For years Alumero develops and produces flat roof systems which are aerodynamically optimized to enable the work with low vertical superimposed loads. Once again we raise the bar for flat roofs with our new generation Aerocompact S, for a module orientation to the south, and Aerocompact +, for a module orientation to the east / west. By optimizing the material inventory the systems are exceedingly cost-effective. Furthermore special attention was paid to the space requirements of transportation and warehousing. Thus, one truck could transport the substructure for about 200 kWp.