Analysis of technical and economic parameters of a classic condensing coal power plant and other coal technologies (for example integrated gasification combined cycles) indicates that they are and they will be important for the energy security of many countries, particularly for Poland. Additional in Poland new investment are justified by the age of working installations, and the resulting necessity for the withdrawal of units with low environmental and economic standards. There are many reasons for which reduce the dynamics of the introduction of new technologies, leading to the difference between the best available technologies and technologies which are in use. Introduction of natural gas technology to the Polish electricity generation sector is a necessity. Autonomous systems can serve an important regulatory role. Gas and steam cycles with high flexibility next to reduce carbon dioxide emissions may also fulfill regulatory functions. Gas turbines can also provide the basis for the construction of accumulation installations. The main barrier may be instability in the gaseous fuel market, related with increased interest in this class of technology in many parts of the globe. Reasonable speed up of the transformation of the energy system requires a continuous expansion of knowledge in society. Only in this way the emergence of hostility toward one class technology and overestimate the role of others can be avoided. It is a task not only for the entire education system but also politicians and economic activists.