Mixing Different Panels

[Bozant]

Can I use 100 W panels that have Vmp: 17.7V and Voc: 21.2V with 100W panels that have Vmp: 17.9V and Voc: 21.6V if I connect them to one same controller? Would this much of difference in voltage be a problem? Thanks!"

[SunEagle]

Those two panels are pretty close in spec and you should be able to use them on the same controller.

When the Vmp is more than 5% different between panels is when you can have issues.

[Bozant]

Great, thank you!