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How Long Do Solar Panels Last?

July 9th, 2021 | By Roger Kuznia

Home solar panels on roof

When you begin to think about investing in a solar system installation, the question of how long do solar panels last is bound to come up. It’s hard to calculate the savings against the initial cost of a home solar system without knowing the solar panel lifespan and how long they will produce the energy you need.

The life expectancy of solar panels

In general, solar panels last approximately 25-30 years. But this doesn’t mean your home solar system will stop producing energy when it reaches that timeline. Your solar system will continue to work, though your panels’ power production no longer will be guaranteed by the manufacturer. So it’s important to understand degradation rates and industry projections.

What is the yearly solar panel degradation rate?

Through use, all products will lose performance, and solar energy systems are no exception. However, solar energy systems have a very low degradation rate throughout their lifespan. They will continue to produce energy as long as they are not dented or scratched from debris or other factors. Solar energy systems don’t have any moving parts, so they seldom break and are usually only damaged by outside forces such as severe weather.

Some premium solar panels have a degradation rate of about 0.3% per year, while others have a higher degradation rate of 0.8% per year. That’s an average of about 0.5% per year. This means that if you get a standard solar panel with a warranty of 30 years at 0.5% degradation, your solar panel system should still be operating at 85% of its original optimal capacity when the warranty runs out. The panels that Pink Energy uses guarantee that your panels will operate at least at 85% percent of their original capacity after 25 years.

How to extend the lifespan of solar panels


Although they look sleek, modern and delicate, most solar systems are actually super durable. They are designed and built to withstand rain, wind, high and low temperatures, humidity and even hail. There is very little maintenance needed to keep a home solar system working at capacity.

You’ll want to keep your solar energy system free from leaves, pollen, dirt, dust, falling branches and bird droppings if possible. This will enable them to generate the highest amount of electricity possible. Often, the wind and rain will take care of removing debris from your for you, but if needed, you can easily rinse your panels from the ground with plain water. Just use a hose to spray off your panels.

If you are worried about solar panels and snow, in most cases, wind or sunshine will take care of excess snow on your panels.


A battery backup allows you to store the excess energy produced by your solar system for later use during a power outage or at night.

Pink Energy partnered with to provide quality solar panel battery backups so your home should keep running whenever your panels aren’t producing.


Regular inspection of your solar energy system can reveal potential issues like loose racking, exposed wires and an aging or failing solar inverter. Make sure a professional performs the check-up because you can void your panel warranty if you end up scratching or otherwise damaging the panels on your roof.

Power your home for decades with a solar system

Now that you know how long solar energy systems last, adding solar may seem like an even better option. Contact Pink Energy and one of our solar representatives will help you determine whether your home qualifies.

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