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MICROINVERTERS VS STRING INVERTERS

Writer's picture: Jaime Ventura Energy ConsultantJaime Ventura Energy Consultant

Updated: Jan 25

DON'T LET SOLAR SUPPLIERS PLAY YOU A "FOOL"


A donkey is beside solar panels connected to a string inverter fully affected by shadows. Text: they see them as half "fool". Then solar panels connected to microinverters are minimally affected by shadows telling that the ones connected to the string inverter are half empty. Main text: Micro vs string inverters

Information from internationally recognized sources and honesty are the best weapons to let customers trust us.


While standard household solar inverters, known as string inverters, connect with multiple solar modules, the benefit of a microinverter is that each panel becomes electrically isolated from every other panel. This means that any fault or reduced power output caused by shadows, dust, bird droppings, or damage that may impact an individual panel has no impact on the power output of its neighboring panels.


A solar array using conventional string inverters behaves more like a society, moving as fast as the slowest panel. Microinverters celebrate individualism, and in the case of a solar array, each panel operates at the optimum, unhindered by its fellows.


According to the International Research Journal of Engineering and Technology (IRJET) and their publication in September 2021 (posted by the prestigious Research Gate website): “Performance Comparison of 3kW Residential Grid-Connected Photovoltaic System between Microinverter and String Inverter Topology using System Advisor Model”, they concluded that the simulation results supported the fact that microinverters outperform the traditional string inverters in both shaded and non-shaded conditions.


During their lab tests, the Micro Inverter system produced an annual energy of 4916 kWh in the first year with no shading and 4332 kWh in the first year with shading losses. Meanwhile, the String Inverter system generated an amount of energy of 4763 kWh with no shading and 4286 kWh with shading losses.


It does mean that string inverter suppliers see the glass as “Half Fool” (please let us use the term like a “joke” instead of “Full”) to give customers a piece of optimistic information, when in reality the glass is “Half Empty” compared with the results using microinverters.


This is one of our solutions to help customers decide about Microinverters vs String Inverters: ON GRID 1KW SOLAR KIT PACKAGED FOR RETAIL, INSTALLERS, AND BUILDERS duly designed and manufactured under our Integration Coefficient IC model. It is a perfect example of how our professional value offer is capable of generating innovative solutions.


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