Run model chain with weather

[HangW T]

Hi,

I am completely new to pvlib.  I am trying to run model chain with TMY's GHI, DHI, DNI data:  

ModelChain: name: None clearsky_model: ineichen transposition_model: perez solar_position_method: nrel_numpy airmass_model: kastenyoung1989 dc_model: pvwatts_dc ac_model: pvwatts_inverter aoi_model: physical_aoi_loss spectral_model: no_spectral_loss temperature_model: sapm_temp losses_model: pvwatts_losses

I understand that the default clear sky model for model chain is incichen, but since I do not need to use clear sky model in my case, does it mean the information highlighted in yellow above is dummy?

Thanks,

HW Tong

[cwh...@sandia.gov]

Hello HW,

ModelChain.clearsky_model is only used if the input weather data do not contain DNI. If DNI isn't provide, the clearsky model is used to set an upper bound on an estimated DNI.

Cheers,

Cliff