I think some institute like weather forecasting may records the solar data.

You can use pyranometer with data logger for recording solar radiation.

There are a number of sources for this information on this webpage,

https://hub.globalccsinstitute.com/publications/concentrating-solar-power-india/42-available-data-india

Alternatively, you could also use the system advisor model (SAM) tool from the NREL site.

Thank you Dhruv kler for your detailed answers. It is very useful to me.

You can use the METEONORM software.

https://www.meteonorm.com

Take a look:

https://www.nrel.gov/international/ra_india.html

Yes, I also prefer NREL as the answers from Mohamed Azab & Yasser A. Abdel-Hadi .

Thanks a lot!

My company Solcast offers FREE access to solar radiation data for researchers like yourself, read more at:

https://articles.solcast.com.au/solar-data-api/free-access-to-solar-irradiance-data-for-non-commercial-research-use

And

http://solcast.com.au

We look forward to supporting you & other researchers on ResearchGate.

I m interested to getting hourly solar data for Patan, Gujarat, India from 1 Jan 2019 to 31 Dec 2019. Can I will get every data?

Hemin Vardhilal Thakkar we can help, send me an email at [email protected]

Following

https://www.meteonorm.com

Thanks to Nick for his support.