Renewable Energy Sources are the key technology to achieve a more sustainable world and a brighter future. Their increasing share in energy production each year proves their relevance in the Energy research context. Together with the production technologies however, many other challenges and fields arise, like distribution, storage and control techniques. The present study focuses on the employment and optimization of RES technologies in remote areas, often isolated from a large national electric network and thus defined off-grid. A well-engineered storage system is essential in these contexts, since due to the well-known intermittency of energy generation from RES, an interruption in energy production would mean an interruption of supply in the entire grid.