Founded in 2024, German climatetech startup Co-reactive has built a drop-in, continuous mineralisation process that combines captured CO₂ with minerals such as olivine or metallurgical slags to create carbon-negative supplementary cementitious materials (SCMs). These SCMs allow cement producers to cut clinker content and emissions while maintaining or improving strength and durability. The company works with CO₂ capture providers, raw-material suppliers, cement and concrete producers, and certification bodies to embed its solution in existing production lines. Current laboratory and pilot facilities are being scaled toward a 1,000-ton-per-year demonstration plant targeted for Q2 2026. In parallel, Co-reactive is planning first-of-a-kind industrial plants at “tens-of-thousands-of-tons” capacity starting in 2027, sited directly at cement and steel facilities. The €6.5 million seed round, supplemented by German federal climate-industry funding, provides the capital needed for these scale-up milestones.

Total raised

$8M

Funding rounds

1

Latest round

Seed

Latest activity

Jan 2026