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While federal tax credits and various rebates or incentives can help reduce costs, installing solar panels can still be a significant investment. However, solar panels can eventually pay for themselves since they are built to last for several decades. When researching this renewable energy option, it’s essential to consider the typical lifespan of solar panels. Most solar panels are expected to last between 25 and 30 years, and many trusted manufacturers offer production warranties that cover 25 years or more.
The average break-even point for energy savings from solar panels is six to 10 years after installation. If the panels continue performing efficiently for another 15 years or more, you could save thousands of dollars over their lifetime.
The longer your solar panels continue to generate electricity effectively, the more savings you’ll accumulate over time. The good news is that most residential solar panels are expected to function efficiently for around 25 years before noticeable degradation, or a decline in energy output, occurs. Even after that point, solar panels can still convert sunlight into energy, though at a less efficient rate compared to when they were first installed. While it’s rare for a solar panel to stop working completely, the degradation may eventually become significant enough that replacing the panels is advisable.
In addition to production warranties for solar panels, many manufacturers offer shorter warranties on the related equipment. These warranties can cover damage caused by extreme weather, falling branches, and other unforeseen events. Racking systems which support the panels are not usually covered under the panel warranty and may sustain weather-related damage. Solar inverters typically last between 10 and 15 years. This shorter lifespan is due to the continuous work inverters do to convert the energy from the panels into usable electricity for your home. Replacing solar inverters typically costs between $1,000 and $2,000.
The quality of the product largely influences the longevity of solar panels. Solar panels are categorized into three tiers: Tier One, Tier Two, and Tier Three. Tier One manufacturers are considered top-tier based on industry standards, having produced solar panels for over five years, maintaining stable financial standing, and earning a reputation for their high-quality products and services.
Tier One solar panels not only adhere to higher standards but also tend to perform better over time, with higher energy output after 25 years compared to Tier Two or Tier Three panels. The degradation rate for Tier One panels is about 0.30% per year, whereas Tier Two panels degrade at a rate of 0.50% and Tier Three panels at 0.80% annually. While Tier One panels typically cost 10% to 30% more upfront, this additional expense is likely to be offset by their longer lifespan and better performance.
A study conducted by the National Renewable Energy Laboratory (NREL) found that the average degradation rate across all solar panels is 0.50% annually. This means that after 25 years, your solar panels could still be operating at roughly 89% of their original efficiency.
While certain factors that influence solar panel lifespan, such as climate and extreme weather, are beyond your control, there are still ways to help extend the life of your solar panels.
Quality of solar panels
As demonstrated by the difference in solar panel tiers, the quality of the panels plays a significant role in their long-term performance. A good indicator of future output is the production warranty provided by the manufacturer. Companies that offer warranties of 25 years or more show confidence in their products, which is a positive sign for consumers.
Installation
Partnering with a skilled installer ensures that your solar panels are securely mounted and properly wired, helping to preserve their longevity. Poor installation can lead to faster degradation. Many leading solar companies also provide maintenance services to check the system’s health and address potential issues before they escalate. PEP Solar offers the best installation services to its clients as it has been servicing, repairing, and installing solar since 1978.
Climate
The climate where your solar panels are installed greatly impacts their lifespan and efficiency. It’s important to understand how weather conditions affect the durability and performance of your system.
For example, high temperatures can accelerate the degradation of solar panel materials, shortening their lifespan compared to cooler environments. Other weather conditions like humidity, hail, and strong winds can also damage both the panels and the surrounding equipment.
Maintenance Cost
One of the main advantages of solar panels is their low-maintenance nature, alongside cost savings and environmental benefits. However, taking care of your panels can further prolong their lifespan. For instance, debris buildup can block sunlight and cause scratches or chips that weaken the panels over time. Regular cleaning or installing solar panel critter guards can help prevent such damage and ensure optimal performance.
When you invest in high-quality solar panels for your home, you’ll want to ensure they last as long as possible to maximize your return. Here are a few tips to help extend the lifespan of your solar panels:
Keeping your solar panels clean helps them absorb sunlight more efficiently and operate at their best. While some panels may require cleaning weekly, others can be cleaned every couple of months. The frequency of cleaning depends largely on your location and environment.
Just like any well-maintained equipment, solar panels last longer with regular upkeep. Without routine cleaning and servicing, your solar panels are more likely to deteriorate over time.
The way your solar panels are installed, the type of racking system used, and their placement on your roof can impact their degradation rate. It’s important to ensure your solar panels are installed correctly and to keep an eye on any nearby hazards, such as overhanging tree branches, that could pose a threat to their longevity.
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