In this article, the economic and ecological benefits of selected advanced technologies for electricity production based on coal and natural gas are evaluated. Among the analysed technologies are integrated gasification combined cycle (IGCC) systems, supercritical coal-fired power plants, multi-fuel hybrid cycles, and natural gas combined cycles. In addition, as a complement to coal technologies, CO2 capture and storage installations are adopted. The main indicators evaluated are the unit carbon dioxide emission and the break-even price of electricity. The analysis took into account, among other factors, the existing support mechanisms for ecological technologies, primarily in the form of the European Union (EU) Emissions Trading Scheme.
The analysis shows that the systems integrated with CO2 capture can be competitive compared to systems without capture. Especially interesting in this context are IGCC systems integrated with carbon capture installations. The results are, however, affected by many factors, such as the fuel price, operational reliability, and auxiliary power need. The influence of these factors is evaluated in this article both qualitatively and quantitatively.
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