This system utilizes a powerful 120KWH POWERWALL lithium battery to store solar energy generated from a GSL PV solar panel system. The purpose of this innovative system is to provide efficient and sustainable energy storage for the residents of the Dominican Republic. Residential grid tied, off-grid homes, and cabins, solar panel kits and components such as racking, charge controllers, inverters and cabling. We offer a variety of technologies such as lithium, flooded and gel AGM from. Highjoule offers a wide range of energy storage solutions including C&I energy storage systems, base station storage, home energy storage, and more. Your path to. In Dominican, an increasing number of households, industrial and commercial enterprises are adopting solar or backup power solutions.