Common Solar Panel Problems

A noticeable drop in solar energy production is one of the most common signs that something may be affecting your solar panels. When panels are not receiving full sunlight or when system components are not functioning correctly, energy output may decrease. 

Possible causes include: 

• debris or dirt blocking sunlight 

• shading from nearby trees or buildings 

• malfunctioning inverters 

• aging or damaged solar panels 

Monitoring your solar system's production regularly can help identify performance issues early. 

Solar panels are constantly exposed to outdoor elements, which means debris can gradually accumulate on the surface. 

Common debris sources include: 

• leaves and tree sap 

• bird droppings 

• pollen buildup during seasonal changes 

• dust from nearby roads or construction 

When debris covers panel surfaces, it can reduce the amount of sunlight reaching the cells and affect system performance. 

Solar panels are secured to the roof using specialized mounting systems. Over time, weather exposure, temperature changes, and roof movement can affect these components. 

Signs homeowners should watch for include: 

• visible gaps around mounting brackets 

• panels shifting slightly during strong winds 

• rust or wear on mounting hardware 

Routine checks help ensure the solar mounting system remains secure and safe. 

Solar systems include electrical wiring that connects panels to the inverter and the home’s electrical system. Damage or wear in wiring can affect system performance. 

Potential warning signs include: 

• exposed or damaged wiring 

• animal interference with cables 

• inverter error messages 

• inconsistent energy output 

If electrical issues are suspected, homeowners should consult a qualified solar professional. 

Homeowners should take a closer look at their solar system when they notice: 

• sudden drops in energy production 

• visible debris or damage on panels 

• loose mounting components 

• electrical warnings from the inverter 

• shading caused by growing trees 

Identifying problems early can help prevent larger repairs and keep the solar system operating efficiently. 

Solar panels are mounted directly to the roofing system using brackets and flashing components. Because of this, the condition and remaining lifespan of the roof should always be considered before installing solar panels. 

Installing solar on an aging roof can lead to additional costs later if the roof needs to be replaced and the panels must be removed and reinstalled. 

To learn more, read our guide: Should You Replace Your Roof Before Installing Solar Panels?