Solar Inverters Explained: String vs. Microinverters vs. Hybrid

Solar panels get most of the attention, but the inverter is just as important. It converts the DC electricity produced by your panels into AC electricity your home can actually use, while also handling system monitoring and safety functions.

String inverters

A string inverter connects a group of panels together and converts their combined DC output in one central location. This is the traditional setup and is often the least expensive option.

The main limitation is that panels are connected in groups, so shading or reduced output on one panel can affect the performance of the string depending on the system design and the use of module-level electronics.

Microinverters

Microinverters are attached directly to individual panels. Each panel converts its own electricity to AC, which means the panels operate more independently.

This can be particularly useful on roofs with multiple orientations, partial shading, or complicated layouts. The trade-off is higher equipment cost and more electronics installed on the roof.

Hybrid inverters

Hybrid inverters are designed to work with both solar panels and battery storage. They can manage energy flowing between the panels, home, battery, and grid.

If you know you want battery storage now or may add it later, a hybrid-compatible system can simplify the overall design.

Which type should you choose?

For a simple roof with little shading and a strong focus on keeping upfront costs down, a string inverter may be perfectly adequate. Microinverters become more attractive when panel-level optimization matters. Hybrid systems make the most sense when battery storage or backup power is part of the plan.

The important thing is not to assume one technology is automatically better. Ask the installer to explain why the proposed inverter suits your roof, shading conditions, battery plans, and expected system size.