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Types of Solar Power Inverters

When solar panels generate electricity, they generate Direct Current (DC). Homes in the U.S. use Alternating Current (AC), so the electricity must go through an inverter to convert the current from DC to AC before it can be used in the home. There are several different types of solar power inverters to choose from, each with its own advantages and disadvantages.

String Inverters

Also known as a central inverter, a string inverter is the most common and cost-effective choice in the U.S. This tried and true method works by organizing solar panels into groups connected by “strings” that all connect to a single inverter. While this method only allows system-wide optimization, it’s reliable and perfect for full-sun areas. If your roof is partially shaded throughout the day, it may not be the best option for you.


These inverters are module-level power technology, which means there is one for each solar panel rather than one for the whole system. Microinverters, which are growing in popularity, convert the electricity from each solar panel and are often mounted on the back of the panel itself. This allows the homeowner to monitor the individual performance of each solar panel.

Inverter and Power Optimizers

Similar to microinverters, power optimizers are connected to each individual solar panel. Rather than convert the DC current to AC current, though, they “condition” the DC electricity and send it to a string inverter. In situations where the roof is shaded or partially shaded, power optimizers provide greater system efficiency than using only a string inverter.

In addition to reducing the impact of panel shading, power optimizers allow individual panel monitoring, like microinverters. They are typically less expensive than microinverters as well. Power Optimizers offer a reliable, cost-effective middle ground between string inverters and microinverters.

Choosing a Solar Inverter

Like most homeowners, you probably aren’t a solar energy expert, so why would you be expected to know exactly which kind of inverter is right for your home? It all depends on the amount of shading, if any, that your roof gets throughout the day. The technicians at Big Mountain Air are solar experts, and they can easily help you determine the best type of inverter for your solar system based on your budget and your roof’s shading.

Contact the team at Big Mountain Air today to speak to a professional service representative and begin your service request for solar panel installation

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What Our Customers Have To Say

Good Rebates

This is a review for a complete HVAC system replacement from Big Mountain. I started at the SMUD website looking for the best rebate program and found a list of contractors there. I vetted out companies that had a lower number of completed jobs per the SMUD rebate program data.

Lee S.

Very Professional

Had my A/C go out yesterday, called Big Mountain today and they had a serviceman in my area of Lincoln, he was here within a half hour and fix my unit in a very professional manner, and the cost was reasonable. I was very impressed with the company and the serviceman.

Tom D.


I had a appointment with them between 1-3 and one of their staff members called me and kept me updated when they will arrive which was nice. Steve arrived on time and was really nice for explaining what could the cause be. My ac fan was working but cool air wasn’t coming out.

Krystal L.