Sun path analysis tool
TOPOLUMA draws the day's sun path over a 3D model of the site and its surroundings, in the site's own time zone, for any date.
What you get
- Any date and time
- Solstices and equinoxes are one click away; a slider moves from sunrise to sunset.
- Real surroundings
- Terrain, OpenStreetMap buildings, generated trees and bridges cast shadows.
- Accurate positions
- NOAA solar equations; times are worked out for the site's location.
- Insolation sheet
- One panel per date with the model, the compass ring and the sun path, as PDF, PNG, JPEG or SVG on A4 to A1.
How to do it
- Generate the preview.
- Open Sun and pick a date.
- Move through the day and orbit the model.
- Download the insolation sheet.
Limits to know
Building heights come from OpenStreetMap (or a default height when none is mapped), so shadows of individual buildings may differ from reality. More on the data and accuracy page.