[en] In spite of a series of catastrophes including those of global character, the power of nuclear fission is considered as a sole source of energy which provides the long-term industrial development of mankind. The development of nuclear power results in earth contamination with radioactive wastes. However, another way of nuclear power development is possible which excludes the reactor runaway and accumulation of toxic and radioactive elements. This way permits transmutation of long-lived wastes. Such a safe and ecologically clean nuclear power is based on obtaining a new kind of fission materials -uranium 233. A concept of electrical nuclear breeding and state of this work development in Kharkov Physico-Technical Institute is considered. 24 refs., 1 tab., 3 figs