Why Your Solar Panels Are Underperforming (And How Performance Ratio Reveals the Truth)
# Understanding PV Performance Ratio: The Essential Metric for Solar System Success
**Performance Ratio (PR) quantifies how effectively a photovoltaic system converts available solar radiation into usable electricity compared to its theoretical maximum output.** This single percentage reveals whether your solar installation operates at peak efficiency or suffers from losses due to shading, soiling, inverter inefficiencies, temperature effects, or system design flaws. For solar professionals, PR serves as the industry-standard benchmark for system health—typically ranging from 75% to 85% for well-designed installations—making it …















