pvlib.forecast.ForecastModel.cloud_cover_to_ghi_linear

ForecastModel.cloud_cover_to_ghi_linear(cloud_cover, ghi_clear, offset=35, **kwargs)

Convert cloud cover to GHI using a linear relationship.

0% cloud cover returns ghi_clear.

100% cloud cover returns offset*ghi_clear.

Parameters:

cloud_cover: numeric

Cloud cover in %.

ghi_clear: numeric

GHI under clear sky conditions.

offset: numeric, default 35

Determines the minimum GHI.

kwargs

Not used.

Returns:

ghi: numeric

Estimated GHI.

References

Larson et. al. “Day-ahead forecasting of solar power output from photovoltaic plants in the American Southwest” Renewable Energy 91, 11-20 (2016).