Quick Answer
SHADING INVERTERS CAN HELP REDUCE ENERGY LOSS BY UP TO 50% WHEN SHADING AFFECTS 25% OR MORE OF A SOLAR ARRAY, AND CAN ALSO HELP TO PREVENT INVERTER FAILURE.
Understanding Shading Impact
Shading on solar panels can significantly reduce energy production. A shaded area can be as small as 0.1% of the total array area, but it can cause up to 50% energy loss. For example, if a solar array has 20 panels, 1 panel shaded can result in a 5% energy loss.
Mitigating Energy Loss with Shading Inverters
Shading inverters can be used to mitigate energy loss caused by shading. These inverters are designed to detect shading on individual panels and adjust the inverter’s output to maximize energy production. For instance, the Enphase IQ 7A can adjust the output of a 240-watt panel by 20% if it detects shading. Some shading inverters, like the SMA Sunny Island, can also detect and adjust for panel mismatch and dirt on panels.
Best Practices for Shading Inverter Installation
To get the most out of shading inverters, it’s essential to follow best practices for installation. This includes ensuring the inverter is installed in an area with good airflow to prevent overheating, using the correct cabling and connectors to prevent data loss, and calibrating the inverter for optimal performance. Additionally, regular software updates and maintenance are crucial to ensure the inverter continues to function optimally and accurately detect shading.
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