Ocean Carbon Capture Concrete SeaCrete Enters Service in Norway: Each Cubic Meter Permanently Sequesters 50kg of CO2

On August 14, 2028, Norwegian building materials company CarbonLock announced the first large-scale commercial deployment of its SeaCrete ocean carbon capture concrete at a commercial construction project in Oslo.

SeaCrete's production process differs fundamentally from traditional concrete. Conventional cement production is the world's second-largest carbon emission source, emitting approximately 3 billion tons of CO2 annually. SeaCrete does the opposite — it extracts dissolved CO2 and calcium ions from seawater, synthesizes calcium carbonate aggregate through electrochemical processes, and mixes it with specialized binding materials to produce concrete.

CarbonLock CEO Erik Lindqvist explained that each cubic meter of SeaCrete concrete permanently sequesters 50 kilograms of carbon dioxide. "Traditional cement production emits about 400kg of CO2 per cubic meter. SeaCrete isn't just zero-emission — it achieves negative emissions. It's a carbon sink, not a carbon source."

SeaCrete currently costs approximately 1.8 times traditional concrete, but CarbonLock expects it to reach cost parity by 2030 as the EU's full carbon tax implementation proceeds (currently 90 euros per ton).