Trading with electrical power is not the domain of few, chosen economic subjects anymore. My thesis describes in details contracts of this useful commodity. Rules of trade are determined by energy branch of an exchange. The same case is as well Power Exchange Central Europe, which determines commodity contracts and defines particular parameters and rules of trading. Part of the thesis is dealing with possible market positions and provides a product overview of energetic commodity. Final results of trading at PXE in recent years are analyzed and compared with real contracts on German exchange market. The end is focused on possible purchasing strategies of electrical power.