Electrical energy is absolutely necessary for an advanced society. In this context use of classical combustibles (coal, petroleum, nuclear) is limited, e.g. by sources exhaustion. Some other undesired phenomena are commented and the solution - use of renewable energies is discussed. At the European level strategic objectives are presented for each case, even the cost target for 2015. In the same time distribution of electrical energy is subject to modernization with intensive promotion of information technologies. Some new ideas are presented, related with numerical treatment of information in new systems with multiple and distributed sources.