South Entrance of the National Museum of the American Indian

On May 1, I was walking by the National Museum of the American Indian (NMAI) and noticed two solar panels on the south side (Independence Avenue) of the building. The panels are 80-watt modules made by Sharp. @SmithsonianNMAI explained that they power the lights around the South entrance pictured to the left. Have you spotted solar at other Smithsonian museums in DC?