Ability to adjust PV efficiency

[F21]

I am using the open-meteo method for PV generation forecase with the set_use_adjusted_pv option set to true. Without set_use_adjusted_pv, the forecasted production is very high (peaks at 8.5kW for a system that peaks at 5.2kW). With set_use_adjusted_pv enabled, the forecast peaks at 6.5kW, which is still quite high.

It would be great if there's an efficiency parameter that can be used to tune the forecast to account for things like shading.

[AtomicGrog]

What general configuration do you have for panels? my panel layout is far from ideal but have dialled it in quite well. Open meteo itself only provides the underlying weather prediction, panels - orientation, sizing, efficiency is all emhass configuration. I know it's possible to add custom panels as well (albiet i havent bothered). Here's a snippet of my config as an example, noting that it's nothing like my actual (I have a Sungrow hybrid 10kw single phase and 30 completely different panels), i tweaked the angles to have offset early shading. The 5 degrees for example to help the horizontal panels that get early shading. If i wanted to reduce string capabilities i'd probably reduce number of panels, albeit I've not had to.