Direct Normal Irradiance (DNI): Inter-comparability of Weather Databases in Context of India (original) (raw)
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In recent years India has implemented approximately grid connected solar power project of the cumulative capacity of around 2600 MW. Still the solar power segment of the country is dealing with the lot of difficulties viz. unavailability of measured solar radiation data, long term operating history of solar PV technology in Indian climatic conditions, lack of domestic manufacturing of solar PV modules, concentrating collectors and receivers, inverters, etc. which makes impact on the bankability of the solar power project. Due to the lack of the long term measured solar irradiance (GHI and DNI) project developers are still using solar radiation data from multiple databases which are mostly satellite databases of different resolution. Due to intermittence of the nature of solar irradiance and variability of available solar radiation databases there is significant uncertainty in the energy yield estimation and hence the financial feasibility of the solar power projects. This study pres...
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