Micro and string inverters

What are string inverters and microinverters?

String inverters are standalone boxes ideally suited to unshaded solar panel arrays on roofs with uniform pitch. Microinverters, on the other hand, are affixed to the back of every solar panel and maximize the output of each solar panel independent of the production of any neighboring panel, making them suitable for partially-shaded solar installations.

Are string inverters cheaper than microinverters?

Adding optimizers to a string inverter system increases its cost, but it is still typically less than using microinverters.

When are microinverters necessary?

Microinverters and optimized string inverters are typically more expensive than string inverters, but are necessary for more complex roofs. String inverters are the most commonly installed type of inverter worldwide–they're great if your roof is heavily shaded.

How do microinverters and string inverters affect a solar installation?

1. How do microinverters and string inverters impact the aesthetics of a solar installation? Microinverters are typically less visible, as they’re installed behind panels. String inverters may require more visible wiring and larger inverters, which could be a consideration for homeowners concerned about aesthetics.

Should I add a string inverter or a microinverter?

Expanding a system with a string inverter might require additional planning and potential system reconfiguration, especially if the added panels significantly alter the system’s power dynamics or layout. Choosing between microinverters and string inverters hinges on your site’s specifics and budget.

Where are microinverters installed?

Microinverters are installed underneath each solar panel on your roof. They perform the same basic function as string inverters, except for their location. Some microinverter models allow you to attach two or four panels to each unit.