This paper proposes a novel framework to identify the origins of ultra-high-energy cosmic rays (UHECRs), including those beyond the GZK limit, and explores a potential system for extracting usable energy from them. It redefines cosmic voids as active energy regions linked to dark matter interactions, cosmic strings, and higher-dimensional inflows. A phase-synchronized magnetic reconnection model is introduced to explain particle acceleration and propagation. Additionally, the study outlines detection, capture, and conversion mechanisms, bridging astrophysics and future energy engineering.