solar (2 facts)

• How long do solar panels last?
  Most residential solar panels last 25–30 years, with 25-year performance warranties standard.
• What does a solar panel warranty cover?
  Two warranties apply: a product warranty (10–25 years, equipment defects) and a performance warranty (typically 25 years, minimum output, often ~85–90% at year 25); installer workmanship is separate.