Watt meter to test individual panels

[Jah-de-blah-0m]

I'm looking a simple watt meter that can test individual panels and give a readout of wattage being produced per panel.
I have multimeter clamp meter etc but I'm looking to simplify the process and get it clear readout testing individual panels ...

 

[Hedges]

There are PV panel testers:

Amazon.com

Will reviewed one, thought it was from Renogy but I don't find right now.

If you compute the resistance needed to load panel to approximately Vmp/Imp, you could connect a load (maybe several 120V space heaters in parallel) and measure voltage & current. The power curve vs. voltage is reasonably flat.