Solar Power Lifespan: How Long They Last and Maintenance Tips?

Switching to solar energy is a smart choice — it helps in reducing electricity costs and supports a sustainable future. But if you’re considering installing solar panels, you might wonder how long they last and how to maintain them.

With a lifespan of 25-30 years approximately, solar panels offer long-term energy savings and stable returns with less maintenance. Due to technological progress, they have long-lasting, economical and efficient solutions to sustainable energy needs.

Read on to learn more about how it works. 

How Long Do Solar Panels Last?

Solar panels generally last 25 to 30 years, contributing to an exceptional solar power lifespan. In fact, some panels installed back in the 1980s are still working today. While manufacturers usually offer a 25-year warranty, many panels continue to generate electricity beyond that with lower efficiency.

Thanks to advancements in technology, modern solar panels are more durable and efficient. They undergo strict testing to fight:

• Extreme temperatures (both hot and cold)
• High humidity and strong winds
• Heavy snow and ice loads
• Hail storms (tested with 1-inch ice balls at 51 mph)

With proper solar panel maintenance, the panels can provide decades of clean energy while saving you money on electricity bills.

Also Read: Loan for Solar Panel Installation

Factors that Affect Solar Power Lifespan

There can be a few things that can influence how long your solar panels stay efficient. Some of the major ones are listed below:

• Temperature: High heat can cause wear and tear over time, reducing the panel’s efficiency.
• Shadow: Shadowing on solar panels can reduce overall energy output, affecting the connected system’s performance. Even a small amount of shadow can significantly impact efficiency.
• Dirt & Waste: Dust, leaves and bird droppings block sunlight, reducing energy production. Regular solar panel maintenance helps in maintaining efficiency.

6 Simple Solar Panel Maintenance Tips

Taking care of your solar panels ensures they last longer and perform at their best. Here’s how you can keep them in top shape:

• Schedule Regular Cleaning: Wash the solar panels at least twice a year, ideally at the start of summer and winter. If you live in a dusty area, clean them every 3 months.
• Pick the Right Time: Clean the panels in the morning or when they are cool. Avoid cleaning them in direct sunlight to prevent thermal stress.
• Use Gentle Cleaning Methods: Remove dirt with a soft cloth or brush to avoid scratching the surface.
• Check for Damage: While cleaning, inspect for loose connections, cracks or broken parts. If you spot any issues, contact a professional for repairs.
• Dry Panels Properly: Let them air dry or use a soft cloth to prevent water spots that might affect efficiency.
• Keep a Maintenance Record: Track your cleaning and inspection dates is important to ensure timely solar panel maintenance.

Best Ways to Clean Solar Panels

You can follow the below best practices while cleaning the solar panels:

• Use Pure Water: Deionised or distilled water prevents mineral buildup and stains
• Choose Mild Cleaners: Avoid harsh chemicals or similar materials that could damage the surface
• Pick the Right Tools: Use a soft-bristle brush, sponge or microfiber cloth to prevent scratches

Maintaining your solar panels is not complicated but it does make a big difference. Regular cleaning and solar panel maintenance keep them running efficiently, ensuring you get the most out of your investment.

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FAQs on Solar Panel Maintenance

How often should solar panels be maintained?

You can clean the solar panels 2 to 4 times a year, depending on your location. In dusty or polluted areas, the panels should be cleaned more frequently.

What is the best time to wash solar panels?

It’s best to clean them in the early morning or evening when they are cool. Avoid cleaning under direct sunlight to prevent damage.

How can I protect my solar panels when not in use?

If you’re not using your solar panels, cover them with a protective sheet to protect them from dust, waste and UV exposure. Also, turn off the system and check for any wear and tear periodically.