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Lifespan of a solar inverter

What is the lifespan of a solar inverter?

With so many manufacturers producing solar inverters these days, it’s difficult to figure out how long a solar (PV) inverter will last let alone determining which one is the best choice to use as a replacement inverter.

Depending on the type, manufacturer, or model, solar inverters’ lifespans may be shorter than that of the solar panels they operate. Solar inverters also have more electrical components than solar panels and are required to transform DC energy from solar panels into AC. These components are more vulnerable to heat than any other elements in the PV system, making them even more susceptible to equipment failure.

How long do they last?

The average string inverter lasts 10-15 years, while some microinverters and DC optimizers are rated to last 20-25 years. However, if you’re looking for an off-grid battery-based PV inverter, expect a lifespan of only 2-10 years depending on the manufacturer.

Types of inverters

Although DC optimizers and microinverters have a longer lifespan, string inverters are more commonly used when installing solar panels. However, people who live in remote locations without access to electricity would benefit from battery-based inverters as they can store energy for future use.

Inverters are an essential piece of equipment for any PV system, and we created this guide to help consumers understand the various types of inverters available. We’ll cover not only longevity but also practicality and economics so that consumers can make informed decisions about which type of inverter is best for them and get the most out of their PV system.

What affects the lifespan of a solar inverter?

Heat, humidity, and regular maintenance are only a few of the many variables that can significantly impact your inverter’s longevity as well as the solar system’s efficiency. Not to mention the manufacturer and grade of electrical components used in its construction.

A solar inverter can last just as long as a car, depending on how well it was made and how the previous owner took care of it.

You can apply the same theory to solar inverters to figure out how long each style will last. The best way to do this is by finding out the length of time covered in the manufacturer’s warranty, as it varies among manufacturers.


Below is a list of inverter types along with their typical warranties:

  • String inverter 5-10 years standard warranty and 20 extended warranty
  • Micro inverter 20-25 years standard warranty
  • DC optimizers 20-25 years standard warranty
  • Central inverters 5-10 years standard warranty and 20 years extended warranty
  • Battery based inverters 2-5 years standard warranty and 10 years extended warranty

Vendors of solar inverters usually provide warranties that range from a few years to ten years, with some extending the length of coverage. Because different vendors’ warranties vary, and some inverters manufacturers even extend coverage, it’s important to double-check. Despite the fact that manufacturers’ warranties don’t give an exact lifespan for a solar inverter, they can reveal what a manufacturer thinks is appropriate for each model.

String inverters have a lifespan of 10-15 years, and with proper maintenance, they can last up to 20 rare cases.

Battery-based inverters tend to have shorter lifespans than other types of equipment because they are constantly running and overloaded. DC Optimizers and Microinverters are newer technologies that haven’t been around long enough for anyone to be sure about their lifespan, but most people suspect they will last 20 to 25 years.

Excessive heat can do some serious damage to your PV inverter, and even cause system performance issues if it gets bad enough. Make sure that the person installing your PV system is following proper guidelines for choosing the location of your inverter.

Solar Inverter Installation tips

  1. Choose a location for installation that is well-ventilated and free from excessive moisture.
  2. Install your outdoor inverter in a shady area to avoid damage from too much direct sunlight. Some models can withstand more sun than others.
  3. If you’re installing a multi-inverter system, make sure there’s adequate clearance between each inverter so that the heat doesn’t flow from one to the next.

Finally, keep in mind that, in general, inverters do not last as long as your solar panels. As a result, it’s a good idea to budget for an inverter replacement at some point during the life of your PV system.

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