Difference between EPW and STAT File Components' horizontal and diffused radiance

ladybug-tools
1

Dear all,

I have been performing a solar insolation study on a building. And I have found two components: LB epw Import and LB STAT import. When I used radiance outputs from STAT into sky matrix, the annual results are almost double than the results produced from LB epw Import outputs for certain positions. What do you think is the issue? What is the difference between direct clear radiance and direct radiance? And which one should be used?

image
image823Ă—667 89.8 KB

Thank you so much!

Here is the file
Solar Analysis_STAT vs EPW.gh (40.2 KB)

2

“Clear radiance” is referring to radiation values assuming clear sky (i.e. no cloud), which would explain why the results are higher in value.

1 Like