Squirrels chewing wires under solar panels is one of the most common — and most expensive — problems solar homeowners face. Once animals gain access beneath a solar array, exposed wiring becomes an easy target, leading to system shutdowns, fire hazards, and costly repairs.

At Sunshine Plus Solar, we regularly help homeowners resolve and prevent solar damage caused by squirrels and other wildlife. Understanding why this happens — and how to stop it — is key to protecting your solar investment.

Why Squirrels Are Attracted to Solar Panels

Solar panels unintentionally create an ideal habitat for squirrels. The space beneath the panels offers:

• Shelter from predators and weather
• Warmth from the panels above
• Easy access from trees, fences, or rooflines

Once inside, squirrels instinctively chew to keep their teeth trimmed — and electrical wiring is often the first casualty.

How Squirrels Damage Solar Panel Wiring

Squirrels can cause damage quickly and quietly. Common issues include:

• Chewed DC wiring beneath panels
• Exposed electrical conductors
• System performance drops or full shutdowns
• Risk of electrical shorts or fire
• Inverter and monitoring errors

In many cases, homeowners don’t realize there’s a problem until their monitoring system alerts them or energy production suddenly stops.

Is Solar Wire Damage Dangerous?

Yes. Chewed or exposed wiring can lead to:

• Electrical arcing
• Fire hazards
• Complete system failure
• Voided warranties if damage is extensive

This makes prevention far more cost-effective than repair.

How to Prevent Squirrels From Chewing Solar Wires

Install a Solar Critter Guard

The most effective solution is a solar critter guard — a heavy-duty mesh barrier installed around the perimeter of the solar array.

A properly installed critter guard:

• Blocks squirrels from accessing wiring
• Prevents nesting under panels
• Protects roof surfaces
• Does not affect solar performance

Seal Entry Points Early

Installing protection before squirrels move in avoids removal costs and system downtime.

Avoid DIY Wire Covers

Temporary fixes like foam, sprays, or wire sleeves rarely work and often fail within weeks.

Can Squirrels Be Removed After Damage Occurs?

Yes, but removal is only part of the solution. If squirrels are removed without installing a critter guard, they often return — or new animals move in.

Effective prevention requires:

1. Removal of animals and nesting materials
2. Inspection and repair of damaged wiring
3. Installation of a critter guard to prevent re-entry

Sunshine Plus Solar handles the full process safely and professionally.

Will a Critter Guard Affect Solar Output?

No. When installed correctly:

• Airflow remains unobstructed
• Panel efficiency is unchanged
• Maintenance access is preserved
• The system remains discreet from ground level

Critter guards are designed to protect, not interfere.

Why Prevention Saves Thousands

Repairing squirrel-damaged solar wiring can cost far more than installing a critter guard. In severe cases, panels must be removed and reinstalled just to access damaged wiring.

Preventative protection is one of the smartest add-ons any solar homeowner can make.

Protect Your Solar System Long-Term

If you’ve seen squirrels on your roof or live near trees, your solar system is at risk without protection. Installing a critter guard early helps ensure your system operates safely, efficiently, and uninterrupted.

To protect your solar panels from squirrel damage, visit https://sunshineplussolar.com/ and speak with the Sunshine Plus Solar team.