In a solar power system, the inverter is one of the most important pieces of equipment. Without it, the energy your solar panels produced would be useless for running your lights and appliances. There are 2 key types of inverters on the market: string inverters and microinverters. Which one is right for your system? Keep reading for a comparison of them both so that you can make the right decision.

String Inverters

String inverters are the most common choice of inverter in solar energy systems. In this setup, solar panels are connected to one another in a “string”—hence the name. The combined DC electricity from the panels flows along the string to a single, central inverter, which converts it all into AC power for household use.

These inverters cost less upfront, which is likely the reason they are so popular among solar users. Solar power systems are already expensive upfront, so many users are looking to cut costs with that initial installation. They’ve also been used essentially since solar power was created, making them a well-established and reliable option.

However, string inverters are more likely to experience efficiency loss if a panel is dirty or shaded, as it can drag down the performance of the entire string. String inverters also offer less detailed monitoring and reporting, as it can’t break down performance issues by panel.

Microinverters

Microinverters are a more recent innovation in solar technology. Rather than connecting all panels to a single inverter, microinverters are attached to each panel individually. This means DC-to-AC conversation occurs at the panel level, rather than centrally.

These offer many advantages, but most importantly, optimizing the performance of your array. By converting power at the panel level, shading or damage to one panel doesn’t impact the performance of the others. It also offers detailed monitoring for every panel. This allows you to track each panel’s performance individually, making it easier to identify and address potential issues quickly.

Microinverters, however, will cost more than a single string inverter. They’re also more complex to install, since they’ll be up on the roof, with multiple inverter connections. That location can also make them harder to maintain over the system’s lifetime.

If you’re still trying to decide between a central Samlex solar power inverter and several microinverters, try speaking to a solar installer to get professional advice that can help you determine which option is best for you.