Solar panel inspection in Charleston, WV
Charleston, West Virginia
Charleston is located in West Virginia, a mixed climate zone with an average of 3.8 peak sun hours per day. Solar owners in Charleston should be aware of relatively low soiling, though periodic cleaning is still recommended. Degradation rates in Charleston are generally in line with national averages.
Climate
mixed
Sun hours
3.8 hrs/day
Soiling risk
low
State
West Virginia
Common issues in Charleston
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%
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Based on conservative solar performance modelling and published degradation data
Updated April 2026 · Structured performance modelling
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