Directed energy weapons (DEWs) are a type of electromagnetic or particle technology which use energy, as opposed to a physical projectile, to strike a target. DEWs have been under development for many decades. Despite initial enthusiasm and research around this technology, progress on DEWs has faced a range of technical and operational challenges. Yet, in recent years, the technology has matured and there has been an increase in funding of these capabilities.

The article explores the potential of space based solar power, a potentially long term sustainable method of supplying clean energy to Earth.