Member - Neustark

Enabling circular and carbon neutral production of concrete by turning CO2 into minerals.

Type Startup or self-employed
Founded 2019
Company Size 6
Member Type
Founders Johannes Tiefenthaler & Valentin Gutknecht
Headquarters 3066 Stettlen, Switzerland
Social network


Concrete is the most widely used manmade material worldwide. It essentially consists of aggregates (sands, stones) and cement. The production of cement is responsible for 4% of global greenhouse gas. Neustark is developing a technology and value chain that re-captures this carbon from the atmosphere and permanently reintroduces it to the concrete after demolition at the end of its lifetime. Once our partnering concrete producers have carbonated the demolished concrete using our technology, they reuse it as a replacement material for mined primary aggregates. Our technology thus closes the carbon cycle of cement production and enables the production of truly circular concrete.
Headquarters 3066 Stettlen, Switzerland

SDG’s of application

The Sustainable Development Goals are a call to action to end poverty, protect the planet and ensure peace and prosperity everywhere.
Clean water and sanitation
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Affordable and clean energy
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Industry, innovation and infrastructure
SDG 9 icon
SDG 11
Sustainable cities and communities
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SDG 12
Responsible consumption and production
SDG 12 icon

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