The paper is dedicated to Poland's energy policy which is aimed to ensure proper development of extraction, transportation and storage infrastructure and to boost investments in a modern energy-save technologies and products, as well as limiting dependence on supplies from other countries. It covers some retrospective aspects, when Polish authorities put energy security among main tasks of the state. They were focused on the problem of stability and predictability of supplies due to dependence on import from one direction – Russia. The paper addresses also the aspects related to what has happened after Poland became a full fledged member of the EU and how it changed their perception – the European Union to become as a guarantee of the energy security.