Why is my photovoltaic module not as efficient as it should be?

There are multiple factors that can affect the optimal photovoltaic production of a solar kit and one of the most common and easily solved problems (on many occasions) are those derived from the photovoltaic modules , so if the solar panels do not produce the energy expected according to its technical characteristics, the house will obtain less energy, so less consumption can be fed. There are three defined factors that directly affect the photovoltaic efficiency of the panels , these factors are explained below and quick and easy solutions are offered:

Manufacturing Tolerance Mismatches The guaranteed power output range for PV modules received from a production facility can vary widely. A standard deviation of ± 3% is enough to produce ~2% power loss.

Dirt, Shading, and Leaves Dirt on the module, caused by dust, bird droppings, or snow, increases the mismatch between modules and strings. While there may not be any obstacles when designing the system, over the life of a residential system, a tree may grow or a structure may be erected that creates uneven shadows. In these cases, a solution would be to clean the solar panels and/or prune the branches or bushes that create shadows on the panel.

Uneven module aging Module performance can degrade up to 20% in 20 years; however, each module ages at a different rate, causing an aging mismatch, which increases over time. Hence, it is convenient to study in each case if it is worth investing in new solar panels.

As is well known, if a solar panel of the total number of solar panels installed in a photovoltaic solar kit experiences shadows, dirt or low efficiency, this affects the total efficiency of the installation, since this low efficiency also affects the independent efficiency of the rest of the solar panels in the installation. An excellent solution so that the low efficiency of a solar panel does not affect the rest of the panels is the installation of a SolarEdge P300 , P370 or P404 optimizer , as this device allows each panel to work at its maximum efficiency point, being independent of a solar panel due to various circumstances has a low efficiency.


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