⏳ The Slow Slide: What to Expect from Your Panel's Aging Process

All solar panels naturally lose a small amount of power output each year. This is a normal, predictable part of the system's lifespan.

1. Understanding the Degradation Rate

This rate is usually a small percentage loss per year, guaranteed by the manufacturer.

• ✅ **First Year:** Panels typically see a slightly larger drop, usually around 2-3%.
• ✅ **Subsequent Years:** The rate stabilizes to an average of **0.5% to 0.7% per year** for the remaining 24 years.
• **Modern Panels:** High-quality brands now offer warranties guaranteeing no more than 0.5% annual degradation.

2. Performance Warranty Guarantee

The warranty is your protection against excessive power loss.

• **25-Year Guarantee:** The standard warranty guarantees a minimum power output after 25 years.
• **Good Quality:** Guarantees 85% to 87% of original nameplate capacity at year 25.
• **Premium Quality:** Guarantees 90% or more of original capacity at year 25.

Factors Affecting Degradation

While degradation is inevitable, it can be minimized by choosing high-quality panels with low PID (Potential Induced Degradation) and ensuring proper ventilation to keep the panels running cool. 💡