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Can different panel wattages be used in same string?

h2ofun

Active Member
Aug 11, 2020
4,671
1,312
auburn, ca
Looking at my options for messing with my solar. I have SE 11.4K inverters with SE optimizers. I believe my panels are either 310 or 320 watts,
16 per string. So if I wanted to add another panel, does it have to be same wattage or can it be larger?
 
Looking at my options for messing with my solar. I have SE 11.4K inverters with SE optimizers. I believe my panels are either 310 or 320 watts,
16 per string. So if I wanted to add another panel, does it have to be same wattage or can it be larger?

With solar edge it doesn't matter as long as it's compatible with the optimizer and the optimizer is compatible with your inverter.