St. Croix. Whether you’re a commercial or public sector institution in this region or a homeowner, ProSolar Caribbean can help you save big on energy costs in addition to being prepared with reliable energy for the next hurricane that heads our way. ProSolar Caribbean is the premier Solar Energy company serving the U.S. Virgin Island, and we have been for over a decade. We offer a wide variety of renewable energy products and services. We can help you reduce energy costs, go completely off-grid, or both!