at Argyle and was a Principal at Boston Consulting Group, focusing on sustainability and climate initiatives.
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Annalise Downey
Annalise leads teams operating at the intersection of product, data, and clients, translating Sylvera’s climate data and solutions into real world decision making and enabling customers to effectively implement and scale climate action. She joined Sylvera in 2020 and played a foundational role in developing the company’s first ratings and assessment frameworks. She brings a decade of experience at the intersection of climate, technology, and data, having begun her career in subsea remote sensing with a focus on coral reef monitoring and restoration.
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Alex Kullmann
Alex leads operational strategy and production across the business. Since joining Sylvera, Alex has played a key role in scaling the company’s commercial and operational functions to support its rapid growth. He brings experience spanning operations, strategy and business management, with a focus on building high-performing teams and enabling cross-functional execution in fast-growing technology companies.
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Rory Trevelyan Thomas
Allister co-founded Sylvera in 2020 to bring transparency and accountability to carbon markets. Prior to Sylvera, Allister spent over a decade advancing renewable energy technologies and co-founded KPS, a wind energy company acquired by Kitemill. Allister holds a PhD in Machine Learning and an MBA from London Business School.
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Shona Crawford-Smith
Shona joined Sylvera in 2022 as part of the Product Data team, having previously worked in regenerative agriculture. Shona now leads Sylvera’s Product Data and Partnerships function, working with other companies in voluntary carbon markets to help scale together. Shona holds a degree in Biology with Management from Imperial College London.
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