In a new report published by SolarCity, the company that wants to acquire Tesla, it has been seen that solar energy systems have a lifespan of at least 35 years, 40% more than what the market expects.
The key to the report is that the degradation of the solar panels (the annual efficiency loss) supplied to SolarCity is 35% less if you compare with other panels not created by this company, which is normally about 25 years.
SolarCity feels it is due to the implementation of a leading quality program in the industry. And it is that this company is now positioned as one of the largest manufacturers of solar panels in the world, with its tens of thousands of systems connected to a central database, the performance is known in real time.
In the study, SolarCity looked at more than 11.000 panels to determine your data and come to the conclusion that their solar panels perform above industry standards. The key focuses on your "degradation." Solar panels will lose a certain amount of electrical production capacity each year due to various effects, be it from the water vapor inside the panels, sunlight slowly breaking down materials or the increase and decrease in daily temperatures. .
In order for solar panels to offer greater productivity for those who install them, their manufacturers have improved the quality of their hardware. The solar efficiency standard in the panels for Tier 1 guarantees not to lose no more than 0,7% efficiency per year for the first 25.
The important thing is that you are motivating "cheap" products coming from major manufacturers, they are increasing in quality and longevity, following the path set by industry leaders such as SunPower, Kyocera and SolarWorld.