Comparison of PV performance with local insolation

[Trevor Lewis]

Hello, I've had my 3.5 kWp system since 2011, and have kept daily data. I have only recently come across the Sheffield Microgen site, and I have enthusiastically joined and uploaded 9 years of readings to it. Until now, I had been comparing monthly performance with Met Office sunshine data, mainly to check whether there was any degradation in the system. I live near Norwich, and it seems that the Met Office sunshine data for my part of the world comes from only a few stations, and those some distance away from me.

The ability now to compare performance with (sort-of) neighbours on this site removes the main need for the sunshine data, but I would still be interested to learn of any other source of local sunshine data. (For many years there was a private station at Buxton, Norfolk not too far from me which published daily and montly data, but that has now ceased.)

Can anyone help?

Trevor Lewis