If a solar string is too short, which parameter is most likely affected adversely?

When a solar string is too short, the most impacted parameter is the voltage output. This is primarily due to the voltage characteristics of solar panels and how they are connected within a string. In a series circuit, the total voltage is the sum of the voltages of each individual panel. If the string lacks sufficient panels, the total voltage generated may not meet the requirements of the inverter or the system, which can lead to inefficiencies in energy conversion and overall system performance.

A shorter string may not only produce lower total voltage but also may struggle to reach the optimal voltage level required for efficient operation, impacting the inverter's ability to convert DC to AC effectively. This can affect how well the system functions and may also lead to issues like inverter shutdown due to low voltage conditions.

Other parameters, such as current output, can be affected as well, but the primary concern with a short string is the inability to achieve adequate voltage, which is crucial for the system's functionality. As a result, if you're assessing the most significantly impacted parameter due to a short solar string, voltage output stands out clearly.