Listening to discussions in professional circles and among policymakers, one can easily notice that the topic of energy security is often used as a reason to justify certain decisions or point out the problems existing in the sector. Energy security is frequently associated with energy “independence” – a condition that only a few countries in the world can claim to have achieved.

Every winter, one of the most actively discussed issues of energy policy – both on TV and in professional circles - is natural gas. Prices and supply conditions are frequently part of the political debate. The main reason behind such active discussion is energy security concerns. What is energy security?