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We remove CO2 from the atmosphere – and store it permanently

Neustark turns this waste stream into a carbon sink. We've created and deployed a solution that mineralizes CO₂ in demolished concrete aggregate – thus permanently storing it and removing the CO₂ from the atmosphere.

What we do

Demolished concrete is the world’s largest waste stream. Neustark turns this waste stream into a carbon sink. We’ve created and deployed a solution that binds CO2 in demolished concrete aggregate through mineralization – thus permanently storing it and removing the CO2 from the atmosphere.

We work with biogas plants to source our CO2, concrete recyclers to store the CO2, and companies with ambitious climate strategies on their journey to net zero, who acquire our CDR (carbon dioxide removal) credits.

In a nutshell: we permanently remove CO2 and thus generate negative emissions.

We are currently scaling up across the globe – on our way to removing hundreds of thousands of tonnes of CO2 in this decade, and beyond that.

Get to know us, our team and our technology

The employees behind neustark who are driving permanent carbon removal (CDR) and scaling up CO2 storage in mineral waste.

Who we work with

Construction & demolition waste recyclers

We partner with you to pioneer a new field. Our technology is embedded at your site – alongside your existing business model and operations. Our partnership helps you to optimize your baseline.

CO2 sources

We partner with you to valorize your CO2 emission volumes, today. This helps you to generate additional income, helps us to capture CO2 to permanently store – and, ultimately, helps the climate.

Businesses with climate targets

We help you to achieve your net zero climate strategy by removing your hard to abate emissions. Neustark’s carbon removal (CDR) is permanent, verified, and measurable.

The process

process

Why we do it

By removing CO2 from the atmosphere and storing it in demolition concrete permanently, neustark's technology generates negative emissions.

Reducing the emissions we produce across the globe is crucial – but to reach our climate goals, carbon removal is also indispensable.

For a bright future of all generations on our planet.

Why carbon removal is important

How we do it

Neustark captures, transports and stores CO2 by working with source (e.g. biogas plants) and storage (i.e. concrete recyclers) partners located in close proximity to each other.

Our mineralization technology binds the CO2 in demolished concrete, thus removing it permanently.

Businesses at the forefront of climate action buy our CDR, which, alongside their reduction efforts, helps them to achieve net-zero.

It’s a win-win-win for our partners and clients, and ultimately and most importantly, the planet and all generations.

This is how it works

We enable permanent CO2 storage – for a bright future of all generations on our planet.

Latest news

Press release

17.06.25 8 min read

First-ever trade of negative emissions under Article 6 of the Paris Agreement

Swiss carbon removal specialist neustark and Norwegian financial services provider SpareBank 1 Sør-Norge launch pilot

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Press release

12.06.25 5 min read

CO2 capture and storage on the same site: now possible thanks to a collaboration between neustark and the Bereuter Group

The CO2 comes from the biogas plant in Volketswil, which is adjacent to the Bereuter Group's site.

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Press release

03.06.25 3 min read

Neustark enters the Italian market together with HOLCIM

Together with Holcim Italy, neustark is commissioning three CO2 storage facilities in the Milan region.

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Interested in connecting with us at neustark?

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Neustark Carbonated recycled concrete aggregate