Fresno · Clovis · Madera · Sanger · Reedley & More
Solar System
Underperforming?
If your solar panels are producing less power than expected, your PG&E bill is higher than it should be, or your monitoring shows a production drop — we find the cause and fix it.
We perform a full solar performance audit: actual vs. expected output, inverter diagnostics, shading analysis, panel condition, and monitoring review. You get a written report with findings and a clear path to restoring production.
Why Solar Systems Lose Output
Most production losses are diagnosable and fixable. Here are the most common causes we find in Central Valley systems:
Dirty Panels
Agricultural dust, pollen, bird droppings, and smoke coat panels and reduce output 10–25%. Fresno's dry summers mean dust accumulates fast.
Inverter Issues
Inverters are the most common failure point. A degraded or faulted inverter can cut output significantly — often without obvious warning signs.
Shading & Clipping
New tree growth, added structures, or an oversized array can cause shading losses or inverter clipping that wasn't present at install.
Panel Degradation
Panels degrade 0.5–1% per year. A 10-year-old system may produce 5–10% less than when new — more in Fresno's sustained heat.
What a Performance Audit Includes
We measure, compare, and document every major factor affecting your system's output:
- Actual vs. expected output comparison — based on system size, age, and weather
- Inverter diagnostics — error codes, output curves, firmware check
- Panel-level production review (Enphase and SolarEdge systems)
- Shading analysis — new obstructions, seasonal shading changes
- Wiring and connector inspection — resistance, corrosion, heat damage
- Monitoring system verification — data gaps, offline devices
- Written report with findings and repair recommendations
Schedule a Performance Check
We serve Fresno, Clovis, Madera, Sanger, Reedley, Kingsburg, and all surrounding Central Valley communities. Licensed contractor #1063682.
Solar Performance — Common Questions
Why is my solar system underperforming?
The most common causes are dirty panels, inverter issues, shading from new tree growth or structures, panel degradation, faulty wiring, and monitoring system errors. A professional performance audit identifies the exact cause.
How do I know if my solar panels are producing less power?
Compare your current utility bills to the same month last year. If your PG&E bill has increased or your true-up is higher than expected, your system may be underperforming. Your monitoring app should show daily production — compare it to your system's expected output.
What is solar clipping?
Solar clipping occurs when your panels produce more power than your inverter can handle. The inverter caps output at its rated capacity, and the excess energy is lost. This is common in oversized systems or when panels are added to an existing inverter.
How much does solar degradation affect output?
Most solar panels degrade at 0.5–1% per year. A 10-year-old system may produce 5–10% less than when it was new. In Fresno's heat, degradation can be slightly faster than in cooler climates.
Can dirty solar panels really reduce output?
Yes. In the Central Valley, agricultural dust, pollen, and smoke can reduce solar output by 10–25% if panels are not cleaned regularly. Fresno's dry summers mean dust accumulates quickly.
Solar Performance Check — All Service Cities
Solar production analysis and performance audits across Fresno County and Madera County.
Fresno County