solar inverter

Micro inverters vs String Inverters

houseJoe Mendez Jun 6, 2023

Introduction to Solar Inverters

Solar inverts are the brain of solar system and, play a crucial role in converting direct current (DC) produced by solar panels into alternating current (AC), suitable for use in homes and businesses. There are mainly two types - solar micro inverters and string inverters. But which one is better for you?

Understanding Solar Micro Inverters

Definition and Functionality

A solar micro inverter is a small device installed beneath each solar panel. It converts DC to AC directly at the panel level, optimizing the output from each individual panel.

Pros of Solar Micro Inverters

Micro inverters are known for their high efficiency. They mitigate the impact of shading or dust on one panel, ensuring consistent energy production.

Understanding String Inverters

Definition and Functionality

A string inverter, in contrast, connects an entire "string" of solar panels together, converting their combined DC output into AC.

Pros of String Inverters

String inverters are less complex to install and typically lower in cost than micro inverters.

Microinverter vs String Inverter: The Fundamental Differences

The major difference between a microinverter and a string inverter lies in their placement and functioning. Each has its own unique set of advantages that make them suitable for specific circumstances.

Comparing Efficiency: Microinverter vs String Inverter

Although both types are highly efficient, micro inverters have a slight edge due to their ability to optimize each panel's output individually.

Assessing the Installation Process

String inverters tend to have simpler and quicker installations. However, micro inverters, while requiring a more detailed installation process, offer better scalability.

Comparing Costs: Microinverter vs String Inverter

String inverters usually come with a lower upfront cost. Microinverters, on the other hand, often yield higher returns over time due to their superior efficiency.

Durability and Lifespan Comparison

Both types have long lifespans, but micro inverters generally come with longer warranties, reflecting their robust durability.

Maintenance and Troubleshooting: Microinverter vs String Inverter

Microinverters are easier to troubleshoot as the problem can be isolated to a single panel. However, they can be more challenging to access for repairs.

How to Choose Between Microinverters and String Inverters

The choice between microinverters and string inverters should be based on individual needs, budget, and the specific characteristics of the solar installation site.

Notable Market Leaders in Microinverters and String Inverters

Companies like Enphase Energy lead in the microinverter market, while SMA Solar Technology is a notable name for string inverters.

Current Trends and Future Prospects

Solar energy technology is rapidly advancing, with both microinverters and string inverters continually improving in efficiency and cost-effectiveness.

Final Thoughts: Microinverter vs String Inverter

In essence, the choice between microinverters and string inverters isn't about which is better universally, but about which is better suited to your individual needs and circumstances.


Microinverters and string inverters each have their unique benefits. Microinverters shine with their superior efficiency and scalability, while string inverters win points with their simplicity and lower initial costs. When deciding, consider your solar project's specific needs, the layout and size of your installation, and your budget.

Frequently Asked Questions (FAQs)

  1. Is a microinverter better than a string inverter?
  • It depends on your specific needs. If you have a shaded area, microinverters may perform better. But for large, unshaded areas, string inverters may be more cost-effective.
  1. How long do solar micro inverters last?
  • Quality microinverters are designed to last 20-25 years and often come with extensive warranties.
  1. Can I switch from a string inverter to a microinverter?
  • Yes, but it may involve replacing your solar panel setup and will require a professional installer.
  1. Are string inverters becoming obsolete?
  • Not at all. While microinverters are growing in popularity, string inverters remain a cost-effective solution for many solar projects.
  1. Which type of inverter is more efficient?
  • Microinverters tend to be slightly more efficient because they optimize the performance of each individual panel.

If you have any other questions about micro inverter vs string inverters you can call 949-663-3267or contact us here