Polaris Carbon Storage Project

The Polaris project, led by Horisont Energi, is being developed as a carbon storage site beneath the Barents Sea, about 140 kilometers off Hammerfest in northern Norway. It is designed to store more than 3 million tonnes of CO₂ per year in a saline aquifer located roughly 1,400 meters below the seabed, within a license area of about 1,000 square kilometers. The reservoir is 70–120 meters thick and lies under approximately 250 meters of seawater. Polaris is closely linked to the Barents Blue ammonia project, with captured CO₂ from blue ammonia production in Hammerfest planned for transport and storage in the offshore formation. A storage license was granted by the Norwegian Ministry of Energy in 2022, and pre-survey work has already been completed, confirming the reservoir’s suitability for long-term CO₂ storage. In 2025, the company cancelled the project.