One of the greatest challenges of the century is to tackle the threat of climate change.

One way of substantially reducing the concentration of carbon dioxide in the atmosphere is to sequester it into the bedrock. Reykjavik Energy has been developing this method since 2007 at the Hellisheidi Geothermal Power Plant in collaboration with ON Power, the University of Iceland and foreign research and scientific institutions. The method is known as CarbFix.

The CarbFix project has three main targets:

  • To deepen understanding of what happens to carbon dioxide that is re-injected into the bedrock in the long term.
  • To develop technology to permanently sequester carbon dioxide in the bedrock.
  • To publish and disseminate the results of research and experiments so that they can be of the broadest possible use.

Loftmynd af Hellisheiðarvirkjun

Carbon dioxide accounts for 0.42% of emissions at the Hellisheidi Geothermal Power Plant. The carbon dioxide is separated from the steam when emitted and then mixed with water – a bit like when one makes soda water – and the water is then pumped into a borehole. The carbon dioxide is sequestered in the basaltic bedrock at a depth of one kilometre.

This sequestration of the carbon dioxide in rock is a known natural process in geothermal production fields and appears as white spots or cavities in the rock.

The CarbFix project has received grants over the years, most of which have come from the research and scientific programmes of the European Union.

The projects hosts its own website. Click here to go to the CarbFix project website.

One of the offshoots of the CarbFix project is the GECO project. Click here to go to the GECO project website.

CarbFix is a cooperation project between Reykjavik Energy, the University of Iceland, Earth Institute of Columbia University in the U.S., CNSR in France, NanGeoScience of University of Copenhagen in Denmark and AMPHOS 21 Consulting in Spain.