Solar panel inspection in Rapid City, SD

Rapid City, South Dakota

Rapid City is located in South Dakota, a cold climate zone with an average of 4.6 peak sun hours per day. Solar owners in Rapid City should be aware of relatively low soiling, though periodic cleaning is still recommended. Degradation rates in Rapid City are generally in line with national averages.

Climate

cold

Sun hours

4.6 hrs/day

Soiling risk

low

State

South Dakota

Common issues in Rapid City

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: 525%

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: 315%

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Based on conservative solar performance modelling and published degradation data

NRELIEA-PVPSSunSpecPVsyst+ published research

Updated April 2026 · Structured performance modelling

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