Switzerland-based Neustark captures CO2 emissions from biogas plants during the conversion of biogas into biomethane. The company then works with construction material recyclers to inject the captured CO2 into demolished concrete during recycling. Neustark accelerates the mineralization process during recycling to convert CO2 permanently into limestone for zero-carbon concrete production.
Key customers and partnerships
In April 2022, Neustark signed a 10-year carbon dioxide removal (CDR) credit agreement with Verdane . In August 2022, Neustark entered into an agreement with UBS to remove 29,500 tons of CO2 from the atmosphere over 13 years.
Neustark has also partnered with several companies to store the captured CO2 before the mineralization process. In May 2023, Neustark, in partnership with Alluvia and Vigier Beton Seeland Jura, began operating a storage plant in Switzerland with a capacity of 1,000 tons of CO2. The company also deployed a silo storage plant with Spross Transport & Recycling and constructed a next-gen mobile storage site with Holcim.
In February 2024, the company entered into a multi-year agreement with Microsoft to capture CO2 from the atmosphere and store carbon in recycled construction materials.
In April 2024, Neustark entered into a multi-year offtake agreement with NextGen CDR, the world’s largest diversified long-term carbon removal portfolio, to purchase CDRs generated by Neustark from mineralizing CO2 in demolition concrete at 18 sites across Europe.
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