The present invention pertains to carpet and method of making it. The material comprises a preservative and a carrier. The anti-fungal component is a combination of goldenseal root powder with ipe roxo powder and poke root powder. Shelves and support modules include user interfaces. The solar power assembly can be rolled up for transport and then unrolled for installation on a surface, such as the roof or side wall of a building or other structure, by use of adhesive andor other types of fasteners.