**6. Conclusions**

The study presents one of the possible options to select the suitable form of carbon capture technology (CCT) that would meet the sustainability indicators (technical, environmental, and economic) in the Czech energy industry. The presented paper combines environmental and economic variables to conclude the viable choice of carbon capture integration into the brown coal power units. The comparison of both systems concludes into the following points:


Although it seems that IGCC-CaL integration would be the most suitable option for the carbon capture, thermal efficiency decrease can cause the additional increase in CAPEX and OPEX, which can also result in some environmental burden. On the other hand, the adsorption process can be optimized to enhance the environmental performance with relatively low investments.

It must be stressed that the decision-making process of CCT integration is affected by many other factors such as political decisions, social acceptance, or the economic statements of the energy industry and companies of the Czech Republic. This study presents how an environmental tool such as LCA and economical computation of cost effectiveness may help to contribute to the extensive feasibility study and complex decision-making process.

Further research of CCT technologies integrated into the Czech energy conditions could enhance this research and consider robust techno-economic and environmental analysis of all three considered technologies: post-combustion ammonia scrubbing, post-combustion capture by activated carbon adsorption, and pre-combustion IGCC-CaL.

**Author Contributions:** Conceptualization, K.Z. and A.C.; methodology, K.Z., A.C., J.Š., M.V., and V.K.; formal analysis, K.Z.; resources, K.Z. and M.V.; data curation, K.Z., J.Š., L.P., and M.V.; writing—original draft preparation, K.Z. and M.V.; writing—review and editing, K.Z., A.C., J.Š., M.V., and L.P.; supervision, V.K. and A.C. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Acknowledgments:** This work was supported by the Technology Agency of the Czech Republic, project number TH03020169 and project number TA02020205, and by institutional support from the University of Chemistry and Technology Prague.

**Conflicts of Interest:** The authors declare no conflict of interest.
