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.