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<blockquote data-quote="Bob Smith" data-source="post: 528946" data-attributes="member: 35176"><p>Thanks John,</p><p></p><p>There are effectively some constraints. It is nonetheless possible. It is similar to when you have a string of identical panels but one is faulty or has a lot of shade.</p><p>There are devices that help called Optimizer. Maybe you know them.</p><p>I have started to look at them. Actually, one type for now. Tigo optimizer. (I need to look at SolarEdge too but I have not had a chance yet, and maybe others).</p><p></p><p>Tigo Optimizer recommends the following</p><p></p><p>You can mix and match modules in the same string if the current ratio (Cr, lowest current divided by highest current) is larger than 0.75. Use this result to calculate the current mismatch (Cm): Cm = (1-Cr); it must be less than or equal to 25%.</p><p></p><p>Source</p><p>[URL unfurl="true"]https://support.tigoenergy.com/hc/en-us/articles/203419277-Mix-and-Match-Different-PV-Module-Types#:~:text=You%20can%20mix%20and%20match,than%20or%20equal%20to%2025%25[/URL]</p></blockquote><p></p>
[QUOTE="Bob Smith, post: 528946, member: 35176"] Thanks John, There are effectively some constraints. It is nonetheless possible. It is similar to when you have a string of identical panels but one is faulty or has a lot of shade. There are devices that help called Optimizer. Maybe you know them. I have started to look at them. Actually, one type for now. Tigo optimizer. (I need to look at SolarEdge too but I have not had a chance yet, and maybe others). Tigo Optimizer recommends the following You can mix and match modules in the same string if the current ratio (Cr, lowest current divided by highest current) is larger than 0.75. Use this result to calculate the current mismatch (Cm): Cm = (1-Cr); it must be less than or equal to 25%. Source [URL unfurl="true"]https://support.tigoenergy.com/hc/en-us/articles/203419277-Mix-and-Match-Different-PV-Module-Types#:~:text=You%20can%20mix%20and%20match,than%20or%20equal%20to%2025%25[/URL] [/QUOTE]
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