The level of participation of communities in decentralized energy solutions is a fundamental challenge for energy transition processes. The Ayllu Solar project ( www.ayllusolar.cl ) developed during six years has created economic opportunities for farmers in Chile’s Arica and Parinacota region, helping them deliver their own sustainable solar energy solutions. That’s turned the region into a solar-based sustainable development hub, in both urban and rural environments. This chapter summarizes both the technical challenges faced in the development of micro-grid solutions and the implementation of the co-construction methodology for community participation and engagement. Six community productive projects under a Multi Energy System (MES) approach were developed and implemented with reproducible and scalable characteristics.