Clarification on Albedo Definition in “Project Settings” vs “Bifacial System”

[Irakli Bezhuashvili]

Dear PVsyst Team,

I would appreciate your clarification regarding the definition and use of the Albedo parameter in PVsyst.

In the software, the Albedo value appears in two different locations:

1. Project Settings → Site → Albedo

2. System → Bifacial System → Albedo

Could you please clarify:

• What is the functional difference between these two Albedo inputs?

• In bifacial simulations, should both values always be identical for consistency?

kind regards,

Irakli

[Linda Thoren]

Hello,

The far albedo in the project settings, will be considered in all projects and correspond to the albedo of the surrounding of the project. 

The albedo in the bifacial system window is indeed only set for bifacial systems and correspond the the albedo of the ground just underneath the modules. This is not necessarily the same as the far albedo of the surrounding. 

Kind regards