Johannes Tiefenthaler
CEO/Co-Founder

Neustark utilizes mineralization technology to convert CO₂ emissions from biogas plants into stable minerals within recycled concrete, permanently storing carbon and generating negative emissions. This process addresses the significant challenge of CO₂ accumulation in the atmosphere by transforming demolished concrete, the world's largest waste stream, into a carbon sink.
Raised to date
$69MRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
across 1 round

BEDPHSF$69M · Growth
Announced Jun 2024 · from article date
Disclosed cumulative: $69M
CEO/Co-Founder
Accumulation of CO₂ in the atmosphere is a significant environmental challenge. Demolished concrete, the world's largest waste stream, presents an opportunity for carbon sequestration but lacks effective methods for permanent CO₂ storage.
Neustark provides a mineralization technology that transforms demolished concrete into a carbon sink. The technology captures CO₂ emissions from sources like biogas plants and permanently stores them within recycled concrete aggregates. This mineralization process converts the captured CO₂ into stable minerals, effectively removing it from the atmosphere and generating negative emissions. Neustark partners with concrete recyclers to embed its technology at their sites, valorizing CO₂ emission volumes and enabling businesses to achieve their net-zero climate strategies through verified carbon dioxide removal (CDR).
Neustark targets construction and demolition waste recyclers, CO₂ sources such as biogas plants, and businesses with climate targets seeking verified carbon removal.