Lead halide perovskite nanocrystals (NCs) are promising materials for next-generation optoelectronic devices due to their exceptional optical properties. However, poor long-term stability remains a major challenge. In this study, formamidium lead bromide (FAPbBr3) NCs are embedded in a mesoporous silica matrix to enhance stability and explore exciton transport mechanisms. These NCs display a narrow photoluminescence (PL) linewidth of 25 meV at 7 K. The absence of surface ligands leads to reduced interparticle spacing, favoring non-radiative F & ouml;rster resonance energy transfer (FRET) as the dominant exciton transport mechanism. Using time-resolved and spectrally-resolved PL spectroscopy at cryogenic temperatures, it is observed significant spectral redistribution over time, indicating energy transfer from higher-energy to lower-energy NCs. To quantitatively interpret these dynamics, a theoretical model based on a 2D array of coupled NCs, incorporating F & ouml;rster’s theory to simulate exciton diffusion is employed. This model successfully reproduces the experimentally observed PL decay behavior, confirming FRET-mediated exciton transport with an upper-limit efficiency close to 100% and a transfer rate of 105 ns-1. These findings offer key insights into energy transfer processes in ligand-free perovskite NC systems and underscore the potential of mesoporous silica matrices for improving stability and enabling control over excitonic interactions in perovskite-based optoelectronic applications.