Tree Transparency database for modelling in Energy Simulaitons

Im relatively new to energy modeling and I have a question regarding choosing the “tree canopy transparency” value.
Is there a database or is it assumed based on experience?
I would appreciate help regarding modeling trees for energy simulation too.

Hi - this sounds like a question that is more related to LadybugTools such as Dragonfly…
It’s probably better to ask these type of questions on the dedicated forum here: