In "Quantum Engine, " Zoltan J. Kiss builds upon the revolutionary ideas he introduced in his previous books, "Energy Balance of Relativity" and "Quantum Energy and Mass Balance, " and provides a blueprint for solving Earth's energy crisis. In this, his third book, Kiss takes the discussion of quantum energy and mass-energy balance to its logical conclusion-the quantum engine. Kiss's calculations prove that acceleration generates electricity. This energy comes from the transformation of blue-shift energy into electron flow. The quantum impact of Earth's gravitation on the speeding particles results in the generation of an electron surplus, a source of electricity. Kiss's groundbreaking original research demonstrates that this mass-energy balance approach is the key to unlocking Earth's energy future. The transformation of mass into energy and the retransformation of energy into mass can produce a limitless supply of energy via the quantum engine-our future source of energy.