pvlib.forecast.ForecastModel.cloud_cover_to_ghi_linear¶
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ForecastModel.
cloud_cover_to_ghi_linear
(cloud_cover, ghi_clear, offset=35, **kwargs)[source]¶ 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).