With continuing advances in technology, solar panel lifespan has improved significantly in recent years. Quality solar panels can last for decades with proper installation and upkeep.
In this guide, we’ll answer what is the lifespan of a solar panel, cover maintenance tips to ensure long-term efficiency, and highlight why it’s crucial to understand the lifespan of solar panels.
Understanding Solar Panel Lifespan
What is the Lifespan of a Solar Panel?
The average lifespan of solar panels is 25 to 30 years. The majority of Residential solar panels will come with 20 year warranties. These warranties specify that the system will operate for at least 20 years, producing a minimum of 80 percent of its rated power.
Here are some key points to remember about solar panel lifespan:
- Solar panels can last 25 to 30 years
- As solar panels degrade over time, they produce less electricity
- Solar panels may work beyond 30 years but will produce significantly less electricity than when they were new
- Solar panel warranties can help you understand how long solar panels last
Factors That Influence Solar Panel Lifespan
Even the highest quality solar panels will experience wear and tear over time. UV exposure, harsh weather conditions, and other factors degrade solar cells.
Solar panel lifespan depends on the quality of the panel, proper maintenance, climate conditions, and correct installation. Even after years of natural degradation, solar panels can still operate. However, they will produce energy less efficiently compared to when they were new.
Here are a few main factors that influence solar panel lifespan:
Quality of Materials:
Cheap construction or low-quality materials can reduce a solar panel’s lifespan and efficiency. High-quality solar panels will handle climate extremes better, have a higher resistance to damage, and hold up better over time.
Environmental Conditions:
Climate and weather affect overall solar panel lifespan, with UV exposure being one of the biggest factors. With Australia’s extreme temperatures and harsh UV rays, it is important to choose panels that are manufactured to withstand our intense climate. Learn more about how weather affects solar panels here: Solar & Weather – How Does It Affect Your Production?
Maintenance:
Proper care and professional servicing play a significant role in solar panel lifespan. Without proper solar panel maintenance, the solar cells can experience decreased efficiency or damage from dirt and debris getting caked onto the panels.
Installation:
Poor quality installation can reduce the lifespan of solar panels.
Age-Related Degradation:
Over time, natural wear and tear leads to age-related deterioration.
Do Solar Panels Have a Lifespan?
Yes, solar panels do have a lifespan and it depends on the factors mentioned above and the degradation rate. The degradation rate refers to a solar panel’s reduced ability to convert sunlight into electricity. The general rule in the solar industry is that solar panels degrade by approximately 1 percent per year.
In Australia, panels experience around a 2% degradation the first year and between 0.25% to 1% every year after.
The National Renewable Energy Laboratory (NREL) conducted an investigation to analyse the accuracy of the 1 percent degradation rate rule. The NREL research determined that improvements in solar technology and manufacturing have lowered the degradation rate below 1 percent.
NREL research found that solar panels manufactured after 2000 have a degradation rate of less than 0.4 percent.
How to Extend the Lifespan of Solar Panels
Regular Maintenance
Proper maintenance can maximise panel performance and longevity.
Although the panels require minimal maintenance, it is important to keep a regular cleaning schedule.
The more dirt and debris that builds up, the more difficult it will be to clean the panels. Unaddressed dirt can also damage the panels, leading to loose connections or compromised wiring.
Solar panels that are obstructed by branches or covered in a layer of dust won’t capture sunlight as efficiently. Regularly cleaning the panels helps maximise efficiency and long-term benefits.
Here are some important solar panel maintenance tips:
- Clean solar panels regularly according to the manufacturer’s instructions
- Regularly inspect the panels for damage
- Keep the panels free of dust, animal droppings, and debris
- Trim any overhanging branches or limbs to make sure the panels are not shaded or obstructed
- Always follow the manufacturer’s instructions to ensure you protect your panels and do not void the warranty by cleaning them improperly
- Address any issues immediately
- Be sure to check your roof’s condition on occasion as well to ensure there is no damage or leaks
- Monitor your solar system’s output
- Check your inverter every couple of years to make sure it is working properly
For a more in-depth guide to solar panel cleaning, see our article here: How To Clean Solar Panels.
Scheduling Professional Servicing
As part of solar panel maintenance, it is paramount to schedule professional servicing. We recommend scheduling professional inspections annually. These professional inspections take a deeper look at the solar panel system to make sure components are working safely and properly.
During solar panel servicing, a qualified technician will:
- Visually inspect the panels for damage
- Check all wiring and electrical connections and replace any worn out components
- Inspect all mounting structures
- Thoroughly inspect all system components
- Verify the inverter is operating correctly
- Conduct a performance analysis to check your system’s energy generation
- Detect and address any structural, electrical, or performance issues
Along with scheduling an annual professional inspection, notify a technician immediately if you notice crackers or damage, discoloured areas, electrical issues, or hotspots.
Choosing Durable Panels
Modern solar panels are incredibly efficient thanks to continually advancing technology. High-quality panels that are installed correctly can last two to three decades when maintained properly.
To ensure the longest lifespan and highest efficiency, we recommend choosing solar panels that are:
- From a reputable brand that uses superior technology
- Known for thriving in Perth’s climate
- Manufactured using modern according to the latest industry advancements (panels manufactured before 2000 will have a higher degradation rate)
- Accompanied by a strong warranty
If you are overwhelmed by researching the best solar panels, our team at Aus Energy Solar can recommend high-quality panels that meet your needs. We know the best brands and panels in the industry that perform exceptionally in our hot, dry climate.
You May Also Like: The Main Benefits of Solar Energy in Perth’s Climate
Are Solar Panels Worth the Investment?
With various government incentives and solar rebates in WA available and advances in solar panel technology, now is a great time to invest in solar panels.
The lifespan of solar panels directly affects your return on investment (ROI). The longer your solar panels last and the more efficient they are, the greater your overall savings will be.
Long-term benefits of solar panels include:
- Energy savings, leading to reduced electrical bills
- Reduced environmental impact by generating clean, renewable energy and cutting down on greenhouse gas emissions
- Return on Investment:
- Increased home value
Solar Panel Lifespan
Solar panel lifespan has improved thanks to advances in technology. By choosing high-quality panels and keeping up with proper maintenance, you can maximise your solar system’s efficiency and lifespan.
With Aus Energy Solar, you can enjoy high-quality solar panels designed for durability and peak performance. Contact our team today for expert advice and a personalised solar solution that fits your energy needs. Let’s start your journey towards a greener, more sustainable future! Visit Aus Energy Solar to learn more.
