Im considering installing a small - Maybe 1Kw set of panels into a location but I would like to get an idea of what their actual performance would be like before I do the installation. Its a strange location with some over hanging trees and some shading by neighbours fromntine to time but it could help provide some redundancy. Understanding of it could produce enough or whether a mains powered UPS is required would help before I pick and buy a solution.

Im wondering what is a cheap way to test out what Im actually going to be able to capture?

I was thinking of putting a small panel in place for a year and seeing how it performs. But I realised I might need a controller amd logger as well as and something to dunp the energy captured.

What would be the simplest / cheapest way to do this?