retro-transposition

[kurt-rhee]

Hey all,

I was wondering if the ability to go retro-transpose POA information exists in pvlib. For example, if I have POA, surface azimuth and surface tilt could I back out GHI and DHI?

If this doesn't exist yet, is it something that would make a good addition to the library?

[cwhanse]

It is available in pvlib.irradiance.gti_dirint. There's no unique inverse function POA -> GHI; one has to assume a model for sky diffuse irradiance component, hence the name gti_dirint which uses the DIRINT model for sky diffuse.

[kurt-rhee]

Awesome, thank you @cwhanse!