BioCirc opens world’s largest biogas-based carbon capture facility in Denmark

BioCirc on June 23 opened a Vesthimmerland CCS unit that will capture 32,500 tonnes of CO2 a year from biogas. The site is the world’s largest biogas-based carbon capture facility and the first of five CCS installations across its biogas portfolio.

The Vesthimmerland site will send liquefied CO2 to INEOS’s Greensand Future storage project in the Danish sector of the North Sea, where the gas is planned for permanent sequestration in the Nini West reservoir 1,500 to 1,800 metres beneath the seabed. BioCirc says the new site will make it the largest supplier of biogenic CO2 to Greensand Future.

BioCirc’s wider rollout covers five of its eight biogas plants and is slated to run from 2026 to 2032, with a target to capture and store up to 1 million tonnes of CO2 over that period. BioCirc says that volume is equivalent to the direct annual emissions of more than 130,000 Danes. The project is backed by Denmark’s NECCS fund, which supports over DKK 130 million of annual funding, while the Danish Energy Agency says the fund supports projects expected to capture and store 160,350 tonnes of CO2 a year from 2026 to 2032 across three projects.

Storage operations are expected to start in mid-2026, with initial capacity of 400,000 tonnes of CO2 a year and a later buildout to 4 million to 8 million tonnes a year. DNV certified the first CO2 storage site for Project Greensand in September 2024.

The inauguration in Vesthimmerland drew BioCirc chief executive Bertel Maigaard and Vesthimmerland Mayor Per Bach Laursen.