Hydro and GreenCap Solutions, a Norwegian environmental technology provider, are collaborating to launch a demonstration project to test GreenCap’s carbon capture technology in primary aluminum production. The initiative targets the challenge of capturing CO₂ from low-concentration point sources — one of the most significant hurdles in the aluminum industry.
“We need a cost-efficient solution to capture the process emissions from our primary aluminum plants, and we pursue several pathways of technology development to find the best one,” said Morten Landsgård, head of Electrolysis Decarbonization at Hydro Aluminium Metal. “GreenCap’s current demonstrators and their great work so far show that their solution has promising potential, and we are eager to test it as one of several carbon capture technologies now being evaluated for industrial-scale application.”
The direct emissions of CO₂ from the primary aluminum electrolysis process is approximately 1.5 kg of CO₂ per kg of liquid aluminum. However, the low concentration of CO₂ in the flue gases, around 1%, poses a major obstacle to effective capture.
GreenCap’s carbon capture process is based on physical adsorption using a solid sorbent, without the use of chemicals. The technology is energy-efficient, modular, and well suited for low-concentration sources. It has already been demonstrated in practical operation through Direct Air Capture (DAC) units and has been applied in CO₂ recovery solutions in agriculture, as well as in industrial applications requiring CO₂-free air.
GreenCap will validate its novel carbon capture technology at one of Hydro’s facilities, with support from Norwegian state enterprise Gassnova through the CLIMIT program, which promotes the testing, verification, and scaling of new carbon capture technologies. The project aims to verify the performance of GreenCap’s capture technology against real flue gas streams from industry, as well as to reduce risk ahead of full-scale implementation. A key objective is to document how impurities in the flue gas affect material performance and CO₂ capture efficiency.
“We are very excited to partner with Hydro to advance our carbon capture technology for industrial applications,” said Ronny Bergerud, COO at GreenCap Solutions. “This collaboration aligns perfectly with our strategy to collaborate with reputable industry leaders to scale our unique solutions.”
The project is being carried out in the period between May 2025 and May 2026.