21.1.2026

Castrén & Snellman joins forces with Carbonaide to accelerate low-carbon innovation

As part of its sustainability work, Castrén & Snellman starts cooperation with Carbonaide, a Finnish startup transforming the construction industry and voluntary carbon markets. C&S will purchase the first certified carbon credits created through Carbonaide’s proven technology for CO₂ mineralization in concrete. 

Carbonaide has developed a technology for utilising captured CO2 in the curing of concrete. This reduces the emissions in concrete production and transforms the concrete into a carbon sink. Most importantly, Carbonaide’s technology improves production efficiency and enables cement savings in concrete production, reducing both emissions and costs.

Concrete is one of the most used and most versatile materials in the world. It is also a major source of GHG emissions. Low-carbon concrete is therefore an essential technology in reaching global climate targets.

Supporting innovation through voluntary carbon markets

For Castrén & Snellman, the cooperation with Carbonaide marks a new step in the firm’s involvement in the voluntary carbon market. With the help of low-carbon energy, C&S has cut the emissions from its operations and energy use close to zero. To complement its emission reduction efforts, the company supports third-party activities that help combat climate change. By purchasing Carbonaide credits, the law firm can speed up the adoption of a crucial technology for a low-carbon future.

Anna Kuusniemi-Laine, ESG Partner at Castrén & Snellman, says: 

The mitigation of global warming calls for rapid emission reductions, but also for new technologies that can capture and store carbon permanently at scale. Carbon credits are a vital tool in financing the solutions that the planet acutely needs. Together with Carbonaide, we can drive the development of the voluntary carbon markets. We are proud to partner with a research-based Finnish startup that has the potential to transform the built environment into a carbon sink.

Tapio Vehmas, the CEO of Carbonaide, says: 

The secret to economically viable carbon-negative concrete lies in using CO₂ to enhance production while storing it permanently. In addition to offering reliable carbon storage for credit buyers, the credit sales open a new revenue stream for both Carbonaide and concrete manufacturers who are Carbonaide customers, making green concrete profitable.

Read more about Carbonaide.

Read more about Castrén & Snellman’s activities on the voluntary carbon market. We disclose our emissions and emission reductions annually in our sustainability report.

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