Small Solar Powered Cabin (Shell)

I made a shell of a solar powered cabin with a small garage that can accomodate bikes. It does not have any interior exept the lighting. The material on the render is the actual material in the file, but I couldn't get the viewer to load the glass material for solar panel and the window. There are individual cells in the panel. The grass in the rendering is not present as it went over the file size limit. It was created with the hair particles in blender and these are the settings: *Particle* [V]Hair Dynamics {Mass: 0.3--Stiffness: 0.7--Random: 0.2--Quality: Steps: 10} Children: Simple{Render: 100--Random: 0.2} Kink: Curl{Amplitude: 0.01} *Material* Hair BSDF{RGB(0.114/0.8/0.094)}