Solar Health Report
Barton Hills House
8.4 kW · Enphase · July 2026
Your system needs attention
Score trend
Trending down 2 points/monthDashed line marks a healthy score of 85.
Weather wasn’t the issue
July weather was close to typical. Your system produced 297 kWh less than physics predicts for those conditions, so the shortfall is from something else.
Hot panels cost about 166 kWh in July
Panels ran roughly 36°C hotter than their lab rating (25°C cell temperature). Hot panels produce less power — that's a ~12.6% loss, about 166 kWh worth $25. It's normal and baked into your expected output.
Unusual loss rate — worth investigating now
Your panels are producing about 2.1% per year less than expected for their age and weather. That's roughly 5.2× your warranty's allowed degradation. If this is degradation, projected impact is $4,236 in lost production over 25 years. Shading, soiling, or a hardware fault can look the same on paper.
What to do: Contact your installer. If they can't explain it, the manufacturer may cover a replacement under warranty.
Monthly Production
Your system has performed better than 38% of systems in your area over the past 3 months.
Next month, typical sunlight for your location is 118% of your yearly average, based on seasonal patterns. August is historically your system's 2nd strongest month, so expect production to decrease as days get shorter.
What this means
Last month's production was well below what your system produced in the same month last year — more than expected aging can explain.
- •New or increased shading from trees or nearby structures
- •A panel, microinverter, or component that has partially or fully failed
- •Inverter operating at reduced efficiency
What to do: Schedule an inspection with your solar installer. Bring your monitoring data — the trend over the past few months will help them diagnose the issue quickly.
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