Off the Grid (1970)

Guy is a brilliant scientist. He spent most of his life trying to create an energy source that can provide an expensive clean energy to poverty stricken countries across the world. That was until his employers attempted to take his break through discovery and Weaponized it. Instead of letting that happen guy decided to take his research and disappear - Off the Grid, having to change his identity he now lives a quiet life outside of small village in Europe. He spends most of his time alone working on a small cabin he built himself. From time to time he helps the locals even tutoring a brilliant young student. His quiet existence is interrupted when his former employers discovered his location.