A techno-economic approachfor geologicalfor capacitystorageassessmentof CO₂ inandaustriaranking of potential options

Carbon dioxide capture and geological storage (CCS) is a means to drastically reduce greenhouse gas emissions. This paper shows an application to the Austrian context of a newly developed methodology for the assessment of geological reservoirs, based on expert opinions on the Schönkirchen Tief, Höflein, Schönkirchen Übertief, Reyersdorfer Dolomite, Aderklaa, Atzbach-Schwanenstadt and Voitsdorf reservoirs. Because of a lack in reservoir-specific research for the storage of CO, large uncertainties on the behaviour and use of the Austrian reservoirs exist. Therefore the potential of the reservoirs remains unknown.² Geological, technological and economic simulations are performed which integrate different uncertainties. The results show that there is a significant potential for CO storage in Austria. The total practical and matched capacity for Austria is assessed at about 120 and 40 MtCO respectively. An exploration² priority ranking, based on reservoir development probability, shows that the Schönkirchen Übertief reservoir² has the highest potential for storage and should be a primary target for further exploration.