How Long Do UK Solar Panels Last?

How long do solar panels last?

UK solar panels last 25-30+ years. Key longevity facts: Panel degradation: 0.3-0.5% per year. After 25 years: 80-87% of original output. After 30 years: 75-82%. Warranty: 25 years product + 25 years performance is standard. Inverter: lasts 10-15 years (one replacement needed, £800-£1,500). Mounting system: lasts 25+ years (no replacement). No moving parts = minimal mechanical wear. The 25-year mark is the warranty expiry, NOT the end of life. Many panels continue producing useful electricity into their 30s and 40s.