Answer:

Ferroamp's Solar String Optimizers (SSO) optimize each solar panel string at the string level with a Maximum Power Point Tracker (MPPT) built into each SSO.

However, if one or more solar panels in the string are partially shaded, it may be a good idea to install individual panel optimizers on these panels. It will optimize the shaded panel to maximize its output power.

If a customer desires this and their installer deems it advantageous, Ferroamp recommends optimizers from the brand TIGO, specifically optimizers with a maximum output current of 12.5A. Thus, not exceeding the current capability of an SSO. Currently, only the TIGO TS4-A-O (see attached) meets these requirements.

However, it's worth noting that modern solar panels already have built-in bypass diodes, which already reduce the risk of significant losses due to shading. It's also worth considering that extra panel optimizers may:

• Result in slightly higher losses, as the panel optimizer itself consumes a certain constant power.
• Be an additional component that can fail, an additional source of failure in your solar panel installation.
• Incur additional costs.

Below are some examples of panels where it could be advantageous to use panel optimizers to avoid shading from the chimney (highlighted in green).

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