Modelling Solar rooftop potential in Urban places?

Some thoughts. On the technology side, try pvlib written in python:

Regarding data sources — and these are unfortunately oriented towards Germany and documented in German:

  • Zentrale Stelle Hauskoordinaten, Hausumringe und 3D-Gebäudemodelle (ZSHH) (more here)

  • Happ, Marina, Julia Wielgosch, and Alex Kalevi Dieke (December 2022). Open Data bei Katasterdaten: Status quo, gute Beispiele und Herausforderungen [Open Data in cadastral data: status quo, good examples and challenges] (in German). Bad Honnef, Germany: Wissenschaftliches Institut für Infrastruktur und Kommunikationsdienste (WIK) [Scientific Institute for Infrastructure and Communications Services]. (also covers PV potentials)

Somewhere in the middle is the European‑wide SLiCE model which supports building-integrated photovoltaics (BIPV) as well. See this recent openmod lightning talk (which will be uploaded to YouTube as soon as I get the okay from the presenter):

and also this literature:

The plan is to release SLiCE under suitable open licensing sometime this year  — although that decision that rests with the European Commission however.

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