which data you need. Solar radiation, electricty data,PV energy efficiency, PV surface temperature etc.

Dear Hussein: You can use the new version of HOMER Pro. It is connected to the satellite. You can find the technical and economic data and analysis.

@Can Coskum  I also want the data of solar radiation PV power output and temperature for forecasting purpose. Sir if possible kindly provide the link from where, I found these data. 

NREL has a multi-year data set in three US climate locations using the same set of PV modules, which have been thoroughly characterized.  Please see the following for a description of the data: http://www.nrel.gov/docs/fy14osti/61610.pdf  and contact [email protected] for FTP access to the 5-minute IV curve data.  Other resources with real-time PV production data include NREL's PVDAQ (http://maps.nrel.gov/pvdaq), the Australian Desert Knowledge Center (http://dkasolarcentre.com.au) and California's CSI 15 minute interval data (http://www.californiadgstats.ca.gov/downloads/).

http://re.jrc.ec.europa.eu/pvgis/apps4/pvest.php

http://www.soda-pro.com/

PVGIS solar estimation utility and SoDa will provide most of data you need. 

Thank you for your time and response. but I need real case studies provide power generated by the rooftop solar panel(not the climate data and solar radiance data). Ideally, I need some domestic customers with geographical information about where the solar panels are installed and how much power they are generating. 

http://www.elia.be/en/grid-data/power-generation/Solar-power-generation-data/Graph