The discovery of electrical conductors that carry loss-less currents at liquid nitrogen temperatures and above, high-temperature superconductors (HTS), inspired the imaginations of scientists and engineers in an unprecedented way. It culminated in a broad search for an understanding of their basic phenomena and properties, but also for new classes of the HTS. The availability of these materials created novel ideas of their use for effective and economical generation, transport, and use of electric energy. YBaCuO and related REBaCuO HTS compounds still belong to the most attractive workhorses. This contribution intends to illustrate the efforts to manufacture from these HTS bulk monoliths, wires, tapes, or conductors, which would be needed for novel components and devices for electrical and power engineering, devices that offer not only an effective use of energy but also broad environmental benefits and, furthermore, help to safe resources. The research and developments discussed are mainly focused on efforts in Europe.