As with appliances such as smartphones and computers, TVs and air conditioners, photovoltaic systems have a long life. However, if the life of a high-value photovoltaic system is different from appliances, some people may step into the introduction.
By continuing to maintain regularly, solar panel can be used for decades. Therefore, we will explain the life of the photovoltaic system and how it will last.
Sun panels have a lifetime
From the conclusion, it is estimated that the life of solar panels is 20 ～ 30 years. As mentioned later, solar panels are degraded by various causes and power generation is reduced.
What causes the deterioration of the solar panel?
If the solar panel has a power generation of 5 kWh, the actual power generation will drop to about 3 ～ 4 kWh. If this number is significantly below, the solar panel may be degraded. So what can we think of as the cause of the deterioration of the solar panel.
Aging
If the solar panel has a power generation of 5 kWh, the actual power generation will drop to about 3 ～ 4 kWh. If this number is significantly below, the solar panel may be degraded. So what can we think of as the cause of the deterioration of the solar panel.
For solar panels with high degradation rates, the amount of power generation is likely to decrease visibly. Also, even if the deterioration rate does not drop so much, there are cases where the power generation suddenly falls after 10 ～ 15 years.
Dirt
The surface of the exposed solar panels outdoors may accumulate bird dung, yellow sand and fallen leaves, resulting in a significant reduction in power generation. The solar panels are basically installed on slopes such as roofs, so rain can cause dirt to fall.
However, there are stains that are difficult to fall, such as the bird’s dung, and if not cleaned, the amount of power generation will remain falling.
Corruption
Damage to the solar panel is also one of the causes of lower power generation. Degradation of wiring inside the panel and breaking of surface glass can occur. Cases where large objects fly and damaged surface glass are often identified, especially in natural disasters such as typhoons.
What is the life of the battery?
The service life of using a battery every day is about 10 years. In addition, the large capacity type has a large amount of electricity accumulated, the service life is longer in proportion to the time when discharging and charging at one time, and some can be used for about 15 years depending on the type of battery.
Lithium Battery storage batteries have been used for more than 10 years and do not stop working at all if they reach a lifetime guide. Battery storage batteries are characterized by a decrease in the capacity that can be used little by little when used many times. After more than 10 years, it will not be able to charge 100% as it was when you started using it, but you can charge 70. It is a principle similar to a smartphone or computer battery.
Consider the life of parts other than Solar Battery
Even if the litter itself extends the life of more than 10 years, other parts such as the base and electronic part of the photovoltaic system may deteriorate over time. The longevity of accumulators is also said to be about 10 years, including the inability to use photovoltaic systems due to failure of other parts.