Best solar inverters review: SolarEdge vs. Enphase vs. SMA vs. Tigo

best solar inverters enphase vs solaredge vs sma

If you want to maximize your solar energy system’s production, finding the best solar inverter is as important as the solar panels you choose. For an “uncomplicated” roof – one that faces south and has no gables, chimneys, or other obstructions that can cast a shadow – the best solar inverter for you may be a standard string inverter. However, more than half of new residential solar installations are using module-level power electronics (MLPEs) like power optimizers and microinverters to maximize electricity production.

In the world of MLPEs, you’re probably trying to decide between two big names: SolarEdge vs. Enphase. According to Greentech Media, the two companies controlled 95 percent of the module-level power electronics market in 2015. They are also the two leading inverter brands featured in quotes to solar shoppers on the EnergySage Solar Marketplace. The question of which is the best solar inverter comes down to cost, performance, warranties, and personal preference.

SolarEdge: the industry-leading power optimizer

SolarEdge Technologies is headquartered in Israel and manufactures the leading power optimizer product available in the United States. Power optimizers are installed at the site of an individual solar panel and “condition” the direct current (DC) electricity that the panel produces, which makes it easier for the inverter to convert the electricity to useful alternating current (AC) electricity.

Unlike microinverters, SolarEdge power optimizers cannot fulfill the function of an inverter alone. Instead, they fix the voltage of the solar electricity and then send it to a centralized inverter to be converted to AC power, which increases the overall efficiency of the system. According to SolarEdge, there is little difference in efficiency between a system with microinverters and one with power optimizers and a string inverter.


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A system that uses power optimizers will cost less than one with microinverters, all other things being equal. SolarEdge power optimizers offer many of the same capabilities that Enphase and other microinverter manufacturers do. In addition to increasing system efficiency, they make it possible to monitor the performance of a solar panel system on the panel level, which isn’t possible with a system that has a single string inverter. SolarEdge also offers the advantage of manufacturing the only inverters that are compatible with the Tesla Powerwall 2.

SolarEdge power optimizers come with a 25-year warranty. However, the string inverter that the power optimizers are paired with typically has a 12 year warranty, and it will need to be replaced at some point during the lifetime of the solar PV system.

Enphase: microinverters for a top-performing solar panel system

enphase inverter logoEnphase is headquartered in California and manufactures the most popular microinverter product for sale in the United States today.

Like power optimizers, microinverters are located on the roof alongside individual solar panels. Instead of sending electricity to a centralized string inverter, systems with microinverters convert the DC solar electricity to useful AC electricity at the site of the solar panel.

Generally speaking, a solar panel system with microinverters will be slightly more efficient than one with power optimizers. However, up-front costs and maintenance costs will be higher with Enphase microinverters than with SolarEdge power optimizers due to the fact that that microinverters are a more technologically complex piece of equipment.

Like SolarEdge, Enphase’s microinverters come with a 25-year warranty, and because they don’t rely on a string inverter, there’s no need to worry about purchasing a replacement product during your solar panel system’s lifetime. While they aren’t compatible with the Tesla Powerwall, Enphase also manufactures a storage product that can be used in conjunction with its microinverters.

Tigo & SMA: other module-level power electronic options

SolarEdge and Enphase are the two of the best solar inverters on the market, but they aren’t the only MLPE options available for home solar PV systems.

SMA America is a subsidiary of SMA Solar Technology, which is headquartered in Germany and manufactures both string inverters and power optimizers. The company was founded in 1981 and is considered widely considered to be a manufacturer of high-quality inverter products. However, they’re slightly more expensive than other options, and as a result they aren’t as popular as SolarEdge’s power optimizer product in the United States.

Tigo Energy is a MLPE manufacturer based in the United States that produces power optimizers. They may not be a household name like SolarEdge, but they partner with a variety of solar panel manufacturers (among them CSUN, Jinko Solar, Silfab, and Trina Solar) to produce “smart modules,” which are essentially solar panels manufactured with power optimizers attached. These are particularly appealing for solar installers because they make it easier to install a solar energy system with MLPEs, which can also have the effect of reducing your solar installation costs.

Choosing the best solar inverter option for your home

EnergySage has additional resources that can help you make a decision about your solar inverter options: 

While you can continue to read about the different technologies, the best way to find out which option works for your needs is to review actual quotes from qualified local installers in your area.

When you register your property on the EnergySage Solar Marketplace, you can review offers that have been customized to your home and evaluate the costs and benefits of different inverter options. Customers who compare quotes on EnergySage can save 20 percent or more on their solar installation simply by evaluating all of their equipment, financing, and installer options.


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9 thoughts on “Best solar inverters review: SolarEdge vs. Enphase vs. SMA vs. Tigo

  1. John E Johnson

    Do you ever talk about SunPower? They have their own brand of microinverter that is better than Enphase.

    1. Mitchell Gostowski

      Sun Power does not offer a good value at all compared to other makers. Anybody…Canadian Solar, LG, Kyocera, etc…much the same thousands less.

  2. Ivy Computer

    Have installed a couple solar edge systems that have been in the field for a couple years. Starting to have problems, and the tech support is the worst. Put up a high priority ticket, and you can go a week and not hear anything. Don’t know much about the alternatives, but we’ll be finding out.

    1. HCA

      I have to strongly disagree with your statement as I have found the Solaredge service tech support the best from any other company i have phone for assistance.
      Their feedback and support was instant on an issue which needed some digging in to the programing of the system I have. The tech support especially Marios I spoke to daily with return call to me some time twice a day till we are both satisfied was more than I expected.

      To compare the services I also raised the same issue with the installation company which for weeks could not get any answers and gave me all the excuses to stir away from satisfying my question.

      If I have to do this over again I will definitely install solaredge.
      For the records I have also installed sunpower x21 345W panels which are performing over the rating and producing some incredible power within almosts no loses comparing with other system in the area.

  3. Nicolas

    Sun Power has a closed system of installers… it bugs me that, as a company that does electrical installation and domotics, i can not buy there panels because they have a regional installer which only does turn-key applications…

    So service is already a big bust…

  4. Hal Farthing

    SunPower would be at the bottom of our list of suppliers/installers. Not sure what kind of company they have now morphed into but several years ago we found them to be completely unreliable and overpriced. We currently have 9- 5mw or larger projects on the books and wouldn’t use them

  5. Bob

    We have SolarWorld panels, with Enphase MicroInverters, an Enphase Envoy Controller and a full battery back up system from Sunverge, all seamlessly operating & producing plenty of power for more than 6 months.

    Our vendors (Primary: Petersen Dean) have been providing followup contacts, and recently a N/C upgrade to the Sunverge Battery Back Up system.

    If the PG&E Grid goes down at any time, we’ll still be able to produce PV power to our home, and have backup power for evenings/nights, or when additional power is needed.


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