John Hoeschen runs the landmark St. Paul Corner Drug on Snelling Ave. It has been a local institution for nearly 100 years. As a business that promotes energy conservation and clean technology, it was a natural fit to install a solar system that not only helps power his building, but proves the point that good economics can be realized with a solar energy system installed on the roof. Sundial designed and installed a new technology solar PV system that has transparent reflectors which cast a blue light down below the array.