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String Inverters Vs. Microinverter

What are Solar Inverters?


When the sunlight is absorbed by solar panels, they generate direct current (DC). Solar inverters then convert this into alternating current (AC). This is the type of electricity used in your homes.


In the last few decades, inverter technology has been evolving to fully maximize a homeowner’s solar system. Traditionally, string inverters were the go-to option, but in the last decade, microinverters are slowly taking over the solar system design.


Let’s take a quick look at both systems so you can decide which one fits you best.



String Inverters


Also called central inverters, they are standalone devices found near your main service panel and electric meter. Typically, there’s just one but not always on a single house. It follows a series circuit where 6-12 solar panels are stringed together.



Advantages of Solar Inverters


1. Easy to Troubleshoot – you only need one device to convert DC to AC. So if the system fails, you only need to look at one device if your solar system needs to be fixed.

2. Labor Convenience – since it’s just a single device, it’s easier to install.

3. Relatively cheaper



Disadvantages


1. In areas with rapid shutdown regulations, you might need extra wiring (extra cost!) just to adhere to these regulations

2. Partial Shading Inefficiency – since it’s a string series, if one panel’s performance lowers down because of some partial shading, all panels go down to that level. Limiting your power output.






Microinverters


Each microinverter performs the same basic function of a string inverter—convert DC to AC. But this time, each microinverter is installed on every single panel. While string inverters keep electricity production at each panel by the lowest producing panel, microinverters don’t have this problem because each microinverter works independently of one another for enhanced solar power production.


Microinverters maximize the full production of each panel.

Enphase is the pioneer of microinverters with millions of units installed in homes worldwide.


Advantages of Microinverter


1. Rapid shutdown capability – turning on and off the entire system rapidly is very important especially during emergencies. This feature can ensure the safety not just of your family, but of first respondents as well.

2. Yields more electricity – since each microinverter maximizes the power output of every single panel, compared to string inverters where the current is reduced to the level of the least producing panel

3. Lifespan – microinverters have a 25-year warranty compared to string inverters’ 8-12 year warranty.

4. Monitoring – monitor each panel’s productivity output anytime and anywhere.


These are just the tip of the iceberg on solar inverters. If you want to know more, book a free consultation with us today.




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Copyright @ Top Solar Broker 2021

All Rights Reserved