Unfortunately in 2024 with extremely inexpensive solar cells, I don't see much future for this technology. Even fixed latitude tilt angles are coming into question given the modest cost increases that they create versus a flat or a vertical panel. It costs more to blow glass into vacuum panels than to acquire PV area.

Much of the developing world latched on to solar concentrator water heaters 10, 20, or 30 years ago, and they were common in a backpacking trip through China a decade back. It's good tech, depending on your climate, but it seems to have been superseded.