The conversion of electricity into energy and its many facets is so extensively used that it would be difficult to enumerate the innovations relating to the simple fact of an electron being detached from its atom and forced to move along the conductor. This discovery has allowed humanity to use resultant factors to make machines that allow it to generate power, so that it can drive processes that improve the quality of life for humans and animals alike. Electricity and its applications are expanding and becoming more crucial to humanity as it evolves and there are not many aspects of our existence that are not touched by the principles embodied therein.
The flow of electrons via conductors results in the production of magnetic fields that man has learnt to control, and in doing so has invented and innovated technology that can generate forces to work machines that have extensive uses: turning wheels that provide mechanical power, controlling mechanisms within machines, generating counting systems that allow the development of computers, forcing other atoms and molecules to align themselves so that they can be detected and identified in scanners, directional control of flowing matter so that TVs can transmit information, levitation of mass to provide friction-free transport. In the future, the magnetic field refinements may be innovated to contain hydrogen isotopes to facilitate fusion or force charged particles directionally to provide trust for ion engines.
Another property of moving electrons is the generation of heat and that characteristic has so many uses that it barely needs mention. Modern life without electricity would be impossible and would return humanity to prehistoric modes of existence.