SUN & SHADOW
STREAM computes how many hours of sunlight each part of your terrain receives, with real topographic shadow from the surrounding relief. Choose an instant, day, month or full year, set the latitude, and map sunlit versus shaded ground across the whole surface.
Sun and shadow analysis simulates the sun's path over an elevation surface and computes how long each point is lit versus shaded by the surrounding terrain. The result is a sunlight-hours map, not just a single shading image.
It matters wherever exposure drives a decision — solar panel siting, agriculture and greenhouses, landscape and building layout.
Compute sunlight duration per cell including topographic shadow cast by the surrounding relief.
Pick the time mode and set the latitude; STREAM sums exposure over the period you choose.
Rank and highlight the areas that receive the most sun across the site.
Add it as a layer, a GeoTIFF raster, or export the sunniest spots as a numbered 3D point (DXF) layer.
Yes. Sun & shadow analysis includes the shadow cast by the surrounding relief, so results reflect the real terrain, not a flat surface.
No — results are in sunlight hours (relative, clear-sky), meant for comparing areas against each other, not absolute energy yield.
Solar panel siting, agriculture and greenhouse planning, and landscape or building layout — anywhere sun exposure and shadow matter.
Free beta for Windows x64. Works fully offline with GeoTIFF, LAS/LAZ and DXF.
Download STREAM free