Inverter type
String Inverters
String inverters convert DC power from an entire string of panels into AC power. They are the most common inverter type but have a single point of failure — if the inverter fails, the entire string stops producing.
Expected lifespan
12 years
Equipment type
inverter
Common issues
Inverter efficiency loss
Degradation or malfunction in the inverter reducing DC-to-AC conversion efficiency. Often indicated by error codes or unexpected shutdowns.
Typical loss: 5–25%
Natural panel degradation
All solar panels lose efficiency over time at roughly 0.5–0.8% per year. Accelerated in extreme heat or poorly manufactured panels.
Typical loss: 3–15%
Check your system
Use our free Solar Loss Checker to estimate how much energy your string inverters system may be losing.
Check my systemBased on conservative solar performance modelling and published degradation data
Updated April 2026 · Structured performance modelling
How we calculate →