5 Solar Panel Problems Caused by Critters (And How to Fix Them)

Solar panels are a long-term investment in energy efficiency, but they can face a hidden threat – pest problems. From squirrels to birds, critters find the cozy space beneath your panels a perfect place to nest, chew, or hide. Unfortunately, these unwanted guests can compromise not only your energy output but also your entire solar system’s safety and functionality.

This blog explores the top five solar panel issues caused by pests and offers practical solutions to protect your system year-round.

How Pests Interfere with Your Solar Panel System

The gap between your roof and solar panels creates a warm, shaded haven that’s highly attractive to small animals. Squirrels, pigeons, and rodents often see this space as prime real estate for nesting. However, once inside, they can cause damage that may lead to performance losses or even dangerous electrical faults.

Here are some of the most common types of interference:

1. Chewed Wires: Rodents have a habit of gnawing through exposed wiring, which can result in short circuits, power disruptions, or even fire hazards.
2. Nesting Material Buildup: Birds often bring twigs and other debris, blocking airflow and adding weight to your panels.
3. Droppings and Contamination: Bird droppings are acidic and can degrade solar panel surfaces, reducing efficiency.
4. Panel Misalignment or Loosening: Larger animals like raccoons or squirrels can dislodge panels as they climb or nest under them.
5. Insulation Damage: Chewed insulation can increase your heating and cooling costs and reduce your home’s overall energy efficiency.

Each of these problems not only affects your system’s performance but can also void warranties or lead to expensive repairs if left unchecked.

5 Smart Solutions to Common Pest Issues

Tackling pest-related solar problems requires a proactive and layered approach. Let’s explore effective strategies for addressing each of the five most common issues:

1. Install Solar Critter Guards

The most direct and effective solution is installing solar critter guards—durable mesh barriers that line the perimeter of your panel system. These guards keep out squirrels, pigeons, and other pests without affecting panel performance. They are easy to install, long-lasting, and prevent most forms of physical intrusion. Critter guards are especially valuable in areas with high rodent or bird activity, acting as a first line of defense. Once in place, they virtually eliminate the risk of nesting and wire chewing. Their discreet appearance blends well with most rooflines, maintaining aesthetic appeal. Best of all, they require minimal maintenance once professionally installed.

2. Regular Solar Panel Service

Scheduling periodic solar panel service can help detect early signs of pest damage. Technicians can look for chewed wires, droppings, or nesting debris during inspections. Catching these problems early reduces the risk of system failure and extends your panels’ lifespan. Professional services often include thermal imaging or monitoring analysis to spot unseen electrical faults. These experts can also check for weakened mounting points or signs of corrosion due to contamination. Regular service builds a history of system health, making it easier to catch changes quickly. Maintenance plans often include seasonal check-ups for added peace of mind.

3. Use Non-Toxic Pest Deterrents

Environmentally friendly repellents such as scent-based sprays, ultrasonic devices, or decoy predators (like fake owls) can discourage birds and rodents. However, these should be used in conjunction with physical barriers for best results. Non-toxic deterrents are ideal for eco-conscious homeowners who want to avoid poisons and traps. Scent-based deterrents mimic predator smells that discourage nesting behavior. Ultrasonic devices emit frequencies that annoy pests but remain silent to humans. These deterrents are a good temporary measure while long-term solutions are being implemented.

4. Seal Roof Gaps and Access Points

Pests can sometimes enter your attic or walls via roof gaps near your panels. Seal all potential entry points around flashing, vents, or chimneys to eliminate access. This helps not only your solar setup but also protects your overall roofing system. Use weatherproof sealants or metal flashing for added durability. Check these areas after strong winds or storms as damage can reopen access points. Sealing your roof is a one-time investment that prevents a cascade of pest and moisture-related issues. It also helps maintain the structural integrity of your roof.

5. Commit to Routine Solar Panel Maintenance

Even after installing deterrents, ongoing solar panel maintenance is key. Clean away droppings and debris regularly and look out for physical damage. Routine cleaning and inspections help prevent small issues from escalating. Debris buildup can lead to overheating or hotspots on your panels. Maintenance visits also ensure your system is performing at its rated efficiency. Keeping your panels clean and critter-free safeguards your solar investment for the long haul.

By combining physical barriers with professional oversight, you can protect your solar panels from critter-related problems and ensure optimal performance year-round.

Why Pest Prevention Is Worth the Investment

It may be tempting to ignore minor pest signs—especially if your panels seem to be working fine. But pests are silent saboteurs. The damage they cause is usually hidden until it results in a power drop or system failure.

Investing in critter guards for solar panels and regular inspections not only prevents these costly surprises but also keeps your solar system running efficiently. Remember, performance losses due to pest damage are often not covered under manufacturer warranties. That means ignoring the issue today could cost you thousands tomorrow.

Moreover, pests that damage panel wiring can lead to fire hazards, posing a risk to your entire home. Preventive measures ensure peace of mind, safe operation, and maximum return on your solar investment.

With professional help, these solutions can be implemented quickly, restoring your system’s security and efficiency without unnecessary disruption.

Final Thoughts

Solar panels are designed to last decades, but they need protection, just like any other part of your home. Pests pose real, solvable threats to your energy system, and taking action now ensures your solar setup remains powerful, safe, and efficient.

Whether you’re dealing with critters now or want to avoid them altogether, schedule a professional solar panel inspection with Wash Me Solar. From solar cleaning packages and pest-proofing to full solar panel maintenance, we’re here to help you protect your investment and keep your energy flowing. Call us today for a free consultation 801-210-1387.

This blog is originally published here: https://www.washmesolar.com/5-solar-panel-problems-caused-by-critters-and-how-to-fix-them/