Designed to optimize available space on building rooftops, the Sun Ballast Sail system allows for high energy yield even when the surface area is limited. The mounting system for photovoltaic panels on flat roofs, known as the Sail system, consists of various photovoltaic structures, each with an increasing height. This configuration enables the concrete ballasts to be placed side by side, completely eliminating the gap between the modules.

Depending on the project, the photovoltaic structures that make up this system can also be used in single rows, adjusting the spacing based on the layout and selecting the most suitable height. Available in two different versions, the 10° Sail system allows for up to three consecutive rows of panels, while the 5° tilt version—used in this installation—can accommodate up to six rows.

The 16 kW photovoltaic system visible in the photo was installed in the province of Bologna by our client Elettrosystem Lanni S.r.l., and the slate membrane on the roof posed no difficulties: Sun Ballast’s photovoltaic structures do not require any fixation holes, allowing for rapid and secure mounting without damaging the surfaces.