The solar inverter is the most complex and often also the most expensive part of a solar power system. This is why it is extra important to buy a high-quality inverter without glitches and that has a long lifespan. There are a lot of manufacturers selling solar inverters and it can be hard to know which ones are actually good as opposed to only looking good. An important thing to keep in mind is that new technology does not equal a better product, it is often the other way around. New features built on new technology are often not thoroughly tested and therefore have more glitches and problems.
We would advise that you try and not be tempted to buy a cheap inverter. The cheaper brands often lack in several areas, such as inefficient energy conversion and low lifespan due to low-quality components and technology. One thing to keep an eye out for is if the manufacturer provides similar products to the industry. All the companies in our list manufacture industry strength inverters with very high capacity.
We have gone through a lot of data, reviews, and articles to try and get the consensus of the internet regarding the best solar inverter brands. We think we have got a pretty accurate image of whom are top 5, but the individual placement on the list is a bit floating. For example, ABB could very well have been placed at number 3 instead of number 4, so keep that in mind when reading this article.
The criteria for the ranking of the best solar inverter brands:
Overall quality of products and components
Affordability and long term value
Warranty and service
Technology and features
Top 5 best solar inverter brands
This German manufacturer has been in the photovoltaic system industry for a long time, since 1981. SMA is considered to be the leading brand by many people in the industry and we think they are the clear choice for our list’s number one.
SMA is known for their high-quality products and their cutting-edge monitoring technology. They have won many awards for their research and products. As late as 2017 they won the Intersolar AWARD for the SMA Sunny Tripower CORE1 in the "Photovoltaics" category. Solar inverters from SMA
are also affordable and comes with a good warranty.
SolarEdge is a global leader in smart energy technology established in 2006. SolarEdge offers high quality solar inverters
with 10 year warranty and are at the front when it comes to innovations and new technology.
Similar to SMA, SolarEdge can check all criteria on our list, but lose the number one spot because of their more expensive products. One can argue the higher price is justified since SolarEdge uses a more advanced technology with power optimizers on each solar panel in the system. We still do not think that is enough to push SMA down from number one and as we stated earlier: more advanced new technology does not always equal better technology.
A passion for new technologies, intensive research, and revolutionary solutions have been shaping the Fronius brand since 1945. Fronius delivers high quality reliable inverters
, they have not come as far in technology as SMA and SolarEdge. Real-time monitoring of the solar inverters is a bit lacking in the Fronius models.
We think that Fronius is still a solid choice who offers high quality, great service and warranty up to 12 years at a very affordable price.
Asea Brown Boveri is a pioneering technology leader in power grids, industrial automation, robotics, and motion, serving customers in utilities, industry, transport, and infrastructure globally. Continuing a history of innovation spanning more than 130 years. ABB delivers outstanding products of very high quality and would be higher on this list if they focused more on homeowners instead of industry solutions.
However, ABB still have inverters that suits residential solar power systems
around 2-3kW. If you need your product serviced, however, you might to not be prioritized over their business customers.
As a key high-tech enterprise in China, Sungrow Power Supply Co., Ltd. specializes in R&D, production, sales, and service of new energy power supply devices for solar energy, wind energy, and energy storage. Main products include PV inverters, wind converters, energy storage system, new energy automotive drive system, and floaters for floating PV power plants.
Sungrow actually has the largest research and development team for solar inverters in the world. Research and development, as well as manufacturing, is located in China. They do have several international offices and offer good service and support on their products.