The Structural Imperative for 100% Green Energy in Small Island Microgrids. 1. Thermodynamic Superiority of Distributed Resources Distributed renewable platforms—integrating solar photovoltaics, run-of-river micro-hydro, and biomass—bypass severe thermal conversion penalties. By generating electricity adjacent to consumption hubs across localized microgrid loops, island grids maximize end-to-end efficiency and eliminate line-loss compounding. 2. Total Elimination of Import