We all know solar panels are one of the best fossil fuel alternatives for businesses, homeowners, and the environment. Also, various countries support solar transformation and offer numerous rebates, Feed-in tariffs, solar loans, etc., facilities to attract solar users. After solar panel installation, the estimated energy savings compensation for the initial expense falls within 6 to 10 years. At this stage, it is essential to accept that high-end solar panels with durable build quality, if maintain consistent power production for the next 15 years, can save thousands of dollars over time.
What Is the Lifespan of Solar Panels?
Generally, the period in which solar panels generate power efficiently influences solar users’ long-term savings. The good thing is that many domestic solar panels maintain approx. 25 years’ optimal performance before showing apparent structural depreciation or lower power production. Even beyond this period, solar panels can still convert sunlight into solar power, albeit at a reduced efficiency compared to their new state. Although it’s rare for a solar panel to completely cease energy production, the gradual degradation may eventually warrant panel replacement.
Another good thing about solar panels is that other than product warranties, many manufacturers provide shorter guarantees for associated equipment. These warranties cover damages resulting from extreme weather conditions.
It is worth noting racking systems and solar mounting support stands also come with warranties, which are separate from panel documentation.
Solar inverters are also one of the cost-saving solar accessories that convert solar power into electricity and come with a 10 to 15-year lifespan. So, all in all, solar PV systems are durable with excellent lifespans.
Which Solar Panels Last Longer?
In the solar industry, solar companies manufacture three types of solar panels quality-wise – Tier 1 solar panels, Tier 2 solar panels, and Tier 3 solar panels. These standards decide panel durability and life.
Tier 1 companies have an excellent reputation in the solar market with strong financial status, produce high-end solar panels, and offer extended warranties with excellent customer support. Tier 1 solar panels maintain high output levels for more than 25 years with a low annual depreciation rate of 0.30%.
Companies that produce Tier 3 and Tier 2 solar panels also offer good quality but less than their Tier 1 counterpart. Also, their warranty claims and customer support are not that efficient with high degradation rates of 0.80% (Tier2) and 0.50% (tier 3) annually.
Solar Panels Depreciation Rate
The gradual decline in solar panels’ performance with time is known as their depreciation or degradation rate which represents yearly power output loss. Various factors accelerate this degradation like climatic extremities, mechanical stress, manufacturing material quality, and temperature fluctuations. Average solar panels undergo degradation at a 0.50% rate annually. Simply, it shows after 25 years, a solar panel’s efficiency would be approx. 87.5%.
Solar panel degradation is an obvious process, but fortunately, with improvements in solar technology, now solar companies are manufacturing more durable and efficient solar panels with lesser degradation rates.
Factors That Affect Solar Panel Lifespans
When it comes to the solar panels’ lifespan, there are some factors that can be controlled, and a few factors, like extreme weather conditions, are beyond human control. Fortunately, for factors that are under human control here are some tips for solar users to make their solar panels last longer.
Quality
As we discussed earlier, solar panels are grouped into 3 tiers, and tier 1 solar panels have exceptional quality. So, if you want your solar panels to last longer, it is Tier 1 solar panels are the best choice. To calculate the expected performance of solar panels, analyze the company’s production warranty. Manufacturers who offer 25 years of longer warranties show their commitment to their products’ high-end quality and durability, which is a positive indicator.
Installation
Though solar panels have a sturdy build quality, their installation plays a crucial role in their longevity. It is good to opt for professional solar installers to set up solar PV systems. Since well-set racking or mounting systems support solar panels and make them last longer.
Climate
Climate has a significant effect on the life and performance of solar panels. However, this factor is not in human control and can affect the solar panels’ life. As a precautionary measure, after every extreme climatic condition, solar users should check their solar panels and fix any initial damage to avoid later inconveniences. The good news is that, if timely maintained, solar panels do not get damaged by climate easily.
Final Thoughts
Degradation is a natural process like any other appliance depreciation. However, solar panels are manufactured with durable materials and if taken good care can last longer. So, whether you are a new solar consumer or using it already, opt for timely maintenance and cleaning to enjoy clean energy all year round.